YS05S10-0G [BEL]
DC-DC Regulated Power Supply Module, 36W, MODULE-6;
| 型号： | YS05S10-0G |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, 36W, MODULE-6 |
| 文件： | 总20页 (文件大小：1081K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Bel Power Solutions point-of-load converters are
recommended for use with regulated bus converters in an
Intermediate Bus Architecture (IBA). The YS05S10 non-
isolated DC-DC converter delivers up to 10 A of output
current in an industry-standard surface-mount package.
Operating from a 3.0 – 5.5 V input, the YS05S10 converter
is an ideal choice for Intermediate Bus Architectures where
Point-of-Load (POL) power delivery is generally
a
requirement. It provides an extremely tightly-regulated
programmable output voltage from 0.7525 V to 3.63 V.
The YS05S10 converter provides exceptional thermal
performance, even in high temperature environments with
m
without airflow at natural convection. This performance is
accomplished through the use of advanced circuitry,
packaging, and processing techniques to achieve a design
possessing ultra-high efficiency, excellent thermal
management, and a very low-body profile.
RoHS lead-free solder and lead-solder-exempted
products are available
Delivers up to 10 A (36 W)
No derating up to 85 C
Surface-mount package
Industry-standard footprint and pinout
The low-body profile and the preclusion of heat sinks
minimize impedance to system airflow, thus enhancing
cooling for both upstream and downstream devices. The
use of 100% automation for assembly, coupled with
advanced power electronics and thermal design, results in
a product with extremely high reliability.
Small size and low profile: 1.30” x 0.53” x 0.314”
(33.02 x 13.46 x 7.98 mm)
Weight: 0.22 oz [6.12 g]
Coplanarity less than 0.003”, maximum
Synchronous Buck Converter topology
Start-up into pre-biased output
No minimum load required
Programmable output voltage via external resistor
Operating ambient temperature: -40 °C to 85 °C
Remote output sense
Remote ON/OFF (Positive or Negative)
Fixed-frequency operation
.
.
.
.
.
Intermediate Bus Architectures
Telecommunications
Data communications
Distributed Power Architectures
Servers, Workstations
Auto-reset output overcurrent protection
Auto-reset overtemperature protection
High reliability, MTBF approx. 32.54 million hours
.
.
.
.
.
.
High efficiency – no heat sink required
Reduces Total Solution Board Area
Tape and Reel Packing
Compatible with Pick & Place Equipment
Minimizes Part Numbers in Inventory
Cost Effective
calculated per Telcordia TR-332, Method I Case 1
All materials meet UL94, V-0 flammability rating
Approved to the latest edition and amendment of ITE
Safety standards, UL/CSA 60950-1 and IEC60950-1
North America
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Asia-Pacific
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Europe, Middle East
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BCD.00703_AA
© 2015 Bel Power Solutions, Inc.
YS05S10
1. ELECTRICAL SPECIFICATIONS
Conditions: TA = 25 ºC, Airflow = 300 LFM (1.5 m/s), Vin = 5 VDC, Vout = 0.7525 – 3.63 V, unless otherwise specified.
PARAMETER
NOTES
MIN
TYP
MAX
UNITS
Absolute Maximum Ratings
Input Voltage
Continuous
-0.3
-40
-55
6
VDC
°C
Operating Ambient Temperature
Storage Temperature
85
125
°C
Feature Characteristics
Switching Frequency
Output Voltage Trim Range1, 4
Remote Sense Compensation1
Turn-On Delay Time2
Full Temperature Range
By external resistor, See Trim Table 1
Percent of VOUT(NOM)
250
300
350
3.63
0.5
kHz
VDC
VDC
0.7525
Full resistive load
With Vin = (Converter Enabled, then Vin applied)
With Enable (Vin = Vin(nom) applied, then enabled)
Rise time2
From Vin = Vin(min) to Vo = 0.1* Vo(nom)
From enable to Vo = 0.1*Vo(nom)
From 0.1*Vo(nom) to 0.9*Vo(nom)
Converter Off
3
3
3.5
3.5
3.5
4.5
4.5
5
ms
ms
3
ms
-5
2.4
2.4
-5
0.8
5.5
5.5
0.8
VDC
VDC
VDC
VDC
ON/OFF Control (Positive Logic) 3
ON/OFF Control (Negative Logic) 3
Converter On
Converter Off
Converter On
Input Characteristics
Operating Input Voltage Range
Input Undervoltage Lockout
Turn-on Threshold
3.0
5.0
5.5
VDC
Guaranteed by controller
Guaranteed by controller
1.95
1.73
2.05
1.9
2.15
2.07
VDC
VDC
Turn-off Threshold
Maximum Input Current
VIN = 4.5 VDC, IOUT = 10 A
VIN = 3.0 VDC, IOUT = 10 A
VIN = 3.0 VDC, IOUT = 10 A
VIN = 3.0 VDC, IOUT = 10 A
VIN = 3.0 VDC, IOUT = 10 A
VIN = 3.0 VDC, IOUT = 10 A
VIN = 3.0 VDC, IOUT = 10 A
VIN = 3.0 VDC, IOUT = 10 A
Input Stand-by Current (Converter disabled)
