GREEN MODE PWM CONTROLLER

AP384XG

Preliminary Datasheet

BCD Semiconductor Manufacturing Limited

Electrical Characteristics (Continued)

Figure 4. Basic Test Circuit

1

2

8

7

AP3842G

3

45

6

OUTPUT

GND

COMP

OUTPUT

GND

1K

1W

5k

ADJUST

1k

ERROR AMP

ADJUST

4.7k

100k

2N2222

4.7k

0.1

µf

0.1

µf

A

Figure 4 is the basic test circuit for AP384XG. In testing, the high peak currents associated with capacitive loads necessitate

careful grounding techniques. Timing and bypass capacitors should be connected close to pin 5 in a single point ground. The

transistor and 5k potentiometer are used to sample the oscillator waveform and apply an adjustable ramp to pin 3.