SRAH-03A500 [BEL]
NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.5V - 5.0V Output / 3A; 非隔离式DC / DC转换器， 12V输入/ 1.5V - 5.0V输出/ 3A
| 型号： | SRAH-03A500 |
| 厂家： | 
BEL FUSE INC. |
| 描述： | NON-ISOLATED DC/DC CONVERTERS 12V Input / 1.5V - 5.0V Output / 3A |
| 文件： | 总15页 (文件大小：173K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.5V – 5.0V Output / 3A
POWER PRODUCTS
BP05xRAH-03A
SRAH-03A / VRAH-03A Series
RoHS Compliant
•
•
•
•
•
•
•
•
•
Nonisolated
Compact, low profile surface mount package
Fixed frequency
High efficiency means less power dissipation
Excellent thermal performance
Optimized for cost
Remote on/off
Undervoltage lockout (UVLO)
Over current and short circuit protection
Description
The Bel SRAH-03A and VRAH-03A modules are a series of non-isolated, step down DC/DC power converters that operate
from a nominal 12V source. These converters are available in a range of output voltages from 1.5V to 5.0V. They are pack-
aged in a compact, overmolded package rated at 3A. Optional lead forming provides a vertical mount product for minimal
footprint or a surface mount option for a very low profile. Standard features include remote on/off, over current and short circuit
protection, and output voltage adjust. These products may be used almost anywhere low voltage silicon is employed and a
12V source is available. Typical applications include file servers, routers, line cards and other computing and communications
equipment.
Applications
•
•
•
•
Distributed power architectures
Data networking equipment
Telecommunications
Computers and peripherals
Part Number Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Part Number
Surface Mount
Part Number
Vertical Mount
5.0V
3.3V
2.5V
1.8V
1.5V
12V
12V
12V
12V
12V
3A
3A
3A
3A
3A
15W
9.9W
7.5W
5.4W
4.5W
91%
90%
88%
85%
84%
SRAH-03A500
SRAH-03A330
SRAH-03A250
SRAH-03A180
SRAH-03A150
VRAH-03A500
VRAH-03A330
VRAH-03A250
VRAH-03A180
VRAH-03A150
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 1
NON-ISOLATED DC/DC CONVERTERS
POWER PRODUCTS
12V Input / 1.5V – 5.0V Output / 3A
BP05xRAH-03A
Absolute Maximum Ratings
Parameter
Symbol
Min
-0.3
-0.3
-40
Typical
Max
13.2
13.2
85
Unit
V
Continuous Input Voltage
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Vin
Vouten
Tamb
Tstor
V
°C
°C
-40
125
Note: Use beyond the maximum ratings may cause a reliability degradation of the DC/DC
converter or may permanently damage the device.
Input Specifications
Parameter
Module
Symbol
Min
Typical
Max
Units
Operating Input Voltage
Input Current
All
Vin
Iin
10.8
13.2
V
A
5.0V
3.3V
2.5V
1.8V
1.5V
1.7
1.2
0.9
0.75
0.6
No Load Input Current
mA
mA
All
100
10
Remote Off Input Current
3
30
Input Reflected Ripple Current1
mArms
All
All
All
All
All
Input Reflected Ripple Current (P-P)1
I2t Inrush Current Transient
Turn On Voltage Threshold
Turn Off Voltage Threshold
140
0.005
9.4
mApk
A2s
V
0.01
10.0
8.0
9.0
V
Note: Input capacitance 270µF/16V, ESR = 0.03 Ω max at 100kHz @ 25° C.
1. With simulated source impedance of 500nH, 5Hz to 20MHz.
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 2
NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.5V – 5.0V Output / 3A
POWER PRODUCTS
BP05xRAH-03A
Output Specifications
Parameter
Module
Symbol
Min
Typical
Max
Units
Output Voltage Set Point 1
Vout
V
5.0V
3.3V
2.5V
1.8V
1.5V
4.920
3.247
2.460
1.771
1.476
5.0
3.3
2.5
1.8
1.5
5.080
3.353
2.540
1.829
1.524
Load Regulation
mV
mV
mV
mV
5.0V
3.3V
2.5V
1.8V
1.5V
10
10
5
5
5
16.5
16.5
10
10
10
Line Regulation
5.0V
3.3V
2.5V
1.8V
1.5V
10
5
3
3
3
16
10
5
5
5
Regulation Over Temperature
Total Output Voltage Regulation
5.0V
3.3V
2.5V
1.8V
1.5V
20
12
8
5
5
30
25
20
10
10
5.0V
3.3V
2.5V
1.8V
1.5V
40
27
16
13
13
62.5
51.5
35
25
25
Output Ripple and Noise 2
Output Ripple and Noise 2
Output Current Range
Output DC Current Limit
Short Circuit Surge
mVp-p
mVrms
A
All
All
All
All
All
All
All
All
40
10
100
20
Iout
Ioutlim
Ioutsurge
Ton
0
3
3.6
7.5
0.7
20
A
0.35
12
0
A2s
ms
Turn on Time
Overshoot at Turn On 3
Output Capacitance
3
%
Cout
0
1200
µF
Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated.
