SRDB-20E33H [BEL]
NON-ISOLATED DC/DC CONVERTERS; 非隔离式DC / DC转换器
| 型号： | SRDB-20E33H |
| 厂家： | 
BEL FUSE INC. |
| 描述： | NON-ISOLATED DC/DC CONVERTERS |
| 文件： | 总11页 (文件大小：350K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NON-ISOLATED DC/DC CONVERTERS
5.4 Vdc - 13.2 Vdc Input
1.0 Vdc - 5.0 Vdc Output / 20 A
SRDB-20ExxH Series
RoHS Compliant
Rev.A
•
•
•
•
Non-Isolated
•
•
•
Wide Input
OCP/SCP/OVP
Remote Sense
Low Profile Package
Remote On/Off (Active High)
Under-Voltage Lockout
(UVLO)
Description
The Bel SRDB-20ExxH is part of the non-isolated dc/dc converter Power Module series. The modules use a DIP
package for ease of layout and space savings. The output is closely regulated and the efficiency of 5 Vdc output
module is typically 94% at full load.
Part Selection
Output
Input Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Voltage
5.0 V
3.3 V
2.5 V
1.8 V
1.5 V
1.2 V
1.0 V
8.0 V - 13.2 V
5.8 V - 13.2 V
5.4 V - 13.2 V
5.4 V - 13.2 V
5.4 V - 13.2 V
5.4 V - 13.2 V
5.4 V - 13.2 V
20 A
20 A
20 A
20 A
20 A
20 A
20 A
100 W
66 W
50 W
36 W
30 W
24 W
20 W
94%
92%
91%
88%
87%
85%
84%
SRDB-20E50H
SRDB-20E33H
SRDB-20E25H
SRDB-20E18H
SRDB-20E15H
SRDB-20E12H
SRDB-20E10H
Notes: 1. Add “R” suffix at the end of the model number to indicate “Reel Packaging”, and “G” for “Tray
Packaging”.
2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part
numbers.
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Notes
Input Voltage (continuous)
-0.3 V
-
16 V
Output Enable Terminal Voltage
Ambient Temperature
-0.3 V
-40 °C
-40 °C
-
-
-
16 V
85 °C
125 °C
Storage Temperature
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
Vo=5.0 V
8 V
5.8 V
5.4 V
-
-
-
13.2 V
13.2 V
13.2 V
Vo=3.3 V
Vo=1.0-2.5 V
Input Current (full load)
VO=5.0 V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
15.1 A
14.1 A
13.3 A
10.4 A
8.4 A
VO=3.3 V
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
VO=1.0 V
6.9 A
5.9 A
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5.4 Vdc - 13.2 Vdc Input
1.0 Vdc - 5.0 Vdc Output / 20 A
Input Specifications (continued)
Parameter
Input Current (no load)
VO=5.0 V
Min
Typ
Max
Notes
-
-
-
-
-
-
-
200 mA
150 mA
135 mA
120 mA
100 mA
85 mA
-
-
-
-
-
-
-
VO=3.3 V
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
VO=1.0 V
80 mA
With simulated impedance of
500 nH, 5 Hz to 20 MHz; use two
270 uF/16 V capacitors with
Input Reflected Ripple Current (pk-pk)
-
130 mA
200 mA
Input Reflected Ripple Current (rms)
I2t Inrush Current Transient
-
-
40 mA
70 mA
ESR=0.018ohm max, at 100 kHz
0.1 A2s
0.2 A2s
Turn-on Voltage Threshold
Turn-off Voltage Threshold
4.35 V
3.65 V
4.48 V
3.98 V
4.60 V
4.30 V
Note: All specifications are typical at Vin=8 V, full load at 25 °C unless otherwise stated.
Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
VO=5.0 V
VO=3.3 V
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
VO=1.0 V
4.900 V
3.234 V
2.450 V
1.764 V
1.470 V
1.176 V
0.980 V
5.0 V
3.3 V
2.5 V
1.8 V
1.5 V
1.2 V
1.0 V
5.100 V
3.366 V
2.550 V
1.836 V
1.530 V
1.224 V
1.020 V
Test conditions:
Vin=8 V; Iout=half load
Line Regulation
±2 mV
±1 mV
±1 mV
±1 mV
±1 mV
±1 mV
±1 mV
±4 mV
±3 mV
±3 mV
±3 mV
±3 mV
±3 mV
±3 mV
VO=5.0 V
VO=3.3 V
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
VO=1.0 V
-
-
-
-
-
-
-
Load Regulation
±3 mV
±2 mV
±2 mV
±2 mV
±1 mV
±1 mV
±1 mV
±7 mV
±4 mV
±4 mV
±4 mV
±3 mV
±3 mV
±3 mV
VO=5.0 V
VO=3.3 V
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
VO=1.0 V
-
-
-
-
-
-
-
Regulation Over Temperature
(-40 °C to +85 °C)
±15 mV
±10 mV
±9 mV
±8 mV
±7 mV
±5 mV
±5 mV
±30 mV
±20 mV
±18 mV
±16 mV
±14 mV
±10 mV
±10 mV
-
-
-
-
-
-
-
VO=5.0 V
VO=3.3 V
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
VO=1.0 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5.4 Vdc - 13.2 Vdc Input
1.0 Vdc - 5.0 Vdc Output / 20 A
Output Specifications (continued)
Parameter
Output Current
Min
Typ
Max
Notes
0 A
-
20 A
Current Limit Threshold
24 A
-
40 A
Short Circuit Surge Transient
-
-
0.075 A2s
0.15 A2s
With 1 uF ceramic capacitor at the
output
Ripple and Noise 1 (rms)
Ripple and Noise 1 (rms)
Ripple and Noise 1 (pk-pk)
Ripple and Noise 1 (pk-pk)
20 mV
10 mV
60 mV
30 mV
40 mV
20 mV
100 mV
60 mV
With 680 uF tantalum capacitor at the
output
-
With 1 uF ceramic capacitor at the
output
With 680 uF tantalum capacitor at the
output
Turn on Time
-
20 mS
40 mS
3%
Overshoot at Turn on
Output Capacitance
Transient Response
-
0%
-
680 uF
8000 uF
50% ~ 100% Max Load
Settling Time
-
-
-
120 mV
50 uS
200 mV
100 uS
200 mV
100 uS
150 mV
100 uS
150 mV
100 uS
150 mV
80 uS
VO=5 V
100% ~ 50% Max Load
Settling Time
120 mV
50 uS
-
-
50% ~ 100% Max Load
100 mV
50 uS
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Settling Time
100% ~ 50% Max Load
Settling Time
VO=1.8 V-
3.3 V
100 mV
50 uS
50% ~ 100% Max Load
Settling Time
100 mV
40 uS
Test conditions:
di/dt = 0.5 A/uS; Vin=8 V; with
external 680 uF tantalum capacitor.
VO=1.5 V
VO=1.2 V
VO=1.0 V
100% ~ 50% Max Load
Settling Time
100 mV
40 uS
150 mV
80 uS
50% ~ 100% Max Load
Settling Time
100 mV
40 uS
150 mV
80 uS
100% ~ 50% Max Load
Settling Time
100 mV
50 uS
150 mV
100 uS
130 mV
80 uS
50% ~ 100% Max Load
Settling Time
90 mV
40uS
100% ~ 50% Max Load
Settling Time
90 mV
40 uS
130 mV
80 uS
Notes: All specifications are typical at full load at 25 °C u nless otherwise stated.
1. Test conditions of the output ripple and noise: two 270 uF/16 V capacitors with ESR=0.018 ohm max
at the input; Vin=8 V, Io=20 A; 0-20 MHz BW.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5.4 Vdc - 13.2 Vdc Input
1.0 Vdc - 5.0 Vdc Output / 20 A
General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency
VO=5.0 V
91%
89%
88%
85%
84%
94%
92%
91%
88%
87%
-
-
-
-
-
-
-
VO=3.3 V
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
VO=1.0 V
Measured at Vin=8 V at full load.
82%
81%
85%
84%
Switching Frequency
480 kHz
600 kHz
720 kHz
Can be reset by cycling the input supply
voltage or remote on/off.
Over Voltage Protection (Latch)
108.5%
90%VO
115%
120%
Output Trim Range
Remote Sense Compensation
-
-
110%VO
10%
Calculated Per Bell Core SR-332 (IO =
16 A, Vin=8 V, Vo=3.3 V; Ta = 25 °C)
MTBF
3,154,461 hours
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
1.22 x 0.827 x 0.345
30.99 x 21.0 x 8.76
Weight
-
11 g
-
Note: All specifications are typical at 25 °C unless otherwise stated.
Control Specifications
Parameter
Min
Typ
Max
Notes
Remote On/Off
Signal Low (Unit Off)
Signal High (Unit On)
0 V
2.5 V
-
-
1 V
13.2 V
Remote on/off pin open, unit on.
Output Trim Equations
Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal
output voltage of the converter (Vnom) are shown below. The Trim Down resistor should be connected between
the Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of
the resistors should be used for any given application.
