NON-ISOLATED DC/DC CONVERTERS
POWER PRODUCTS
12V Input / 1.5V – 5.0V Output / 3A
BP02x7AH-03A
Output Voltage Set-Point Adjustment
300
270
240
210
180
150
120
90
x7AH-03A330Trim Resistor Calculation
7.92
Vo – Vo, adj
Rtrim down =
– 4.38) Kohm
(
60
30
0
2.97
3
3.04 3.07 3.1 3.13 3.17 3.2 3.23 3.27 3.3
Adjusted output voltage Vo,adj (V)
300
270
240
210
180
150
120
90
2.536
– 1.21) Kohm
Rtrim up =
(
Vo, adj – Vo
60
30
0
3.3 3.33 3.37 3.4 3.43 3.46 3.5 3.53 3.56 3.6 3.63
Adjusted output voltage Vo,adj(V)
300
270
240
210
180
150
120
90
x7AH-03A250Trim Resistor Calculation
3.694
Rtrim down =
– 7.77) Kohm
(
60
Vo – Vo, adj
30
0
2.25 2.27 2.3 2.33 2.35 2.38 2.4 2.42 2.45 2.48 2.5
Adjusted output voltage Vo,adj (V)
300
270
240
210
180
150
120
90
1.72
– 5.62) Kohm
Rtrim up =
(
Vo, adj – Vo
60
30
0
2.5 2.52 2.55 2.58 2.6 2.63 2.65 2.67 2.7 2.73 2.75
Adjusted output voltage Vo,adj(V)
©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 12
BEL [ BEL FUSE INC. ]
