PJ494
Switchmode Pulse Width Modulation Control Circuit
Figure 20. Pulse Width Modulated Push-Pull Converter
Test
Line Regilation
Load Regilation
Output Ripple
Short Circuit Current
Efficiency
Condition
VIN = 10V to 40V
VIN = 28V, Io =1.0mA to 10A
VIN = 28V, Io =1.0A
VIN = 29V, RL=0.1Ω
VIN = 28V, Io =1.0A
L1 – 3.5mH @ 0.3A
T1 – Primary : 20T C.T. #28 AWG
Secondary : 120T C.T. #36 AWG
Core : Ferroxcube 1408P-L00-3CB
Result
14mV 0.28%
3.0mV 0.06%
65mV pp P.A.R.D
1.6A
71%
9-11
2002/11.rev.A