Vout
Rtrimdown
A
Rtrim_ down = (
Rtrim_up = (
− B)K
Module
Trim
Vnom −Vadj
GND
C
− D)
Vout
Trim
Vadj−Vnom
Module
Rtrimup
Vnom
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
A
B
C
D
GND
30.955
3.961
1.834
1.927
1.353
0.099
0.102
15.805
3.407
3.397
6.916
5.851
0.446
0.684
5.884
1.266
0.861
1.533
1.533
0.196
0.401
8.450
1.825
2.320
5.000
3.935
0.201
0.183
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5.4 Vdc - 13.2 Vdc Input
1.0 Vdc - 5.0 Vdc Output / 20 A
Efficiency Data
Efficiency Curve
Efficiency Curve
100.0%
96.0%
92.0%
88.0%
84.0%
80.0%
76.0%
72.0%
100.0%
96.0%
92.0%
88.0%
84.0%
80.0%
76.0%
72.0%
68.0%
8.0 V
10.8 V
13.2 V
5.8 V
8.0 V
13.2 V
2
4
6
8
10 12 14 16 18 20
2
4
6
8
10 12 14 16 18 20
Output Current (A)
Vo=5.5 V
Efficiency Curve
Output Current (A)
Vo=3.3 V
Efficiency Curve
98.0%
94.0%
90.0%
86.0%
82.0%
78.0%
74.0%
70.0%
92.0%
88.0%
84.0%
80.0%
76.0%
72.0%
68.0%
5.4 V
5.4 V
8.0 V
8.0 V
13.2 V
13.2 V
2
4
6
8
10 12 14 16 18 20
2
4
6
8
10 12 14 16 18 20
Output Current (A)
Output Current (A)
Vo=2.5 V
Vo=1.8 V
Efficiency Curve
Efficiency Curve
94.0%
90.0%
86.0%
82.0%
78.0%
74.0%
70.0%
66.0%
92.0%
88.0%
84.0%
80.0%
76.0%
72.0%
68.0%
64.0%
5.4 V
8.0 V
13.2 V
5.4 V
8.0 V
13.2 V
2
4
6
8
10 12 14 16 18 20
2
4
6
8
10 12 14 16 18 20
Output Current (A)
Output Current (A)
Vo=1.5V
Vo=1.2 V
Efficiency Curve
92.0%
88.0%
84.0%
80.0%
76.0%
72.0%
68.0%
64.0%
60.0%
5.4 V
8.0 V
13.2 V
2
4
6
8
10 12 14 16 18 20
Output Current (A)
Vo=1.0 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5.4 Vdc - 13.2 Vdc Input
1.0 Vdc - 5.0 Vdc Output / 20 A
Thermal Derating Curves
SRDB-20E10H (Vin=8 V)
SRDB-20E12H (Vin=8 V)
SRDB-20E15H (Vin=8 V)
SRDB-20E18H (Vin=8 V)
SRDB-20E25H (Vin=8 V)
SRDB-20E33H (Vin=8 V)
SRDB-20E50H (Vin=8 V)
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5.4 Vdc - 13.2 Vdc Input
1.0 Vdc - 5.0 Vdc Output / 20 A
Ripple and Noise Waveforms
Ripple and noise at max load 5 Vdc output
Ripple and noise at max load 3.3 Vdc output
Ripple and noise at max load 2.5 Vdc output
Ripple and noise at max load 1.8 Vdc output
Ripple and noise at max load 1.5 Vdc output
.
Ripple and noise at max load 1.2 Vdc output
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5.4 Vdc - 13.2 Vdc Input
1.0 Vdc - 5.0 Vdc Output / 20 A
Ripple and Noise Waveforms (continued)
Ripple and noise at max load 1.0 Vdc output
Note: Ripple and Noise at 8 V input, with 680 uF tantalum capacitor at the output, and Ta=25 deg C.
Transient Response Waveforms
Transients 50% to 100% load 5 Vdc output
Transients 100% to 50% load 5 Vdc output
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5.4 Vdc - 13.2 Vdc Input
1.0 Vdc - 5.0 Vdc Output / 20 A
Transient Response Waveforms (continued)
Transients 50% to 100% load 3.3 Vdc output
Transients 50% to 100% load 2.5 Vdc output
Transients 50% to 100% load 1.8 Vdc output
Transients 100% to 50% load 3.3 Vdc output
Transients 100% to 50% load 2.5 Vdc output
Transients 100% to 50% load 1.8 Vdc output
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5.4 Vdc - 13.2 Vdc Input
1.0 Vdc - 5.0 Vdc Output / 20 A
Transient Response Waveforms (continued)
Transients 50% to 100% load 1.5 Vdc output
Transients 50% to 100% load 1.2 Vdc output
Transients 50% to 100% load 1.0 Vdc output
Transients 100% to 50% load 1.5 Vdc output
Transients 100% to 50% load 1.2 Vdc output
Transients 100% to 50% load 1.0 Vdc output
Note: Transient response at 8 V input, di/dt=0.5 A/uS, with external 680 uF tantalum capacitor, Ta=25 deg C.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5.4 Vdc - 13.2 Vdc Input
1.0 Vdc - 5.0 Vdc Output / 20 A
Mechanical Outline
Pin Connections
Pin
Function
1
2
Vo
Vo
3
4
5
6
Ground
Ground
Ground
Vin
7
Vin
8
9
10
11
Ground
Ground
Remote On/Off
Trim
12 Remote Sense (+)
Note: Though there are 5 GND pins (3,4,5,8,9), it is highly recommended that all of them should be used in the system
application, because of the current and the thermal conduction.
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products. These parts are not however
compatible with the higher temperatures associated with lead free solder processes and
must be soldered using a reflow profile with a peak temperature of no more than 240ºC.
©2007 Bel Fuse Inc. Specifications subject to change without notice. 031907
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
Bel Fuse Ltd.
Bel Fuse Europe Ltd.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
8F/ 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
Preston Technology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel 44-1772-556601
Fax 44-1772-888366
www.belfuse.com
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