Input No Load Current (Converter enabled)
VOUT = 3.3 VDC
VOUT = 2.5 VDC
VOUT = 2.0 VDC
VOUT = 1.8 VDC
VOUT = 1.5 VDC
VOUT = 1.2 VDC
VOUT = 1.0 VDC
VOUT = 0.7525 VDC
Vin = 5.0 VDC
7.9
9.1
7.3
6.7
5.7
4.7
4.0
3.2
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
mA
3.0
Vin = 5.5 VDC
VOUT = 3.3 VDC
VOUT = 2.5 VDC
VOUT = 2.0 VDC
VOUT = 1.8 VDC
VOUT = 1.5 VDC
VOUT = 1.2 VDC
VOUT = 1.0 VDC
VOUT = 0.7525 VDC
See Fig. E for setup (BW = 20 MHz)
80
80
72
68
60
55
50
42
10
mA
mA
mA
mA
mA
mA
mA
mA
Input Reflected-Ripple Current - is
mAP-P
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BCD.00703_AA
YS05S10
PARAMETER
NOTES
MIN
TYP
MAX
UNITS
Output Characteristics
Output Voltage Set Point (no load)
Output Regulation4
Over Line
-1.5
Vout
+1.5
%Vout
Full resistive load
0.1
0.1
0.5
0.5
%Vout
%Vout
Over Load
From no load to full load
Overall operating input voltage, resistive load
and temperature conditions until end of life
Output Voltage Range
-3
+3
%Vout
Output Ripple and Noise – 20 MHz bandwidth
Peak-to-Peak
Over line, load and temperature (Fig. E)
VOUT = 3.3 VDC
40
25
60
35
mVP-P
mVP-P
Peak-to-Peak
VOUT = 0.7525 VDC
External Load Capacitance
Min ESR > 1 mΩ
Plus full load (resistive)
μF
μF
1,000
5,000
10
Min ESR > 10 mΩ
Output Current Range
0
A
Output Current Limit Inception (IOUT
)
18
2
A
Short = 10 mΩ, continuous
Output Short-Circuit Current (Hiccup mode)
Arms
Dynamic Response
50% Load current change from
Co = 100 μF tant. + 1 μF ceramic
150
60
mV
µs
5 A -10 A - 5 A with di/dt = 5 A/μs5
Settling Time (VOUT < 10% peak deviation) 5
Efficiency
Full load (10 A)
VOUT = 3.3 VDC
VOUT = 2.5 VDC
VOUT = 2.0 VDC
VOUT = 1.8 VDC
VOUT = 1.5 VDC
VOUT = 1.2 VDC
VOUT = 1.0 VDC
VOUT = 0.7525 VDC
94.5
93.0
92.0
91.5
89.5
87.5
86.0
83.0
%
%
%
%
%
%
%
%
Notes:
1
The output voltage should not exceed 3.63 V (taking into account both the programming and remote sense compensation).
Note that startup time is the sum of turn-on delay time and rise time.
The converter is on if ON/OFF pin is left open.
Trim resistor connected across the GND (pin 5) and TRIM (pin 3) pins of the converter.
See waveforms for dynamic response and settling time for different output voltages.
2
3
4
5
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BCD.00703_AA
YS05S10
2. OPERATIONS
2.1. INPUT AND OUTPUT IMPEDANCE
The YS05S10 converter should be connected via a low impedance to the DC power source. In many applications, the
inductance associated with the distribution from the power source to the input of the converter can affect the stability
of the converter. The use of decoupling capacitors is recommended in order to ensure stability of the converter and
reduce input ripple voltage. Internally, the converter has 44 μF (low ESR ceramics) of input capacitance.
In a typical application, low - ESR tantalum or POS capacitors will be sufficient to provide adequate ripple voltage
filtering at the input of the converter. However, very low ESR ceramic capacitors 100 - 200 μF are recommended at the
input of the converter in order to minimize the input ripple voltage. They should be placed as close as possible to the
input pins of the converter.
The YS05S10 has been designed for stable operation with or without external capacitance. Low ESR ceramic
capacitors placed as close as possible to the load (minimum 100 μF) are recommended for improved transient
performance and lower output voltage ripple.
It is important to keep low resistance and low inductance PCB traces for connecting load to the output pins of the
converter in order to maintain good load regulation.
2.2. ON/OFF (PIN 1)
The ON/OFF pin is used to turn the power converter on or off remotely via a system signal. There are two remote
control options available, positive logic (standard option) and negative logic, with ON/OFF signal referenced to GND.
The typical connections are shown in Fig. A.
Y-Series
Converter
Vin
SENSE
Vout
R*
(Top View)
ON/OFF
Vin
Rload
GND
TRIM
CONTROL
INPUT
R* is for negative logic option only
Fig. A: Circuit configuration for ON/OFF function.
To turn the converter on the ON/OFF pin should be at a logic low or left open, and to turn the converter off the ON/OFF
pin should be at a logic high or connected to Vin. See the Electrical Specifications for logic high/low definitions.
The positive logic version turns the converter on when the ON/OFF pin is at a logic high or left open, and turns the
converter off when at a logic low or shorted to GND.
