The control circuit N7820M consists of an oscillator (oscillating frequency agt; 20KHz), a comparator and a pulse width modulation block. ... Figure 2 is the circuit diagram for a 5V 50W or a 5V 200W switched-mode regulated computer supply. PWM is ... For the 200W model, the power dissipation on the output diodes is 25W and on the transistor Tr is 10W. The peak to peak ripple is 25mV max. at full load. The load regulation curve shows an o/p voltage drop of 0.05V at full load (40 amps).
|Title||:||Conference Digest - International Electrical, Electronics Conference and Exposition|