SLIN-20E1A_10 Datasheet, PDF (21/26 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input, 0.69 Vdc - 5.5 Vdc /20 A Outputs
December 10, 2010
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Thermal Considerations (continued)
The preferred airflow direction and the thermal reference points, T_ref, used in the specifications are shown below.
For reliable operation the temperatures at these points should not exceed 125^oC. The output power of the
module should not exceed the rated power of the module (Vo,set x Io,max).
Preferred airflow direction and location of hot-spot of the module (Tref).
Example Application Circuit
Requirements:
Vin:
12V
Vout:
1.8V
Iout:
15A max., worst case load transient is from 10A to 15A
ΔVout:
1.5% of Vout (36mV) for worst case load transient
Vin, ripple
1.5% of Vin (180mV, p-p)
Vin+
VIN
VOUT
S+
RTUNE
+
CI2
MODULE
CI1
Q1 ^{ON/OFF TRIM}
S-
GND
CTUNE
RTrim
Vout+
CO1
+
CO2
CI1
CI2
CO1
CO2
CTune
RTune
RTrim
2 x 22μF/16V ceramic capacitor (e.g. Murata GRM32ER61C226KE20)
200μF/16V bulk electrolytic
5 x 47μF/6.3V ceramic capacitor (e.g. Murata GRM31CR60J476ME19)
2 x 330μF/6.3V Polymer (e.g. Sanyo, Poscap)
22nF ceramic capacitor (can be 1206, 0805 or 0603 size)
150 ohms SMT resistor (can be 1206, 0805 or 0603 size)
6.19kΩ SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%)
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
21