1. Vin = 12V, Iout = full load, Ta = 25° C.
2. 0 - 20 MHz, 0.1µF ceramic cap on output.
3. Overshoot at turn on output capacitance is 100µF.
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 3
NON-ISOLATED DC/DC CONVERTERS
POWER PRODUCTS
12V Input / 1.5V – 5.0V Output / 3A
BP05xRAH-03A
Output Specifications
Parameter
Module
Symbol
Min
Typical
Max
Units
Transient Response 4
∆V 50% to 100% of Max Load
Settling Time
100
40
200
80
mV
µs
Ts
Ts
5.0V
∆V 100% to 50% of Max Load
Settling Time
100
40
200
80
mV
µs
Transient Response 4
∆V 50% to 100% of Max Load
Settling Time
80
40
80
40
150
80
mV
µs
Ts
Ts
3.3V
2.5V
1.8V
1.5V
∆V 100% to 50% of Max Load
Settling Time
150
80
mV
µs
Transient Response 4
∆V 50% to 100% of Max Load
Settling Time
70
40
70
40
100
80
mV
µs
Ts
Ts
∆V 100% to 50% of Max Load
Settling Time
100
80
mV
µs
Transient Response 4
∆V 50% to 100% of Max Load
Settling Time
70
40
70
40
100
80
mV
µs
Ts
Ts
∆V 100% to 50% of Max Load
Settling Time
100
80
mV
µs
Transient Response 4
∆V 50% to 100% of Max Load
Settling Time
70
40
70
40
100
80
mV
µs
Ts
Ts
∆V 100% to 50% of Max Load
Settling Time
100
80
mV
µs
Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated.
4. di/dt = 0.5A/1µS, Ta = 25° C without external load capacitance.
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 4
NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.5V – 5.0V Output / 3A
POWER PRODUCTS
BP05xRAH-03A
General Specifications
Parameter
Module
Symbol
Min
Typical
Max
Units
Efficiency1
%
η
5.0V
3.3V
2.5V
1.8V
1.5V
89
88
86
83
82
91
90
88
85
84
Switching Frequency
Fsw
kHz
5.0V
3.3V
2.5V
1.8V
1.5V
470
340
270
270
270
500
370
300
300
300
530
400
330
330
330
Output Voltage Trim Range2
Weight
All
All
90
110
%
g
4.9
1. Vin=12V, full load and Ta=25° C.
2. See graphs on pages 11 - 13.
Control Specifications
Parameter
Module
Symbol
Vouten
Min
Typical
Max
Units
Remote On/Off 3
All
V
Signal Low (Unit Off)
Signal High (Unit On)
All
All
-0.3
2.8
1
V
V
13.2
3. With remote on/off pin 1 open, the module is on.
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 5
NON-ISOLATED DC/DC CONVERTERS
POWER PRODUCTS
12V Input / 1.5V – 5.0V Output / 3A
BP05xRAH-03A
Efficiency Data
Module 3.3V
Module 5.0V
100%
100%
90%
80%
70%
60%
90%
80%
10.8V
12.0V
13.2V
10.8V
12.0V
13.2V
70%
60%
50%
0.30
0.75
1.50
2.25
3.00
0.30
0.75
1.50
2.25
3.00
Output Current
Output Current
Module 2.5V
100%
90%
80%
70%
60%
50%
10.8V
12.0V
13.2V
0.30
0.75
1.50
2.25
3.00
Output Current
Module 1.5V
Module 1.8V
100%
90%
80%
70%
60%
50%
40%
100%
90%
80%
70%
60%
50%
40%
10.8V
10.8V
12.0V
13.2V
12.0V
13.2V
1
2
3
4
5
0.30
0.75
1.50
2.25
3.00
Output Current
Output Current
Note: On/off pin designed to work with an open collector/drain switch.
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 6
NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.5V – 5.0V Output / 3A
POWER PRODUCTS
BP05xRAH-03A
Ripple and Noise
0.1µF ceramic cap added at the output.
