This design uses the TL594 integrated circuit based on the following parameters:
- VO = 5 V
- VI = 32 V
- IO = 10 A
- f = 20 kHz Switching Frequency
- VR = mV peak-to-peak (Vripple)
- ΔIL = 1.5 A Inductor Current Change
INPUT POWER SOURCE
The 32 V de power source for this supply uses a 120 V input, 24 V output transformer rated at 75 VA. The 24 V secondary winding feeds a full-wave bridge rectifier followed by a current limit resistor (0.3 ohm) and two filter capacitors, as shown in Figure 6-19.
The 3A/50 V full-wave bridge rectifier meets these calculated conditions. Figure 6-20 illustrates the switching and control section.