The negative logic version turns the converter on when the ON/OFF pin is at logic low or left open, and turns the
converter off when the ON/OFF pin is at a logic high or connected to Vin.
The ON/OFF pin is internally pulled up to Vin for positive logic version, and pulled down for a negative logic version. A
TTL or CMOS logic gate, open- collector (open-drain) transistor can be used to drive ON/OFF pin. This device must be
capable of:
–
–
sinking up to 1.2 mA at a low level voltage of 0.8 V
sourcing up to 0.25 mA at a high logic level of 2.3 V - 5.5 V.
When using open-collector (open-drain) transistor with a negative logic option, add a pull-up resistor (R*) to Vin as
shown in Fig. A:
–
–
–
20 K, if the minimum Vin is 4.5 V
10 K, if the minimum Vin is 3.0 V
5 K, if the undervoltage shutdown at 2.05 - 2.15 V is required.
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BCD.00703_AA
YS05S10
2.3. REMOTE SENSE (PIN 2)
The remote sense feature of the converter compensates for voltage drops occurring only between Vout pin (Pin 4) of
the converter and the load. The SENSE (Pin 2) pin should be connected at the load or at the point where regulation is
required (see Fig. B). There is no sense feature on the output GND return pin, where the solid ground plane should
provide a low voltage drop.
Y-Series
Converter
SENSE
Vout
Vin
Rw
(Top View)
ON/OFF
Vin
Rload
TRIM
GND
Rw
Fig. B: Remote sense circuit configuration.
If remote sensing is not required, the SENSE pin must be connected to the Vout pin (Pin 4) to ensure the converter will
regulate at the specified output voltage. If these connections are not made, the converter will deliver an output voltage
that is slightly higher than the specified value.
Because the sense lead carries minimal current, large trace on the end-user board are not required. However, sense
trace should be located close to a ground plane to minimize system noise and ensure optimum performance.
When utilizing the remote sense feature, care must be taken not to exceed the maximum allowable output power
capability of the converter, which is equal to the product of the nominal output voltage and the allowable output current
for the given conditions.
When using remote sense, the output voltage at the converter can be increased up to 0.5 V above the nominal rating
in order to maintain the required voltage across the load. Therefore, the designer must, if necessary, decrease the
maximum current (originally obtained from the derating curves) by the same percentage to ensure the converter’s actual
output power remains at or below the maximum allowable output power.
2.4. OUTPUT VOLTAGE PROGRAMMING (PIN 3)
The output voltage can be programmed from 0.7525 V to 3.63 V by connecting an external resistor between TRIM pin
(Pin 3) and GND pin (Pin 5); see Fig. C. Note that when a trim resistor is not connected, the output voltage of the
converter is 0.7525 V.
Y-Series
Converter
SENSE
Vout
Vin
(Top View)
ON/OFF
Vin
Rload
TRIM
GND
RTRIM
Fig. C: Configuration for programming output voltage.
A trim resistor, RTRIM, for a desired output voltage can be calculated using the following equation:
21.07
RTRIM
5.11
[kΩ]
(VO-REQ - 0.7525)
where,
RTRIM Required value of trim resistor [kΩ]
VOREQ Desired (trimmed) output voltage [V]
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BCD.00703_AA
YS05S10
Note that the tolerance of a trim resistor directly affects the output voltage tolerance. It is recommended to use standard
1% or 0.5% resistors; for tighter tolerance, two resistors in parallel are recommended rather than one standard value
from Table 1.
Ground pin of the trim resistor should be connected directly to the converter GND pin (Pin 5) with no voltage drop in
between. Table 1 provides the trim resistor values for popular output voltages.
The Closest Standard
RTRIM [kΩ]
V0-REG [V]
Value [kΩ]
0.7525
1.0
open
80.0
41.97
23.1
15
80.6
42.2
23.2
15
1.2
1.5
1.8
2.0
11.78
6.95
3.16
2.21
11.8
6.98
3.16
2.21
2.5
3.3
3.63
Table 1: Trim Resistor Value
The output voltage can also be programmed by external voltage source. To make trimming less sensitive, a series
external resistor Rext is recommended between TRIM pin and programming voltage source. Control Voltage can be
calculated by the formula:
(5.11 REXT)(VO-REQ - 0.7525)
VCTRL 0.7
[V]
30.1
where,
VCTRL Control voltage [V]
REXT External resistor between TRIM pin and voltage source; the value can be chosen depending on the required
output voltage range [kΩ].
Control voltages with REXT 0 and REXT 15 K are shown in Table 2.
V0-REG [V]
0.7525
1.0
VCTRL (REXT = 0)
0.700
VCTRL(REXT = 15 K)
0.700
0.658
0.535
1.2
0.624
0.401
1.5
0.573
0.201
1.8
0.522
-0.000
2.0
0.488
-0.133
2.5
0.403
-0.468
3.3
0.268
-1.002
3.63
0.257
-1.044
Table 2: Control Voltage [VDC]
3. PROTECTION FEATURES
3.1. INPUT UNDERVOLTAGE LOCKOUT
Input undervoltage lockout is standard with this converter. The converter will shut down when the input voltage drops
below a pre-determined voltage; it will start automatically when Vin returns to a specified range.
