Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP02S7DC-16D330
4.75 15V Input / 3.3V Output / 16A
Description
The Bel S7DC-16D330 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 3.3V 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 4.75 to 15V source is available. Typical applications include file servers, routers, line cards and other computing and
communications equipment.
Applications
page 1
S7DC-16D330 Module
Telecommunications
Networking
Computers and peripherals
Part Number Selection
Options
Double-ended remote sense
Power good signal and single-ended sense
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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
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP02S7DC-16D330
4.75 15V Input / 3.3V 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 4.25V 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 11.5K 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
2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP02S7DC-16D330
4.75 15V Input / 3.3V 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
2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP02S7DC-16D330
4.75 15V Input / 3.3V 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.
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Control Specifications
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP02S7DC-16D330
4.75 15V Input / 3.3V Output / 16A
page 5
Efficiency Data
Module 3.30V
75%
80%
85%
90%
95%
1.6
4.0
8.0
12.0
16.0
Output Current
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12V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP02S7DC-16D330
4.75 15V Input / 3.3V Output / 16A
Termination Resistance
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UVLO
page 6
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP02S7DC-16D330
4.75 15V Input / 3.3V 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
2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP02S7DC-16D330
4.75 15V Input / 3.3V Output / 16A
page 8
Transient Response
Transient response: di/dt = 1.0A/S
Vout=3.3V
50% to 100% load transients at 12.0V input and Ta=25 C
Vout=3.3V
100% to 50% load transients at 12.0V input and Ta=25 C
Vout=3.3V
50% to 100% load transients at 12.0V input and Ta=25 C
Vout=3.3V
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
2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP02S7DC-16D330
4.75 15V Input / 3.3V 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
2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
BP02S7DC-16D330
4.75 15V Input / 3.3V Output / 16A
page 10
Mechanical
1. Pin 3 not used on module S7DC-16D330, used for
- sense on S7DC-16D33D and used for power good
signal on the S7DC-16D33S module.
2. Pin 4 not used on module S7DC-16D330, used for
+ sense on both the S7DC-16D33S and S7DC-16D33D
modules.
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
+
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
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