Ripple and noise at full load and 12Vdc input,
3.3Vdc output and Ta=25° C
Ripple and noise at full load and 12Vdc input,
5.0Vdc output and Ta=25° C
Ripple and noise at full load and 12Vdc input,
2.5Vdc output and Ta=25° C
Ripple and noise at full load and 12Vdc input,
1.8Vdc output and Ta=25° C
Ripple and noise at full load and 12Vdc input,
1.5Vdc output and Ta=25° C
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 7
NON-ISOLATED DC/DC CONVERTERS
POWER PRODUCTS
12V Input / 1.5V – 5.0V Output / 3A
BP05xRAH-03A
Transient Response
Transient response: di/dt = 0.5A/µS, no external load capacitance
Vout=5.0V
Vout=5.0V
50% to 100% load transients at 12V input and Ta=25° C
100% to 50% load transients at 12V input and Ta=25° C
Vout=3.3V
Vout=3.3V
50% to 100% load transients at 12V input and Ta=25° C
100% to 50% load transients at 12V input and Ta=25° C
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 8
NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.5V – 5.0V Output / 3A
POWER PRODUCTS
BP05xRAH-03A
Transient Response
Transient response: di/dt = 0.5A/µS, no external load capacitance
Vout=2.5V
Vout=2.5V
50% to 100% load transients at 12V input and Ta=25° C
100% to 50% load transients at 12V input and Ta=25° C
Vout=1.8V
Vout=1.8V
50% to 100% load transients at 12V input and Ta=25° C
100% to 50% load transients at 12V input and Ta=25° C
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 9
NON-ISOLATED DC/DC CONVERTERS
POWER PRODUCTS
12V Input / 1.5V – 5.0V Output / 3A
BP05xRAH-03A
Transient Response
Transient response: di/dt = 0.5A/µS, no external load capacitance
Vout=1.5V
Vout=1.5V
50% to 100% load transients at 12V input and Ta=25° C
100% to 50% load transients at 12V input and Ta=25° C
Thermal Considerations
xRAH-03A150
xRAH-03A180
xRAH-03A250
xRAH-03A330
xRAH-03A500
100LFM
200LFM
Derating Curve
Derating Curve
3
200LFM
3
2
2
1
Natural Convection
1
0
Natural Convection
0
40
85
10
20
50
0
30
60
70
40
Ambient Temperature, Ta (˚C)
85
10
20
50
0
30
60
70
Ambient Temperature, Ta (˚C)
Output Current vs. Local Ambient
Temperature and Air Velocity
Output Current vs. Local Ambient
Temperature and Air Velocity
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 10
NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.5V – 5.0V Output / 3A
POWER PRODUCTS
BP05xRAH-03A
Output Voltage Set-Point Adjustment
Trim Down Test Circuit
Trim Up Test Circuit
Vo
Vo
Trim
Trim
Gnd
Gnd
Output Voltage Set-Point Adjustment
300
270
240
210
180
150
120
90
xRAH-03A500Trim Resistor Calculation
23.703
Rtrim down =
– 13.87) Kohm
(
60
Vo – Vo, adj
30
0
4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95
Adjusted output voltage Vo,adj (V)
5
300
270
240
210
180
150
120
90
4.496
Rtrim up =
– 8.25) Kohm
(
Vo, adj – Vo
60
30
0
5
5.05
5.1 5.15 5.2 5.25
5.3 5.35 5.4 5.45
5.5
Adjusted output voltage Vo,adj(V)
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 11
NON-ISOLATED DC/DC CONVERTERS
POWER PRODUCTS
12V Input / 1.5V – 5.0V Output / 3A
BP05xRAH-03A
Output Voltage Set-Point Adjustment
300
270
240
210
180
150
120
90
xRAH-03A330Trim Resistor Calculation
7.92
Vo – Vo, adj
Rtrim down =
– 4.38) Kohm
(
60
30
0
2.97
3
3.04 3.07 3.1 3.13 3.17 3.2 3.23 3.27 3.3
Adjusted output voltage Vo,adj (V)
300
270
240
210
180
150
120
90
2.536
– 1.21) Kohm
Rtrim up =
(
Vo, adj – Vo
60
30
0
3.3 3.33 3.37 3.4 3.43 3.46 3.5 3.53 3.56 3.6 3.63