The input voltage must be typically 2.05 V for the converter to turn on. Once the converter has been turned on, it will
shut off when the input voltage drops below typically 1.9 V.
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BCD.00703_AA
YS05S10
3.2. OUTPUT OVERCURRENT PROTECTION (OCP)
The converter is protected against overcurrent and short circuit conditions. Upon sensing an overcurrent condition, the
converter will enter hiccup mode. Once over-load or short circuit condition is removed, Vout will return to nominal value.
3.3. OVERTEMPERATURE PROTECTION (OTP)
The converter will shut down under an overtemperature condition to protect itself from overheating caused by operation
outside the thermal derating curves, or operation in abnormal conditions such as system fan failure. After the converter
has cooled to a safe operating temperature, it will automatically restart.
3.4. SAFETY REQUIREMENTS
The converter meets North American and International safety regulatory requirements per UL60950 and EN60950. The
maximum DC voltage between any two pins is Vin under all operating conditions. Therefore, the unit has ELV (extra low
voltage) output; it meets SELV requirements under the condition that all input voltages are ELV.
The converter is not internally fused. To comply with safety agencies’ requirements, a recognized fuse with a maximum
rating of 20 Amps must be used in series with the input line.
4. CHARACTERIZATION
4.1. GENERAL INFORMATION
The converter has been characterized for many operational aspects, to include thermal derating (maximum load current
as a function of ambient temperature and airflow) for vertical and horizontal mountings, efficiency, startup and shutdown
parameters, output ripple and noise, transient response to load step-change, overload, and short circuit.
The figures are numbered as Fig. x.y, where x indicates the different output voltages, and y associates with specific
plots (y = 1 for the vertical thermal derating, …). For example, Fig. x.1 will refer to the vertical thermal derating for all
the output voltages in general.
The following pages contain specific plots or waveforms associated with the converter. Additional comments for
specific data are provided below.
4.2. TEST CONDITIONS
All data presented were taken with the converter soldered to a test board, specifically a 0.060” thick printed wiring
board (PWB) with four layers. The top and bottom layers were not metalized. The two inner layers, comprised of two-
ounce copper, were used to provide traces for connectivity to the converter.
The lack of metalization on the outer layers as well as the limited thermal connection ensured that heat transfer from
the converter to the PWB was minimized. This provides a worst-case but consistent scenario for thermal derating
purposes.
All measurements requiring airflow were made in the vertical and horizontal wind tunnels using Infrared (IR)
thermography and thermocouples for thermometry.
Ensuring components on the converter do not exceed their ratings is important to maintaining high reliability. If one
anticipates operating the converter at or close to the maximum loads specified in the derating curves, it is prudent to
check actual operating temperatures in the application. Thermographic imaging is preferable; if this capability is not
available, then thermocouples may be used. . The use of AWG #40 gauge thermocouple is recommended to ensure
measurement accuracy. Careful routing of the thermocouple leads will further minimize measurement error. Refer to
Fig. D for the optimum measuring thermocouple location.
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BCD.00703_AA
YS05S10
Fig. D: Location of the thermocouple for thermal testing.
4.3. THERMAL DERATING
Load current vs. ambient temperature and airflow rates are given in Figs. x.1 and Figs. x.2 for maximum temperature
of 120°C. Ambient temperature was varied between 25 °C and 85 °C, with airflow rates from 30 to 500 LFM (0.15 m/s
to 2.5 m/s), and vertical and horizontal mountings. The airflow during the testing is parallel to the short axis of the
converter, going from pin 1 and pin 6 to pins 2–5.
For each set of conditions, the maximum load current is defined as the lowest of:
(i)
The output current at which any MOSFET temperature does not exceed a maximum specified temperature
(120°C) as indicated by the thermographic image, or
(ii)
The maximum current rating of the converter (10 A).
During normal operation, derating curves with maximum FET temperature less than or equal to
120 °C should not be exceeded. Temperature on the PCB at the thermocouple location shown in Fig. D should not
exceed 120 °C in order to operate inside the derating curves.
4.4. EFFICIENCY
Fig. x.3 shows the efficiency vs. load current plot for ambient temperature of 25 ºC, airflow rate of 200 LFM (1 m/s) and
input voltages of 4.5V, 5.0V and 5.5V. Fig. x.4 is for input voltages of 3.0 V, 3.3V and 3.6 V and output voltages ≤ 2.5 V.
4.5. POWER DISSIPATION
Fig. 3.3V.4 shows the power dissipation vs. load current plot for Ta = 25 ºC, airflow rate of 200 LFM (1 m/s) with vertical
mounting and input voltages of 4.5 V, 5.0 V and 5.5 V for 3.3 V output.
4.6. RIPPLE AND NOISE
The output voltage ripple waveform is measured at full rated load current. Note that all output voltage waveforms are
measured across a 1 μF ceramic capacitor.
The output voltage ripple and input reflected-ripple current waveforms are obtained using the test setup, see Fig. E.
iS
1 H
source
inductance
Y-Series
CO
CIN
1F
ceramic
capacitor
100F
ceramic
capacitor
Vout
DC-DC
Converter
4x47F
ceramic
capacitor
Vsource
Fig. E: Test setup for measuring input reflected-ripple currents, is and output voltage ripple.
