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S7DB-12B250

Description
NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V - 3.3V Output / 12A
File Size270KB,13 Pages
ManufacturerBel
Websitehttp://www.belfuse.com
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S7DB-12B250 Overview

NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V - 3.3V Output / 12A

S7DB-12B250 Preview

NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V – 3.3V Output / 12A
S7DB-12B 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
Remote sense
POWER PRODUCTS
BP02S7DB-12B
Description
The Bel S7DB-12B modules are a series of non-isolated, step down DC/DC power converters that operate from a nominal 5V
source. These converters are available in a range of output voltages from 1.2V to 3.3V. They are packaged in a compact, low
profile, surface mount DIP package for ease of layout and space savings. 12A maximum output is also provided. Standard
features include remote on/off, remote sense, over current and short circuit protection, UVLO and output voltage adjust.
These products may be used almost anywhere low voltage silicon is employed and a 5V source is available. Typical applica-
tions 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
3.3V
2.5V
1.8V
1.5V
1.2V
Input
Voltage
5V
5V
5V
5V
5V
Max. Output
Current
12A
12A
12A
12 A
12A
Max. Output
Power
39.6W
30.0W
21.6W
18.0W
14.4W
Typical
Efficiency
92%
90%
86%
84%
82%
Part Number
S7DB-12B330
S7DB-12B250
S7DB-12B180
S7DB-12B150
S7DB-12B120
©2004 Bel Fuse Inc.
Specifications subject to change without notice. 03.04
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 1
POWER PRODUCTS
BP02S7DB-12B
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V – 3.3V Output / 12A
Absolute Maximum Ratings
Parameter
Continuous Input Voltage
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Symbol
Vin
Vouten
Tamb
Tstor
Min
-0.3
-0.3
-40
-55
Typical
Max
6
6
85
100
Unit
V
V
°C
°C
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
Operating Input Voltage
Input Current
3.3V
2.5V
1.8V
1.5V
1.2V
No Load Input Current
Remote Off Input Current
Input Reflected Ripple Current
1
Input Reflected Ripple Current (P-P)
1
I
2
t Inrush Current Transient
Turn On Voltage Threshold
Turn Off Voltage Threshold
All
All
All
All
All
All
50
10
40
140
0.1
4.3
3.85
20
80
280
0.2
4.5
4.49
Module
All
Symbol
Vin
Iin
11.2
8.7
6.6
5.5
4.5
mA
mA
mA
rms
mApk
A
2
s
V
V
Min
4.5
Typical
5
Max
5.5
Units
V
A
Note: Input capacitance two 270µF/10V, ESR = 0.018
max at 100kHz @ 25° C.
1. With simulated source impedance of 500nH, 5Hz to 20MHz.
©2004 Bel Fuse Inc.
Specifications subject to change without notice. 03.04
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
5V Input / 1.2V – 3.3V Output / 12A
POWER PRODUCTS
BP02S7DB-12B
Output Specifications
Parameter
Output Voltage Set Point
1
3.3V
2.5V
1.8V
1.5V
1.2V
Load Regulation
3.3V
2.5V
1.8V
1.5V
1.2V
Line Regulation
Regulation Over Temperature
3.3V
2.5V
1.8V
1.5V
1.2V
Total Output Voltage Regulation
3.3V
2.5V
1.8V
1.5V
1.2V
Output Ripple and Noise
2
Output Ripple and Noise
2
Output Current Range
Output DC Current Limit
Shor t Circuit Surge
3.3V
2.5V
1.8V
1.5V
1.2V
Turn on Time
Overshoot at Turn On
Output Capacitance
All
All
All
Cout
0
Ton
All
All
All
All
Iout
Ioutlim
Ioutsurge
0.25
0.3
0.35
0.45
0.5
12
0
0.5
0.6
0.7
0.9
1
20
3%
4800
ms
V
µF
0
15.6
30
10
62
51
40
35
32
60
25
12
30
mVp-p
mVrms
A
A
A
2
s
22
17
12
10
8
45
34
25
20
17
mV
All
6.0
6.0
6.0
6.0
6.0
2.0
12
12
10
10
10
5
mV
mV
Module
Symbol
Vout
3.234
2.45
1.764
1.47
1.176
3.3
2.5
1.8
1.5
1.2
3.366
2.55
1.836
1.53
1.224
mV
Min
Typical
Max
Units
V
Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated.
1. Vin = 5V, Iout = full load, Ta = 25° C.
2. 0 - 20MHz, 1µF ceramic cap and 10µF aluminum cap on output.
©2004 Bel Fuse Inc.
Specifications subject to change without notice. 03.04
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 3
POWER PRODUCTS
BP02S7DB-12B
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V – 3.3V Output / 12A
Output Specifications
Parameter
Transient Response
3
Module
Symbol
Min
Typical
Max
Units
V 50% to 100% of Max Load
Settling Time
3.3V
V 100% to 50% of Max Load
Settling Time
Transient Response
3
90
Ts
35
90
Ts
35
120
70
120
70
mV
µs
mV
µs
V 50% to 100% of Max Load
Settling Time
2.5V
V 100% to 50% of Max Load
Settling Time
Transient Response
3
90
Ts
35
90
Ts
35
120
70
120
70
mV
µs
mV
µs
V 50% to 100% of Max Load
Settling Time
1.8V
V 100% to 50% of Max Load
Settling Time
Transient Response
3
90
Ts
35
90
Ts
35
120
70
120
70
mV
µs
mV
µs
V 50% to 100% of Max Load
Settling Time
1.5V
V 100% to 50% of Max Load
Settling Time
Transient Response
3
90
Ts
35
90
Ts
35
120
70
120
70
mV
µs
mV
µs
V 50% to 100% of Max Load
Settling Time
1.2V
V 100% to 50% of Max Load
Settling Time
Ts
Ts
90
35
90
35
120
70
120
70
mV
µs
mV
µs
Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated.
3. di/dt = 0.5A/1µS, Ta = 25° C without external load capacitance.
©2004 Bel Fuse Inc.
Specifications subject to change without notice. 03.04
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
5V Input / 1.2V – 3.3V Output / 12A
POWER PRODUCTS
BP02S7DB-12B
General Specifications
Parameter
Efficiency
1
3.3V
2.5V
1.8V
1.5V
1.2V
Switching Frequency
Output Voltage Trim Range
2
Remote Sense Compensation
Weight
All
All
All
All
10.5
Fsw
Module
Symbol
η
89
87
83
81
89
260
90
92
90
86
84
82
300
340
110
10
kHz
%
Min
Typical
Max
Units
%
%
g
1. Vin=5V, full load and Ta=25° C.
2. See graphs on pages 10-12.
Control Specifications
Parameter
Remote On/Off
3
Signal Low (Unit On)
Signal High (Unit Off)
Module
All
All
All
Symbol
Vouten
0
2.5
1
5.5
Min
Typical
Max
Units
V
V
V
3. With remote on/off pin 8 open, the module is on.
©2004 Bel Fuse Inc.
Specifications subject to change without notice. 03.04
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 5

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S7DB-12B250 S7DB-12B S7DB-12B180 S7DB-12B330 S7DB-12B120 S7DB-12B150
Description NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V - 3.3V Output / 12A NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V - 3.3V Output / 12A NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V - 3.3V Output / 12A NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V - 3.3V Output / 12A NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V - 3.3V Output / 12A NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V - 3.3V Output / 12A
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