Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP06SRDC-16D250
4.50 15V Input / 2.5V Output / 16A
Description
The Bel SRDC-16D250 module is one in a series of non-isolated, DC/DC power converters that operate from a wide input
range of 3V minimum to 15V maximum. This converter is available with 2.5V output. It uses a low profile, surface mount DIP
package for ease of layout and space savings. 16A maximum output is also provided. Standard features include remote
on/off, over current and short circuit protection, programmable UVLO and output voltage adjust. Optional features include
two-wire remote sense or single-ended remote sense with a good power signal. This module also makes use of adaptive
positioning to improve transient response performance. It may be used almost anywhere low voltage silicon is employed
and a 4.50 to 15V source is available. Typical applications include file servers, routers, line cards and other computing and
communications equipment.
Applications
page 1
SRDC-16D250 Module
Telecommunications
Networking
Computers and peripherals
Part Number Selection
Options
Double-ended remote sense
Power good signal
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Nonisolated
Industry standard pinout
Fixed frequency
High efficiency means less power dissipation
High power density
Optimized for cost
Remote on/off
Programmable undervoltage lockout (UVLO)
Over current and short circuit protection
Two phase operation
Non-latching over temperature shutdown protection
RoHS Compliant
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP06SRDC-16D250
4.50 15V Input / 2.5V Output / 16A
page 2
Input Specifications
Absolute Maximum Ratings
Note: Use beyond the maximum ratings may cause a reliability degradation of the DC/DC
converter or may permanently damage the device.
1. The enable pin performs two functions, remote on/off and programmable under voltage
lockout. The factory set UVLO point is 3.0V typical, but can be adjusted upward with the
addition of a single external resistor located from the enable pin to ground. Turning the
converter on and off is accomplished using an open collector/drain device as a switch.
The enable pin is internally pulled up to Vin through a 12.1K ohm resistor and the pin's
logic is active high.
Note: Input capacitance 100F/16V, ESR = 0.03
max at 100kHz @ 25 C.
1. With simulated source impedance of 500nH, 5Hz to 20MHz.
2. UVLO is adjustable by terminating on/off pin to ground per the termination resistance table
on page 6.
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Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP06SRDC-16D250
4.50 15V Input / 2.5V Output / 16A
page 3
Output Specifications
Note: All specifications are typical at nominal input, full load at 25 C unless otherwise stated.
1. 0 - 20MHz BW, 0.1F ceramic cap on output.
2. di/dt = 1A/1S, Ta = 25 C with a 560F oscon cap on output.
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Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP06SRDC-16D250
4.50 15V Input / 2.5V Output / 16A
page 4
General Specifications
1. Vin=5V, full load and Ta=25 C.
2. Vin=12V, full load and Ta=25 C.
3. See graph on page 6.
Note: On/off pin designed to work with an open collector/drain switch.
Control Specifications
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Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP06SRDC-16D250
4.50 15V Input / 2.5V Output / 16A
page 5
Efficiency Data
Module 2.50V
0%
20%
40%
60%
80%
100%
1.6
4.0
8.0
12.0
16.0
Output Current
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5.0V
12V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP06SRDC-16D250
4.50 15V Input / 2.5V Output / 16A
Termination Resistance
Output Voltage Trim Range
UVLO
page 6
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Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP06SRDC-16D250
4.50 15V Input / 2.5V Output / 16A
Ripple and Noise
Ripple and noise at full load and 12.0Vdc input,
and Ta=25 C
Ripple and noise at full load and 12.0Vdc input,
and Ta=25 C with 560 F external cap
page 7
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP06SRDC-16D250
4.50 15V Input / 2.5V Output / 16A
page 8
Transient Response
Transient response: di/dt = 1.0A/S
Vout=2.5V
50% to 100% load transients at 12.0V input and Ta=25 C
Vout=2.5V
100% to 50% load transients at 12.0V input and Ta=25 C
Vout=2.5V
50% to 100% load transients at 12.0V input and Ta=25 C
Vout=2.5V
100% to 50% load transients at 12.0V input and Ta=25 C
Transient response: di/dt = 1.0A/S, external load capacitance 560F
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP06SRDC-16D250
4.50 15V Input / 2.5V Output / 16A
page 9
Thermal Considerations
Derating Curve VIN = 12V
Output Current (A)
Output Current vs. Local Ambient
Temperature and Air Velocity
Ambient Temperature, Ta (C)
0
10
20
30
40
50
60
70
6
8
10
12
14
16
18
4
2
0
Natural Convection
100LFM
200LFM
Derating Curve VIN = 5V (and 3.3V where applicable)
Natural Convection
100LFM
200LFM
Output Current (A)
6
8
10
12
14
16
18
4
2
0
Output Current vs. Local Ambient
Temperature and Air Velocity
Ambient Temperature, Ta (C)
0
10
20
30
40
50
60
70
CORPORATE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel
201-432-0463
Fax
201-432-9542
www.belfuse.com
FAR EAST
Bel Fuse Ltd.
8F / 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel
852-2328-5515
Fax 852-2352-3706
www.belfuse.com
EUROPE
Bel Fuse Europe Ltd.
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
2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP06SRDC-16D250
4.50 15V Input / 2.5V Output / 16A
page 10
1. Pin 3 not used on module S7DC-16D250, used for
- sense on S7DC-16D25D and used for power good
signal on the S7DC-16D33S module.
2. Pin 4 not used on module S7DC-16D250, used for
+ sense on both the S7DC-16D25S and S7DC-16D25D
modules.
0.070
[1.78]
2.265
[57.52]
max
0.400
[10.17]
max
0.100
[2.54]
0.200 [5.08]
0.300
[7.62]
2.013
[51.13]
max
0.200
[5.08]
0.400
[10.17]
0.600
[15.23]
0.800
[20.33]
1.020
[25.91]
max
0.120
[3.05]
0.090
[2.29]
2.125
[53.98]
2.305
[58.55]
Recommended PCB Pad Layout
Dimensions are in inches [millimeters].
Standard dimension tolerance is 0.005 [0.13] unless otherwise noted.
1
2
3
4
6
7
8
9
5
n
i
P
n
o
i
t
c
n
u
F
1
d
n
u
o
r
G
l
o
r
t
n
o
C
2
l
o
r
t
n
o
C
f
f
O
/
n
O
3
1
n
o
i
t
c
e
n
n
o
C
o
N
4
2
n
o
i
t
c
e
n
n
o
C
o
N
5
o
V
+
6
m
i
r
T
7
d
n
u
o
r
G
r
e
w
o
P
8
d
n
u
o
r
G
r
e
w
o
P
9
n
i
V
+
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 240C.
Mechanical
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