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BCD.00703_AA
YS05S10
12
10
8
12
10
8
6
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
4
2
2
0
0
20
30
40
50
60
70
80
90
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Ambient Temperature [°C]
Fig. 3.3V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 3.3 V converter mounted
vertically with Vin = 5 V, and maximum MOSFET temperature
120 C.
Fig. 3.3V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 3.3 V converter mounted
horizontally with Vin = 5 V, and maximum MOSFET
temperature 120 C.
1.00
0.95
0.90
0.85
2.5
2.0
1.5
1.0
5.5 V
5.0 V
4.5 V
5.5 V
5.0 V
4.5 V
0.80
0.75
0.5
0.0
0
2
4
6
8
10
12
0
2
4
6
8
10
12
Load Current [Adc]
Load Current [Adc]
Fig. 3.3V.3: Efficiency vs. load current and input voltage for
Vout = 3.3 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 3.3V.4: Power Loss vs. load current and input voltage for
Vout = 3.3 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 3.3V.5: Turn-on transient for Vout = 3.3 V with the
application of Enable signal at full rated load current
(resistive) and 100 μF external capacitance at Vin = 5 V. Top
trace: Enable signal (2 V/div.); Bottom trace: output voltage
(1 V/div.); Time scale: 2 ms/div.
Fig. 3.3V.6: Output voltage ripple (20 mV/div.) at full rated
load current into a resistive load with external capacitance
100 μF ceramic + 1 μF ceramic and Vin = 5 V for Vout = 3.3V.
Time scale: 2 μs/div.
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YS05S10
Fig. 3.3V.7: Output voltage for Vout = 3.3 V to positive load
Fig. 3.3V.8: Output voltage response for Vout = 3.3 V to
negative load current step change from 10 A to 5 A with slew
rate of -5 A/μs at Vin = 5 V. Top trace: output voltage (100
mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF
ceramic + 1 μF ceramic. Time scale: 20 μs/div.
current step change from 5 A to 10 A with slew rate of 5 A/μs
at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom
trace: load current (5 A/div.). Co = 100 μF ceramic + 1 μF
ceramic. Time scale: 20 μs/div.
12
10
8
12
10
8
6
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
4
2
0
4
2
0
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
20
30
40
50
60
70
80
90
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Ambient Temperature [°C]
Fig. 2.5V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 2.5 V converter mounted
vertically with Vin = 5 V, and maximum MOSFET temperature
120 C.
Fig. 2.5V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 2.5 V converter mounted
horizontally with Vin = 5 V, and maximum MOSFET
temperature 120 C.
1.00
0.95
0.90
0.85
1.00
0.95
0.90
0.85
5.5 V
5.0 V
4.5 V
3.6 V
3.3 V
3.0 V
0.80
0.75
0.80
0.75
0
2
4
6
8
10
12
0
2
4
6
8
10
12
Load Current [Adc]
Load Current [Adc]
Fig. 2.5V.3: Efficiency vs. load current and input voltage for
Vout = 2.5 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 2.5V.4: Efficiency vs. load current and input voltage for
Vout = 2.5 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
+1 866 513 2839
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© 2015 Bel Power Solutions, Inc.
BCD.00703_AA
YS05S10
Fig. 2.5V.5: Turn-on transient for Vout = 2.5 V with the
Fig. 2.5V.6: Output voltage ripple (20 mV/div.) at full rated
load current into a resistive load with external capacitance
100 μF ceramic + 1 μF ceramic and Vin = 5 V for
Vout = 2.5 V. Time scale: 2 μs/div.
application of Enable signal at full rated load current
(resistive) and 100 μF external capacitance at Vin = 5 V. Top
trace: Enable signal (2 V/div.); Bottom trace: output voltage
(1 V/div.); Time scale: 2 ms/div.
Fig. 2.5V.7: Output voltage response for Vout = 2.5 V to
positive load current step change from 5 A to 10 A with slew
rate of 5 A/μs at Vin = 5 V. Top trace: output voltage (100
mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF
ceramic + 1 μF ceramic. Time scale: 20 μs/div.
Fig. 2.5V.8: Output voltage response for Vout = 2.5 V to
negative load current step change from 10 A to 5 A with slew
rate of -5 A/μs at Vin = 5 V. Top trace: output voltage (100
mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF
ceramic + 1 μF ceramic. Time scale: 20 μs/div.
12
10
8
12
10
8
6
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
4
2
0
4
2
0
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
20
30
40
50
60
70
80
90
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Ambient Temperature [°C]
Fig. 2.0V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 2.0 V converter mounted
vertically with Vin = 5 V, and maximum MOSFET temperature
120 C.
Fig. 2.0V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 2.0 V converter mounted
horizontally with Vin = 5 V, and maximum MOSFET
temperature 120 C.
+1 866 513 2839
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© 2015 Bel Power Solutions, Inc.
