BEL S7DC

NON-ISOLATED DC/DC CONVERTERS
POWER PRODUCTS
3 – 15V Input / 1.8V Output / 16A
BP02S7DC-16D180
S7DC-16D180 Module
•
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
Description
The Bel S7DC-16D180 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 1.8V 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 3 to 15V source is available. Typical applications include file servers, routers, line cards and other computing and
communications equipment.
Applications
Options
•
Telecommunications
•
Double-ended remote sense
•
Networking
•
Power good signal and single-ended sense
•
Computers and peripherals
Part Number Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Part Number
Part Number
Power Good Signal
& Remote Sense
Part Number
Double-ended
Remote Sense
1.8V
3 - 15V
16A
29W
86%
S7DC-16D180
S7DC-16D18S
S7DC-16D18D
©2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
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 – 15V Input / 1.8V Output / 16A
BP02S7DC-16D180
Absolute Maximum Ratings
Parameter
Max
Unit
-0.3
15
V
Vouten
-0.3
6
V
Ambient Temperature
Tamb
0
70
°C
Storage Temperature
Tstor
-40
105
°C
Continuous Input Voltage
Output Enable Terminal Voltage1
Symbol
Min
Vin
Typical
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 resistor and the pin’s logic
is active high.
Input Specifications
Parameter
Symbol
Min
Operating Input Voltage
Vin
3.1
Input Current (Vin=3.3V)
Max
Units
15
V
Iin
10.8
A
Input Current (Vin=5.0V)
Iin
7
A
Input Current (Vin=12.0V)
Iin
3.2
A
No Load Input Current (Vin=3.3V)
Iin
200
mA
No Load Input Current (Vin=5.0V)
Iin
150
mA
No Load Input Current (Vin=12.0V)
Iin
110
mA
Input Reflected Ripple Current1
50
mArms
Input Reflected Ripple Current (P-P)1
100
mApk
I2t Inrush Current Transient
0.1
A 2s
Turn On Voltage Threshold2
Turn Off Voltage Threshold
Typical
2.92
2.8
2.85
V
2.90
V
Note: Input capacitance 100µF/16V, ESR = 0.03 Ω 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 7.
©2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
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
POWER PRODUCTS
3 – 15V Input / 1.8V Output / 16A
BP02S7DC-16D180
Output Specifications
Parameter
Symbol
Min
Typical
Max
Units
Output Voltage Set Point
Vout
1.80
1.82
1.85
V
Load Regulation (Droop Impedance)
Rout
2
2.5
3
mΩ
Line Regulation
Input Voltage 3.1V to 15V
15
25
Line Regulation
Input Voltage 5V ±20%
3
10
Regulation Over Temperature
0° - 70° C
10
25
Output Ripple and Noise1
25
40
mVp-p
Output Ripple and Noise1
10
20
mVrms
Output Current Range
Output DC Current Limit
Turn on Time
Vin to Vout or on/off to Vout
mV
mV
mV
Iout
0
16
A
Ioutlim
18
22
A
Ton
ms
Overshoot at Turn On
Output Capacitance
Cout
100
8
10
0
1
%
2200
µF
Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated.
1. 0 - 20MHz BW, 0.1µF ceramic cap on output.
©2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
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 – 15V Input / 1.8V Output / 16A
BP02S7DC-16D180
Output Specifications
Parameter
Symbol
Min
Typical
Max
Units
60
75
mV
100
120
µs
60
75
mV
100
120
µs
100
120
mV
100
120
µs
100
120
mV
100
120
µs
135
150
mV
100
120
µs
135
150
mV
100
120
µs
Transient Response 2 (Vin=3.3V)
∆V 50% to 100% of Max Load
Settling Time
Ts
∆V 100% to 50% of Max Load
Settling Time
Ts
Transient Response 2 (Vin=5.0V)
∆V 50% to 100% of Max Load
Settling Time
Ts
∆V 100% to 50% of Max Load
Settling Time
Ts
2
Transient Response (Vin=12.0V)
∆V 50% to 100% of Max Load
Settling Time
Ts
∆V 100% to 50% of Max Load
Settling Time
Ts
Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated.
2. di/dt = 1A/1µS, Ta = 25° C with a 560µF oscon cap on output.
