Datasheet
cui.com
CUI Inc │ SERIES: V78-500 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 11/08/2012 │ page 4 of 6
TYPICAL APPLICATION CIRCUIT
TEST CIRCUIT
+
+Vin
GND
+Vout
0V
DC Power
Source
-
Current
Meter
Voltage
Meter
Cin
DC/DC
Converter
Cout
Twisted
30cm, 18AWG
A
B
C01
C02
AAA
BB
B
+
-
+
Current
Meter
Voltage
Meter
Electronic
Load
20MHz
Oscilloscope
1. Cin = 10μF / 50V for 500mA and 22μF / 50V for 1A, Cout = 100μF / 16V.
2. C01 = 10μF / 50V Electrolytic, C02 = 0.1μF / 50V Ceramic.
3. All points labeled A refer to one junction.
4. All points labeled B refer to one junction.
5. Use a short ground loop for probing. Do not use a wired ground clip.
1. C1 and C2 are required and should be fi tted close to the converter pins
2. For the capatance of C1 and C2, see the external capacitor table. Low ESR types should be chosen
3. C3: a low ESR capacitor is required to keep the noise at the converter to a minimum. Ceramic capacitors are preffered, but tantalum of
low ESR electrolytic capacitors may also suffi ce; General use 10F/50V ceramic capacitor. C4 Optional, General use 100F/25V
electrolytic capacitor.
4. No parallel connection or plug and play
For more information, please visit the product page.