BCD.00703_AA
YS05S10
1.00
0.95
0.90
0.85
0.80
0.75
1.00
0.95
0.90
0.85
0.80
3.6 V
3.3 V
3.0 V
5.5 V
5.0 V
4.5 V
0.75
0
0
2
4
6
8
10
12
2
4
6
8
10
12
Load Current [Adc]
Load Current [Adc]
Fig. 2.0V.4: Efficiency vs. load current and input voltage for
Vout = 2.0 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 2.0V.3: Efficiency vs. load current and input voltage for
Vout = 2.0 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 2.0V.5: Turn-on transient for Vout = 2.0 V with the
application of Enable signal at full rated load current
(resistive) and 100 μF external capacitance at Vin = 5 V. Top
trace: Enable signal (2 V/div.); Bottom trace: output voltage
(500 mV/div.); Time scale: 2 ms/div.
Fig. 2.0V.6: Output voltage ripple (20 mV/div.) at full rated
load current into a resistive load with external capacitance
100 μF ceramic + 1 μF ceramic and Vin = 5 V for Vout = 2.0V.
Time scale: 2 μs/div.
Fig. 2.0V.7: Output voltage response for Vout = 2.0 V to
positive load current step change from 5 A to 10 A with slew
rate of 5 A/μs at Vin = 5 V. Top trace: output voltage (100
mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF
ceramic + 1 μF ceramic. Time scale: 20 μs/div.
Fig. 2.0V.8: Output voltage response for Vout = 2.0 V to
negative load current step change from 10 A to 5 A with slew
rate of -5 A/μs at Vin = 5 V. Top trace: output voltage (100
mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF
ceramic + 1 μF ceramic. Time scale: 20 μs/div.
+1 866 513 2839
tech.support@psbel.com
© 2015 Bel Power Solutions, Inc.
BCD.00703_AA
YS05S10
12
10
8
12
10
8
6
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
4
2
2
0
0
20
30
40
50
60
70
80
90
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Ambient Temperature [°C]
Fig. 1.8V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 1.8 V converter mounted
vertically with Vin = 5 V, and maximum MOSFET temperature
Fig. 1.8V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 1.8 V converter mounted
horizontally with Vin = 5 V, and maximum MOSFET
temperature 120 C.
120 C.
1.00
0.95
0.90
0.85
1.00
0.95
0.90
0.85
5.5 V
5.0 V
4.5 V
3.6 V
3.3 V
3.0 V
0.80
0.75
0.80
0.75
0
2
4
6
8
10
12
0
2
4
6
8
10
12
Load Current [Adc]
Load Current [Adc]
Fig. 1.8V.3: Efficiency vs. load current and input voltage for
Vout = 1.8 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 1.8V.4: Efficiency vs. load current and input voltage for
Vout = 1.8 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 1.8V.5: Turn-on transient for Vout = 1.8 V with the
application of Enable signal at full rated load current
(resistive) and 100 μF external capacitance at Vin = 5 V. Top
trace: Enable signal (2 V/div.); Bottom trace: output voltage
(500 mV/div.); Time scale: 2 ms/div.
Fig. 1.8V.6: Output voltage ripple (20 mV/div.) at full rated
load current into a resistive load with external capacitance
100 μF ceramic + 1 μF ceramic and Vin = 5 V for
Vout = 1.8 V. Time scale: 2 μs/div.
+1 866 513 2839
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© 2015 Bel Power Solutions, Inc.
BCD.00703_AA
YS05S10
Fig. 1.8V.7: Output voltage response for Vout = 1.8 V to
Fig. 1.8V.8: Output voltage response for Vout = 1.8 V to
negative load current step change from 10 A to 5 A with slew
rate of -5 A/μs at Vin = 5 V. Top trace: output voltage (100
mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF
ceramic + 1 μF ceramic. Time scale: 20 μs/div.
positive load current step change from 5 A to 10 A with slew
rate of 5 A/μs at Vin = 5 V. Top trace: output voltage (100
mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF
ceramic + 1 μF ceramic. Time scale: 20 μs/div.
12
10
8
12
10
8
6
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
4
2
0
4
2
0
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
20
30
40
50
60
70
80
90
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Ambient Temperature [°C]
Fig. 1.5V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 1.5 V converter mounted
vertically with Vin = 5 V, and maximum MOSFET temperature
Fig. 1.5V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 1.5 V converter mounted
horizontally with Vin = 5 V, and maximum MOSFET
temperature 120 C.
120 C.
0.95
0.90
0.95
0.90
0.85
0.85
5.5 V
3.6 V
0.80
0.75
0.80
0.75
5.0 V
4.5 V
3.3 V
3.0 V
0
2
4
6
8
10
12
0
2
4
6
8
10
12
Load Current [Adc]
Load Current [Adc]
Fig. 1.5V.3: Efficiency vs. load current and input voltage for
Vout = 1.5 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 1.5V.4: Efficiency vs. load current and input voltage for
Vout = 1.5 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
+1 866 513 2839
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© 2015 Bel Power Solutions, Inc.
