Bus Converter
48V Input / 12V Output / 20A
Output Specifications (continued)
Parameter
Min
Typ
Max
Notes
Transient Response
di/dt =0 .1A/uS, Vin =48VDC
Max deviation
Recovery to within ± 1%
200mV
50uS
350mV
100uS
Ta = 25°C, 25% load change.
General Specifications
Pin Connections
Parameter
Specification
Pin
Function
Switching Frequency
Dimensions
120kHz typical (fixed)
1
2
3
4
5
+ Vin
Remote On/Off
- Vin
inches
mm
2.28 x 1.45 x 0.50
57.9 x 36.8 x 12.7
42g (1.5oz)
- Vout
+ Vout
Weight
Operating Temperature
0°C to 70°C
Non-Operating Temperature
MTBF (MIL-HDBK-217K)
Protection Features
-55°C to 125°C
>1,000,000 hours
Short circuit
Over current
Undervoltage
Continuous
120% to 140% max Io
UVLO Vin < 39.0
Remote On/Off
Active Low
(Optional Active High)
Safety Agency Approvals
Low: 0V to 0.8V
High: 2.4V to 18V
UL / cUL Recognized
Certified to EN60950
(pending)
100.00%
95.00%
90.00%
85.00%
80.00%
75.00%
70.00%
65.00%
60.00%
2.28”
1
2
3
+ Vout
+ Vin
on/off
- Vin
5
4
1.45”
- Vout
1
2.5
5
10
15
20
Top View
Efficiency vs. Output Current (A)
2003 Bel Fuse Inc. Specifications subject to change without notice. 011303
CORPORATE
Bel Fuse Inc.
FAR EAST
EUROPE
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
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
BEL [ BEL FUSE INC. ]