©2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
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
POWER PRODUCTS
3 – 15V Input / 1.8V Output / 16A
BP02S7DC-16D180
General Specifications
Parameter
Symbol
Min
Typical
Efficiency1 (Vin=3.3V)
η
85
86
%
Efficiency2 (Vin=5.0V)
η
83
84
%
Efficiency3 (Vin=12.0V)
η
80
81
%
Fsw
495
550
Switching Frequency
Output Voltage Trim Range4
90
Max
Units
605
kHz
110
%
mV
Remote Sense Compensation
(when option specified)
300
16
Weight
g
1. Vin=3.3V, full load and Ta=25° C.
2. Vin=5.0V, full load and Ta=25° C.
3. Vin=12.0V, full load and Ta=25° C.
4. See graph on page 7.
Control Specifications
Parameter
Symbol
Remote On/Off
Open Circuit Voltage (Vin=3.3V)
Max
Units
Vouten
1.4
V
Remote On/Off
Open Circuit Voltage (Vin=5.0V)
Vouten
2.1
V
Remote On/Off
Open Circuit Voltage (Vin=12.0V)
Vouten
5.1
V
Remote On/Off
Impedance Limitation
(pin pulled up to +Vin)
Min
Typical
kΩ
Renable
11.5
Signal Low (Unit Off)
-0.3
0.3
V
Signal High (Unit On)
1.5
5.5
V
0.4
V
4
mA
Power Good Levels
(when option specified)
Vpg
Signal Low
0.18
Current Sink
Signal High
(signal is open collector)
V
5
4.8
V
Under Voltage Threshold
Vout rising
1.66
Under Voltage Threshold
Vout falling
1.62
V
Note: On/off pin designed to work with an open collector/drain switch.
©2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
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 – 15V Input / 1.8V Output / 16A
BP02S7DC-16D180
Efficiency Data
Module 1.80V
95%
Efficiency
90%
85%
3.3V
80%
5.0V
12V
75%
70%
65%
1.6
4.0
8.0
12.0
16.0
Output Current
©2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
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 – 15V Input / 1.8V Output / 16A
POWER PRODUCTS
BP02S7DC-16D180
UVLO
Termination Resistance
Termination
Resistance
Rising Vin
UVLO
Falling Vin
UVLO
Open Circuit
2.92V
2.85V
10.2K Ω
4.50V
4.14V
5.36K Ω
6.06V
5.28V
4.75K Ω
6.50V
5.60V
3.48K Ω
8.00V
6.58V
3.01K Ω
9.00V
7.14V
2.49K Ω
10.5V
8.00V
2.37K Ω
11.0V
8.26V
Output Voltage Trim Range
©2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
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 – 15V Input / 1.8V Output / 16A
BP02S7DC-16D180
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 µF external cap
©2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 8
POWER PRODUCTS
NON-ISOLATED DC/DC CONVERTERS
3 – 15V Input / 1.8V Output / 16A
BP02S7DC-16D180
Transient Response
Transient response: di/dt = 1.0A/µS
Vout=1.8V
50% to 100% load transients at 12.0V input and Ta=25° C
Vout=1.8V
100% to 50% load transients at 12.0V input and Ta=25° C
Transient response: di/dt = 1.0A/µS, external load capacitance 560µF
Vout=1.8V
50% to 100% load transients at 12.0V input and Ta=25° C
Vout=1.8V
100% to 50% load transients at 12.0V input and Ta=25° C
©2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
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 – 15V Input / 1.8V Output / 16A
BP02S7DC-16D180
Thermal Considerations
Derating Curve VIN = 12V
18
16
200LFM
Output Current (A)
14
100LFM
12
Natural Convection
10
8
6
4
2
0
0
10
20
30
40
50
60
70
Ambient Temperature, Ta (˚C)
Output Current vs. Local Ambient
Temperature and Air Velocity
Derating Curve VIN = 5V (and 3.3V where applicable)
18
16
200LFM
100LFM
Output Current (A)
14
12
Natural Convection
10
8
6
4
2
0
0
10
20
30
40
50
60
70
Ambient Temperature, Ta (˚C)
Output Current vs. Local Ambient
Temperature and Air Velocity
©2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
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
POWER PRODUCTS
3 – 15V Input / 1.8V Output / 16A
BP02S7DC-16D180
Mechanical
0.090
[2.29]
2.013
[51.13]
max
0.100
[2.54]
4
9
8
3
7
6
2
0.200 [5.08]
0.400
[10.17]
0.200
[5.08]
0.300
[7.62]
0.070
[1.78]
2.265
[57.52]
max
0.600
[15.23]
0.800 1.020
[20.33] [25.91]
max
0.120
[3.05]
5
1
2.125
[53.98]
2.305
[58.55]
Recommended PCB Pad Layout
0.400
[10.17]
max
Dimensions are in inches [millimeters].
Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted.
Pin
Function
1
Control Ground
2
On/Off Control
31
No Connection
42
No Connection
5
+Vo
6
Trim
7
Power Ground
8
Power Ground
9
+Vin
1. Pin 3 not used on module S7DC-16D180, used for
- sense on S7DC-16D18D and used for power good
signal on the S7DC-16D18S module.
2. Pin 4 not used on module S7DC-16D180, used for
+ sense on both the S7DC-16D18S and S7DC-16D18D
modules.
©2003 Bel Fuse Inc. Specifications subject to change without notice. 03.03
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
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
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
page 11