NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.5V – 5.0V Output / 3A
POWER PRODUCTS
BP02x7AH-03A
Output Voltage Set-Point Adjustment
Trim Down Test Circuit
Vo
Trim Up Test Circuit
Vo
Trim
Trim
Gnd
Gnd
Output Voltage Set-Point Adjustment
300
Trim resistor value Rtrim_down(Kohm)
270
240
210
180
150
120
90
60
30
0
4.5
4.55
4.6
4.65 4.7 4.75 4.8 4.85
Adjusted output voltage Vo,adj (V)
4.9
4.95
5
x7AH-03A500 Trim Resistor Calculation
Rtrim down =
(
23.703
– 13.87
)
Kohm
Vo – Vo, adj
300
Trim resistor value,Rtrim_up(Kohm)
270
240
210
180
150
120
90
60
30
0
5
5.05
5.1
5.15 5.2 5.25
5.3 5.35
Adjusted output voltage Vo,adj(V)
5.4
5.45
5.5
Rtrim up =
(
4.496
– 8.25
)
Kohm
Vo, adj – Vo
©2003 Bel Fuse Inc.
Specifications subject to change without notice. 01.03
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 11
BEL [ BEL FUSE INC. ]
