VRAH-05C150 [BEL]
NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 1.2V - 2.5V Output / 5A; 非隔离式DC / DC转换器输入3.3V / 1.2V - 2.5V输出/ 5A
| 型号： | VRAH-05C150 |
| 厂家： | 
BEL FUSE INC. |
| 描述： | NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 1.2V - 2.5V Output / 5A |
| 文件： | 总14页 (文件大小：210K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NON-ISOLATED DC/DC CONVERTERS
3.3V Input / 1.2V – 2.5V Output / 5A
POWER PRODUCTS
BP05xRAH-05C
SRAH-05C / VRAH-05C Series
•
•
•
•
•
•
•
•
•
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-05C and VRAH-05C modules are a series of non-isolated, step down DC/DC power converters that operate
from a nominal 3.3V source. These converters are available in a range of output voltages from 1.2V to 2.5V. They are pack-
aged in a compact, overmolded package rated at 5A. 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
3.3V 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
2.5V
1.8V
1.5V
1.2V
3.3V
3.3V
3.3V
3.3V
5A
5A
5A
5A
12.5W
9.0W
7.5W
6W
91%
88%
86%
83%
SRAH-05C250
SRAH-05C180
SRAH-05C150
SRAH-05C120
VRAH-05C250
VRAH-05C180
VRAH-05C150
VRAH-05C120
©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
BP05xRAH-05C
Absolute Maximum Ratings
Parameter
Symbol
Min
-0.3
-0.3
-40
Typical
Max
6
Unit
V
Continuous Input Voltage
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Vin
Vouten
Tamb
Tstor
6
V
85
105
°C
°C
-40
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
3
3.6
V
A
2.5V
1.8V
1.5V
1.2V
4.8
4.0
3.5
3.0
No Load Input Current
mA
mA
All
90
10
Remote Off Input Current
3
30
Input Reflected Ripple Current1
mArms
All
All
All
All
All
45
Input Reflected Ripple Current (P-P)1
I2t Inrush Current Transient
Turn On Voltage Threshold
Turn Off Voltage Threshold
100
150
0.001
2.7
mApk
A2s
V
0.0005
2.6
2.5
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. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
POWER PRODUCTS
BP05xRAH-05C
Output Specifications
Parameter
Module
Symbol
Min
Typical
Max
Units
Output Voltage Set Point 1
Vout
V
2.5V
1.8V
1.5V
1.2V
2.450
1.764
1.470
1.176
2.500
1.800
1.500
1.200
2.550
1.836
1.530
1.224
Load Regulation
All
All
All
All
All
All
All
All
5
10
5
mV
mV
Line Regulation
3
Regulation Over Temperature
Total Output Voltage Regulation
Output Ripple and Noise 2
Output Ripple and Noise 2
Output Current Range
Output DC Current Limit
Short Circuit Surge
20
28
30
10
30
45
80
20
5
mV
mV
mVp-p
mVrms
A
Iout
0
6
Ioutlim
10
A
Ioutsurge
A2s
2.5V
1.8V
1.5V
1.2V
0.07
0.07
0.07
0.07
0.1
0.1
0.1
0.1
Turn on Time
All
All
All
Ton
7
0
15
1
ms
%
Overshoot at Turn On
Output Capacitance
Transient Response 3
∆V 50% to 100% of Max Load
Settling Time
Cout
0
2200
µF
80
80
80
80
170
120
170
120
mV
µs
Ts
Ts
All
∆V 100% to 50% of Max Load
Settling Time
mV
µs
Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated.
1. Vin = 3.3V, Iout = full load, Ta = 25° C.
2. 0 - 20MHz, 1µF ceramic cap and 10µF aluminum cap on output.
3. di/dt = 0.5A/1µS, Ta = 25° C without external load capacitance.