BCD.00703_AA
YS05S10
Fig. 1.5V.5: Turn-on transient for Vout = 1.5 V with the
Fig. 1.5V.6: Output voltage ripple (20 mV/div.) at full rated
load current into a resistive load with external capacitance
100 μF ceramic + 1 μF ceramic and Vin = 5 V for Vout = 1.5
V. Time scale: 2 μs/div.
application of Enable signal at full rated load current
(resistive) and 100 μF external capacitance at Vin = 5 V. Top
trace: Enable signal (2 V/div.); Bottom trace: output voltage
(500 mV/div.); Time scale: 2 ms/div.
Fig. 1.5V.7: Output voltage response for Vout = 1.5 V to
positive load current step change from 5 A to 10 A with slew
rate of 5 A/μs at Vin = 5V. Top trace: output voltage (100
mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF
ceramic + 1 μF ceramic. Time scale: 20 μs/div.
Fig. 1.5V.8: Output voltage response for Vout = 1.5 V to
negative load current step change from 10 A to 5 A with slew
rate of -5 A/μs at Vin = 5 V. Top trace: output voltage (100
mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF
ceramic + 1 μF ceramic. Time scale: 20 μs/div.
12
10
8
12
10
8
6
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
4
2
0
4
2
0
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
20
30
40
50
60
70
80
90
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Ambient Temperature [°C]
Fig. 1.2V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 1.2 V converter mounted
vertically with Vin = 5 V, and maximum MOSFET temperature
120 C.
Fig. 1.2V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 1.2 V converter mounted
horizontally with Vin = 5 V, and maximum MOSFET
temperature 120 C.
+1 866 513 2839
tech.support@psbel.com
© 2015 Bel Power Solutions, Inc.
BCD.00703_AA
YS05S10
0.95
0.90
0.85
0.80
0.75
0.95
0.90
0.85
0.80
0.75
0.70
5.5 V
5.0 V
4.5 V
3.6 V
3.3 V
3.0 V
0.70
0
2
4
6
8
10
12
0
2
4
6
8
10
12
Load Current [Adc]
Load Current [Adc]
Fig. 1.2V.3: Efficiency vs. load current and input voltage for
Vout = 1.2 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 1.2V.4: Efficiency vs. load current and input voltage for
Vout = 1.2 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 1.2V.5: Turn-on transient for Vout = 1.2 V with the
application of Enable signal at full rated load current
(resistive) and 100 μF external capacitance at Vin = 5 V. Top
trace: Enable signal (2 V/div.); Bottom trace: output voltage
(500 mV/div.); Time scale: 2 ms/div.
Fig. 1.2V.6: Output voltage ripple (20 mV/div.) at full rated
load current into a resistive load with external capacitance
100 μF ceramic + 1 μF ceramic and Vin = 5 V for Vout = 1.2
V. Time scale: 2 μs/div.
Fig. 1.2V.7: Output voltage response for Vout = 1.2 V to
positive load current step change from 5 A to 10 A with slew
rate of 5 A/μs at Vin = 5 V. Top trace: output voltage (100
mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF
ceramic + 1 μF ceramic. Time scale: 20 μs/div.
Fig. 1.2V.8: Output voltage response for Vout = 1.2 V to
negative load current step change from 10 A to 5 A with slew
rate of -5 A/μs at Vin = 5 V. Top trace: output voltage (100
mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF
ceramic + 1 μF ceramic. Time scale: 20 μs/div.
+1 866 513 2839
tech.support@psbel.com
© 2015 Bel Power Solutions, Inc.
BCD.00703_AA
YS05S10
12
10
8
12
10
8
6
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
4
2
2
0
0
20
30
40
50
60
70
80
90
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Ambient Temperature [°C]
Fig. 1.0V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 1.0 V converter mounted
vertically with Vin = 5 V, and maximum MOSFET temperature
120 C.
Fig. 1.0V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 1.0 V converter mounted
horizontally with Vin = 5 V, and maximum MOSFET
temperature 120 C.
0.95
0.90
0.85
0.80
0.95
0.90
0.85
0.80
5.5 V
5.0 V
4.5 V
3.6 V
3.3 V
3.0 V
0.75
0.70
0.75
0.70
0
2
4
6
8
10
12
0
2
4
6
8
10
12
Load Current [Adc]
Load Current [Adc]
Fig. 1.0V.3: Efficiency vs. load current and input voltage for
Vout = 1.0 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 1.0V.4: Efficiency vs. load current and input voltage for
Vout = 1.0 V converter mounted vertically with air flowing at
a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 1.0V.5: Turn-on transient for Vout = 1.0 V with the
application of Enable signal at full rated load current
(resistive) and 100 μF external capacitance at Vin = 5 V. Top
trace: Enable signal (2 V/div.); Bottom trace: output voltage
(500 mV/div.); Time scale: 2 ms/div.
Fig. 1.0V.6: Output voltage ripple (20 mV/div.) at full rated
load current into a resistive load with external capacitance
100 μF ceramic + 1 μF ceramic and Vin = 5 V for Vout = 1.0
V. Time scale: 2 μs/div.
+1 866 513 2839
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© 2015 Bel Power Solutions, Inc.