Adjusted output voltage Vo,adj(V)
300
270
240
210
180
150
120
90
xRAH-03A250Trim Resistor Calculation
3.694
Rtrim down =
– 7.77) Kohm
(
60
Vo – Vo, adj
30
0
2.25 2.27 2.3 2.33 2.35 2.38 2.4 2.42 2.45 2.48 2.5
Adjusted output voltage Vo,adj (V)
300
270
240
210
180
150
120
90
1.72
– 5.62) Kohm
Rtrim up =
(
Vo, adj – Vo
60
30
0
2.5 2.52 2.55 2.58 2.6 2.63 2.65 2.67 2.7 2.73 2.75
Adjusted output voltage Vo,adj(V)
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 12
NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.5V – 5.0V Output / 3A
POWER PRODUCTS
BP05xRAH-03A
300
Output Voltage Set-Point Adjustment
270
240
210
xRAH-03A180Trim Resistor Calculation
180
150
120
90
3.849
Vo – Vo, adj
60
Rtrim down =
– 19.23) Kohm
(
30
0
1.62 1.64 1.66 1.67 1.69 1.71 1.73 1.75 1.76 1.78 1.8
Adjusted output voltage Vo,adj (V)
300
270
240
210
180
150
120
90
3.064
Rtrim up =
– 15.4) Kohm
(
Vo, adj – Vo
60
30
0
1.8 1.82 1.84 1.85 1.87 1.89 1.91 1.93 1.94 1.96 1.98
Adjusted output voltage Vo,adj(V)
300
270
240
210
180
150
120
90
xRAH-03A150Trim Resistor Calculation
2.698
Rtrim down =
– 14.83) Kohm
(
Vo – Vo, adj
60
30
0
1.35 1.37 1.38 1.4 1.41 1.43 1.44 1.46 1.47 1.49 1.5
Adjusted output voltage Vo,adj (V)
300
270
240
210
180
150
120
90
3.064
Rtrim up =
– 11) Kohm
(
Vo, adj – Vo
60
30
0
1.5 1.51 1.53 1.54 1.56 1.58 1.59 1.61 1.62 1.64 1.65
Adjusted output voltage Vo,adj(V)
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 13
NON-ISOLATED DC/DC CONVERTERS
POWER PRODUCTS
BP05xRAH-03A
12V Input / 1.5V – 5.0V Output / 3A
Mechanical
SRAH-03A
Suggested PCB Pad Layout
0.065 [1.65]
0.400
[10.16]
0.110
[2.79]
0.60
[15.24]
0.855
[21.72]
0.050
[1.27]
R0.015
[R0.38] typ
0.70
[17.78]
R0.008
[R0.20] typ
0.100 [2.54]
0.012
[0.30]
0˚-5˚
0.004 [0.10]
0.050
[1.27]
0.320
[8.13]
0.055 [1.40] 2x
0.090 [2.29] 2x
0.020
[0.51]
0.100
[2.54]
4x
0.780
[19.81]
0.400
[10.16]
Dimensions are in inches [millimeters].
Standard dimension tolerance is 0.005 [0.13] unless otherwise noted.
7
6
Pin
1
Function
Remote On/Off
+Vin
2
3
Ground
4
+Vo
5
Trim
6
No Connection
No Connection
1
3 4 5
2
7
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 14
NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.5V – 5.0V Output / 3A
POWER PRODUCTS
BP05xRAH-03A
Mechanical
0.700
[17.78]
VRAH-03A
0.050
[1.27]
0.600
[15.24]
0.265
[6.73]
min
0.050 [1.27]
0.100 [2.54]
0.400 [10.16]
0.020
[0.51]
0.308
[7.82]
Dimensions are in inches [millimeters].
Standard dimension tolerance is 0.005 [0.13] unless otherwise noted.
Pin
1
Function
Remote On/Off
+Vin
2
3
Ground
+Vo
4
5
Trim
1
2
3 4 5
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.
©2005 Bel Fuse Inc. Specifications subject to change without notice. 07.05
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
PrestonTechnology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel 44-1772-556601
Fax 44-1772-888366
www.belfuse.com
page 15
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SRAH-03C120G
DC-DC Regulated Power Supply Module, 1 Output, 3.6W, Hybrid, ROHS COMPLIANT PACKAGE-7
BEL
SRAH-03C120R
DC-DC Regulated Power Supply Module, 1 Output, 3.6W, Hybrid, ROHS COMPLIANT PACKAGE-7
BEL
SRAH-03C120RG
DC-DC Regulated Power Supply Module, 1 Output, 3.6W, Hybrid, ROHS COMPLIANT PACKAGE-7
BEL
SRAH-03C1500
DC-DC Regulated Power Supply Module, 1 Output, 4.5W, Hybrid, ROHS COMPLIANT PACKAGE-7
BEL
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