GAQW5V020TET [GALAXY]
48V Input, 5.0VDC, 20A Output; 48V输入， 5.0VDC ， 20A输出
| 型号： | GAQW5V020TET |
| 厂家： | 
GALAXY POWER, INC. |
| 描述： | 48V Input, 5.0VDC, 20A Output |
| 文件： | 总7页 (文件大小：805K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Aquarius
48V Input, 5.0VDC, 20A Output
Eighth-brick
The Aquarius Series is the
highest power eighth-brick DC/DC
converter in the industry.
Industry Standard Pinout and Footprint
No Heat Sink Required
Very Low Common-mode Noise for a
Commercial DC/DC Converter
Two-stage Input Filter
Constant Switching Frequency
Remote Sense
Single Board Design
Very Low Parts Count
Two Year Warranty
The Aquarius Series of eighth-
brick DC/DC converters in
Galaxy's CoolConverter™ line
provides both exceptional
performance and high density.
Control Functions
Uses Patented Power Supply Control
and Architecture
Microprocessor Controlled
Primary-side Enable, Choice of Logic
Protection Features
GAQW5V020 Features:
48V Input
Over Temperature Protection
Over Voltage Protection
5.0VDC, 20A Output
Over Current Protection
Over/Under Input Voltage Protection
High Efficiency:
Typical Characteristics
Output Setpoint Accuracy: ± 1%
Load Regulation: ± 0.2%
Line Regulation: ± 0.2%
Regulation over Line, Load, and
Temperature: ± 2%
89% at 5.0V, 20A
91% at 5.0V, 10A
Low Output Ripple
Output Trim
I S O 9 0 0 1 C E R T I F I E D O R G A N I S A T I O N
®
Certified to ISO 9001:2000
Part No. 02-GAQ-01 Rev. 3.0 – 041405
WWW.GALAXYPWR.COM
GAQW5V020 – 1
Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com
General Specifications
V
IN
= 48V , T @25° C, 300 LFM Airflow, V
=5.0V , I
= Full Load unless otherwise noted.
DC
A
OUT
DC OUT
Available output power depends on ambient temperature and good thermal management. (See application graphs for limits.)
Input Characteristics
Parameter
Min
Typ
Max
75
4
Units
Operating Input Voltage
Input Current
36
48
V
DC
A
Input Capacitance
3
2
µF
Input Hysteresis, Low Line
Output Characteristics
Regulation Over Line, Load & Temperature
Voltage Ripple
V
DC
4.90
5.10
20
50
20
28
40
8
V
mV
RMS
Voltage Ripple, 20MHz BW
Current Range
mV
P–P
0
A
Current Limit Inception
20.6
A
A
1
Short Circuit Current, Peak
2
Output Transient Response, 50% to 75% load change, 1A/µsec
Settling Time to ± 1%
%V
OUT
200
35
µS
Turn-on Time to 98%Vnom
Output Overshoot at Turn-on
Trim Range
mS
0
%V
OUT
OUT
OUT
70
110
%V
%V
Overvoltage Protection, Latching
Isolation
130
Isolation Test Voltage, Input/Output (Basic)
Isolation Resistance
2250
10
V
DC
MΩ
Features
3
Overtemperature Protection, Thermal Sensor, Latching
110
° C
Switching Frequency, Fixed
250
kHz
Notes:
1. During short circuit, converter will shut down and attempt to restart once per second. The average current during this condition will be very low
and the device can be safely left in this condition continuously.
2. Limited by output energy storage. For improved performance see Tuned (T) model information.
3. PCB less than 130° C
General Specifications
Approvals and Standards
Operating Temperature
Storage Temperature
Relative Humidity
–40° C to +100° C
–55° C to +125° C
UL and c-UL Recognized Component, TUV**,
UL60950, CSA 22.2 No. 950, IEC/EN 60950
EMC Characteristics:
10% to 95% RH,
Non-condensing
Designed to meet emission and immunity
requirements per EN55022, CISPR 22, Class B,
and CISPR 24.
Vibration
2 to 9Hz, 3mm disp.,
9 to 200Hz, 1g
** An external fuse shall be used to comply with the requirements.
Material Flammability
Weight
UL V-0
27 grams
MTBF
Telcordia (Bellcore)
2.2 million hours
GAQW5V020 – 2
WWW.GALAXYPWR.COM
Part No. 02-GAQ-01 Rev. 3.0 – 041405
Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com
Application Notes
CoolConverter™
Galaxy’s proprietary CoolConverter™ provides:
• Patented single-stage power conversion architecture,
control, and magnetic design allow unprecedented power
density and efficiency in an isolated power supply.