BCD.00703_AA
YS05S10
Fig. 1.0V.7: Output voltage response Vout = 1.0 V to positive
Fig. 1.0V.8: Output voltage response for Vout = 1.0 V to
negative load current step change from 10 A to 5 A with slew
rate of -5 A/μs at Vin = 5 V. Top trace: output voltage (100
mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF
ceramic + 1 μF ceramic. Time scale: 20 μs/div.
load current step change from 5 A to 10 A with slew rate of 5
A/μs at Vin = 5 V. Top trace: output voltage (100 mV/div.);
Bottom trace: load current (5 A/div.). Co = 100 μF ceramic +
1 μF ceramic. Time scale: 20 μs/div.
12
10
8
12
10
8
6
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
4
2
0
4
2
0
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
20
30
40
50
60
70
80
90
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Ambient Temperature [°C]
Fig. 0.7525V.1: Available load current vs. ambient
Fig. 0.7525V.2: Available load current vs. ambient
temperature and airflow rates for Vout = 0.7525 V converter
mounted vertically with Vin = 5 V, and maximum MOSFET
temperature 120 C.
temperature and airflow rates for Vout = 0.7525 V converter
mounted horizontally with Vin = 5 V, and maximum MOSFET
temperature 120 C.
0.90
0.90
0.85
0.85
0.80
0.80
5.5 V
3.6 V
0.75
0.70
0.75
0.70
5.0 V
4.5 V
3.3 V
3.0 V
0
2
4
6
8
10
12
0
2
4
6
8
10
12
Load Current [Adc]
Load Current [Adc]
Fig. 0.7525V.3: Efficiency vs. load current and input voltage
for Vout = 0.7525 V converter mounted vertically with air
flowing at a rate of 200 LFM (1 m/s) and Ta = 25 C.
Fig. 0.7525V.4: Efficiency vs. load current and input voltage
for Vout = 0.7525 V converter mounted vertically with air
flowing at a rate of 200 LFM (1 m/s) and Ta = 25 C.
+1 866 513 2839
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© 2015 Bel Power Solutions, Inc.
BCD.00703_AA
YS05S10
Fig. 0.7525V.5: Turn-on transient for Vout = 0.7525 V with
Fig. 0.7525V.6: Output voltage ripple (20 mV/div.) at full rated
load current into a resistive load with external capacitance
100 μF ceramic + 1 μF ceramic and Vin = 5 V for Vout =
0.7525 V. Time scale: 2 μs/div.
the application of Enable signal at full rated load current
(resistive) and 100 μF external capacitance at Vin = 5 V. Top
trace: Enable signal (2 V/div.); Bottom trace: output voltage
(200 mV/div.); Time scale: 2 ms/div.
Fig. 0.7525V.7: Output voltage response for Vout = 0.7525 V
to positive load current step change from 5 A to 10 A with
slew rate of 5 A/μs at Vin = 5 V. Top trace: output voltage
(100 mV/div.); Bottom trace: load current (5 A/div.). Co = 100
μF ceramic + 1 μF ceramic. Time scale: 20 μs/div.
Fig. 0.7525V.8: Output voltage response for Vout = 0.7525 V
to negative load current step change from 10 A to 8 A with
slew rate of -5 A/μs at Vin = 5 V. Top trace: output voltage
(100 mV/div.); Bottom trace: load current (5 A/div.). Co = 100
μF ceramic + 1 μF ceramic. Time scale: 20 μs/div.
+1 866 513 2839
tech.support@psbel.com
© 2015 Bel Power Solutions, Inc.
BCD.00703_AA
YS05S10
5. PHYSICAL INFORMATION
PAD/PIN CONNECTIONS
Pad/Pin #
Function
ON/OFF
SENSE
TRIM
1
2
3
4
5
6
Vout
GND
Vin
2
3
4
5
YS05S Platform Notes
1(*)
6
All dimensions are in inches [mm]
Connector Material: Copper
TOP VIEW
(*) PIN # 1 ROTATED 90°
Connector Finish: Gold over Nickel
Converter Weight: 0.22 oz [6.12 g]
Converter Height: 0.327” Max., 0.301” Min.
Recommended Surface-mount Pads:
Min. 0.080” X 0.112” [2.03 x 2.84]
SIDE VIEW
YS05S Pinout (Surface-Mount)
6. ORDERING INFORMATION
PRODUC
T SERIES
INPUT
VOLTAGE
MOUNTING
SCHEME
RATED LOAD
CURRENT
ENABLE LOGIC
0
ENVIRONMENTAL
YS
05
S
10
–
0 Standard
(Positive Logic)
No Suffix RoHS
lead-solder-exempt
compliant
10 A
Y-Series
3.0 – 5.5 V
S Surface-Mount
(0.7525 V to 3.63 V)
D Opposite of
Standard
(Negative Logic)
G RoHS compliant
for all six substances
The example above describes P/N YS05S10-0: 3.0 – 5.5 V input, surface mount, 10 A at 0.7525 V to 3.63 V output, standard enable
logic, and Eutectic Tin/Lead solder. Please consult factory for the complete list of available options.
NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for use as critical components in life support
systems, equipment used in hazardous environments, or nuclear control systems.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change
depending on the date manufactured. Specifications are subject to change without notice.
+1 866 513 2839
tech.support@psbel.com
© 2015 Bel Power Solutions, Inc.
BCD.00703_AA
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