©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
BP05xRAH-05C
General Specifications
Parameter
Module
Symbol
Min
Typical
Max
Units
Efficiency1
%
η
2.5V
1.8V
1.5V
1.2V
89
86
84
81
91
88
86
83
Switching Frequency
Fsw
kHz
%
All
570
600
630
Output Voltage Trim Range2
2.5V
1.8V
1.5V
1.2V
90
90
90
90
105
110
110
110
Weight
All
4.9
g
1. Vin=3.3V, full load and Ta=25° C.
2. See graphs on pages 10-12.
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
1.8
1
V
V
3.6
3. With remote on/off pin 1 open, the module is on.
©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
POWER PRODUCTS
BP05xRAH-05C
Efficiency Data
Module 1.8V
Module 2.5V
94%
92%
90%
88%
86%
84%
82%
96%
94%
92%
90%
88%
86%
3.0V
3.3V
3.6V
3.0V
3.3V
3.6V
1
2
3
4
5
1
2
3
4
5
Output Current
Output Current
Module 1.5V
Module 1.2V
89%
88%
87%
86%
85%
84%
83%
82%
81%
80%
79%
78%
92%
90%
88%
86%
84%
82%
80%
3.0V
3.3V
3.6V
3.0V
3.3V
3.6V
1
2
3
4
5
1
2
3
4
5
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. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
BP05xRAH-05C
Ripple and Noise
1µF ceramic cap and 10µF aluminum cap added at the output.
Ripple and noise at full load and 3.3Vdc input,
1.8Vdc output and Ta=25° C
Ripple and noise at full load and 3.3Vdc input,
2.5Vdc output and Ta=25° C
Ripple and noise at full load and 3.3Vdc input,
1.5Vdc output and Ta=25° C
Ripple and noise at full load and 3.3Vdc input,
1.2Vdc output and Ta=25° C
©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
POWER PRODUCTS
BP05xRAH-05C
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 3.3V input and Ta=25° C
100% to 50% load transients at 3.3V input and Ta=25° C
Vout=1.8V
Vout=1.8V
50% to 100% load transients at 3.3V input and Ta=25° C
100% to 50% load transients at 3.3V input and Ta=25° C
©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
BP05xRAH-05C
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 3.3V input and Ta=25° C
100% to 50% load transients at 3.3V input and Ta=25° C
Vout=1.2V
Vout=1.2V
50% to 100% load transients at 3.3V input and Ta=25° C
100% to 50% load transients at 3.3V input and Ta=25° C
©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
POWER PRODUCTS
BP05xRAH-05C
Thermal Considerations
SRAH-05C
VRAH-05C
©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
BP05xRAH-05C
Output Voltage Set-Point Adjustment
Trim Down Test Circuit
Trim Up Test Circuit
Vo
Vo
Trim
Trim
Gnd
Gnd
Output Voltage Set-Point Adjustment
xRAH-05C250Trim Resistor Calculation
9.5565
Vo – Vo, adj
Rtrim down =
– 20.32) Kohm
(
4.496
Rtrim up =
– 14.7) Kohm
(
Vo, adj – Vo
©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
POWER PRODUCTS
BP05xRAH-05C
Output Voltage Set-Point Adjustment
xRAH-05C180Trim Resistor Calculation
3.8488
Vo – Vo, adj
Rtrim down =
– 18.54) Kohm
(
3.064
– 14.7) Kohm
Rtrim up =
(
Vo, adj – Vo
x7AH-05C150Trim Resistor Calculation
2.6977
Vo – Vo, adj
Rtrim down =
– 15.33) Kohm
(
3.064
– 11.5) Kohm
Rtrim up =
(
Vo, adj – Vo
©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
BP05xRAH-05C
Output Voltage Set-Point Adjustment
xRAH-05C120Trim Resistor Calculation
0.8501
Vo – Vo, adj
Rtrim down =
– 6.79) Kohm
(
1.72
Rtrim up =
– 4.64) Kohm
(
Vo, adj – Vo
©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
POWER PRODUCTS
BP05xRAH-05C
Mechanical
SRAH-05C
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. 03.05
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
3.3V Input / 1.2V – 2.5V Output / 5A
POWER PRODUCTS
BP05xRAH-05C
0.700
[17.78]
Mechanical
VRAH-05C
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. 03.05
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 14
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