• An advanced microcontroller reduces parts count while
adding features, performance, and flexibility in the design.
• Low common-mode noise as a result of lower capacitance
in the transformer from balanced winding design.
Protection and Control
Valid Input Voltage Range:
Overvoltage Hysteresis
The converter measures the input voltage and will
not allow operation outside of the input voltage
specification. As shown by the graphs, hysteresis is
added to both the high and low voltage to prevent
the converter from turning on and off repeatedly
when the voltage is held near either voltage extreme.
At low line this assures the maximum input current is
not exceeded; at high line this assures the semicon-
ductor devices in the converter are not damaged by
excessive voltage stress.
1.0
0
76.5 77 77.5 78 78.5 79 79.5 80 80.5
Input Voltage (V)
ON/OFF Logic Option:
The ON/OFF control logic can be either Negative
(standard) or Positive to enable the converter. For
Negative logic the ON/OFF pin is brought to below
1.0V with respect to the –INPUT pin to enable the
converter. The pull down must be able to sink
100µA. For Positive logic the ON/OFF pin is brought
to greater than 4.0V with respect to the –INPUT pin
and be limited to less than 10V. To request the
Positive logic version, add the suffix (P) to the stan-
dard part number. The ON/OFF pin has a built-in pull
up resistor of approximately 100kΩ to +5V.
Undervoltage Hysteresis
1.0
0
30
31
32
33
34
35
36
37
Input Voltage (V)
Part No. 02-GAQ-01 Rev. 3.0 – 041405
WWW.GALAXYPWR.COM
GAQW5V020 – 3
Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com
Application Notes
Output Over Voltage Protection:
Trim:
The output voltage is constantly monitored by the
microprocessor with a redundant secondary-side
measurement circuit that both shuts down the duty
cycle and triggers the microprocessor to shut down.
If the output voltage exceeds the over-voltage specifi-
cation, the microprocessor will latch the converter off.
To turn the converter on requires either cycling the
ON/OFF pin or power to the converter. This ad-
vanced feature prevents the converter from damaging
the load if there is a converter failure or application
error. If non-latching is required, consult factory.
To trim the output voltage higher, connect the
required trim resistor from the Trim pin to the
+Sense pin. To trim the output voltage lower, con-
nect the required trim resistor from the Trim pin to
the –Sense pin.
Trim-up
5.0 (100+∆%)
(100+2∆%)
RTRIM-UP
=
–
5.11kΩ
{
}
1.225∆%
∆%
Thermal Shutdown:
The printed circuit board temperature is measured
using a semiconductor sensor. If the maximum rated
temperature is exceeded, the converter is latched off.
To re-enable the converter requires cycling the ON/
OFF pin or power to the converter. If non-latching is
required, consult factory.
5.0V Trim-up
10000
1000
Control Options:
As the behavior of the circuit is determined by
firmware in the microcontroller, specific customer
requirements such as
• non-latching thermal protection
• custom valid input voltage range
100
0
2
3
4
5
6
7
8
9
10
1
Increase in Output Voltage (%)
• controlled delay from initiating an ON/OFF signal
for power sequencing
can be accomplished with no change to hardware.
The standard behavior was chosen based on system
design experience but we understand that customers
often have their own requirements.
Trim-down
100
RTRIM-DOWN
=
– 2
5.11kΩ
{∆% }
Please consult Galaxy Power for your special needs.
Remote Sense:
Trim-down
The output voltage is regulated at the point where
the sense pins connect to the power output pins.
Total sense compensation should not exceed 0.4V or
10% of Vout, whichever is greater.
1000
100
Safety:
An external input fuse must always be used to meet
these safety requirements.
External Output Trimming
10
0
2
3
4
5
6
7
8
9
10
1
Decrease in Output Voltage (%)
+Sense
Trim
Up
10KΩ
Trimpot
Trim
Trim
Down
–Sense
GAQW5V020 – 4
WWW.GALAXYPWR.COM
Part No. 02-GAQ-01 Rev. 3.0 – 041405
Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com
GAQW5V020 Operation
Power Dissipation
Efficiency
14
12
10
8
93
91
89
87
85
83
81
79
77
75
6
4
36V Vin
48V Vin
75V Vin
36V Vin
48V Vin
75V Vin
2
0
0
5
10
15
20
0
5
10
15
20
Output Current (A)
Output Current (A)
Voltage Ripple
Start Up
CH2
CH1
CH3
1) Vout 20mV/div 2µS/div
10µF ext cap 20MHz BW
1) Vout 2V 4mS/div
2) Iout 10A/div
3) Enable 5V/div
Transient Response
Line/Load Regulation
5.04
5.02
5.00
4.98
Setpoint Accuracy 0.1120%
Line Regulation 0.0180%
Load Regulation 0.0090%
Line & Load Regulation 0.0260%
36V Vin
48V Vin
75V Vin
CH1
CH2
0
5
10
15
20
1) Vout 200mV/div 200µS/div
2) Iout 10A/div
Output Current (A)
Part No. 02-GAQ-01 Rev. 3.0 – 041405
WWW.GALAXYPWR.COM
GAQW5V020 – 5
Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com
GAQW5V020 Operation
Back Bias
Thermal Derating
Crosswise Airflow
25
20
15
10
5
300 LFM
200 LFM
100 LFM
0
0
10
20
30
40
50
60
70
80
90
Ambient Temperature (°C)
1) Vout 1V/div 20mS/div
Thermal Derating
Over-current Protection
Lengthwise Airflow
Note: Over-current protection is blip-mode (aka hiccup).
25
20
15
10
5
6.0
5.0
4.0
3,0
2.0
1.0
0
36V Vin
48V Vin
75V Vin
Open Frame:
300 LFM
200 LFM
100 LFM
0
0
10
20
30
40
50
60
70
80
90
20
22
24
26
28
30
Ambient Temperature (°C)
Output Current (A)
Over Voltage Protection
1) Vout 1V/div 0.25mS/div
GAQW5V020 – 6
WWW.GALAXYPWR.COM
Part No. 02-GAQ-01 Rev. 3.0 – 041405
Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com
PACKAGE DETAIL
Pin Configuration —Bottom View
Pin
1
2
3
4
5
6
7
8
Function
+ Input
On/Off
Pin Dia. (in.)
0.040
0.040
0.040
0.060
0.040
0.040
0.040
0.060
.385
.270
REF.
.011 MIN.
– Input
– Output
– Sense
Trim
.600 PIN 4
.450 PIN 5
.300 PIN 6
.150 PIN 7
0.00 PIN 8
PIN 3 .600
PIN 2 .300
PIN 1 0.00
.90
+ Sense
+ Output
.15
.14
BOTTOM VIEW
2.000
Notes:
1. Mechanical tolerances
x.xxx in. = ± 0.005 in.
x.xx in. = ± 0.01 in.
2. Pin material: Brass with tin/lead plating over nickel
3. Workmanship: Meets or exceeds IPC-A-610B Class II
2.28
ORDERING INFORMATION
Standard Model
Number
Input
Output
Voltage
Max
**T (Tuned Model) Option
Voltage
Current
Designed for higher di/dt and ∆I applications, the
transient response has been modified to take advan-
tage of the capacitance on the customer's PCB. This
unit requires a minimum load capacitance of 5600µF
with an impedance magnitude of less than 0.005Ω at
15kHz. It offers a minimum 3X improvement in the
peak response compared to a standard unit.
GAQW5V020*
* Options:
48V
5.0V
20A
P
E
= Positive Logic Version; High = On
= 0.18" Pins (± .01")
M = 0.145" Pins (± .01")
S
T
= 0.12" Pins (± .01")
= Tuned model**
Example Part No.:
(All options shown)
GAQW5V020 PST
Part Number
Options:
Positive Logic Version
Optional Pin Lengths
E = 0.18"
M = 0.145"
S = 0.12"
Tuned Model
Galaxy Power Inc. warrants to the original purchaser that the products conform to this data
sheet and are free from material and workmanship defects for a period of two (2) years from
the date of manufacture, if this product is used within specified conditions. Galaxy Power Inc.
reserves the right to make changes to the product(s) or information contained herein without
notice. No liability is assumed as a result of their use or application. No rights under any
patent accompany the sale of any such products or information. For additional details on this
limited warranty consult the factory.
Part No. 02-GAQ-01 Rev. 3.0 – 041405
WWW.GALAXYPWR.COM
GAQW5V020 – 7
Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com
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