Document Number: 002-08393 Rev.*A

Page 16 of 37

MB39C601

8.7

PCL Part

It is set the peak current of Primary Winding by connecting resistor with the PCL pin.

The maximum peak current of Primary Side is set by connecting resistor (RPCL) between the PCL pin and GND.

100kV

)

An about 400ns blanking time of the beginning of switching cycle is masking the spike noise. As a result, it prevents the sense of

current from malfunctioning (See the figure below.).

Peak Current Control with PCL pin

FB

1

Driver

DRN

6

GND

7

PCL

3

Current

Sense

Current Modulator

1

3

165 210

1

3

165 210

From

Optocoupler

Emitter

From

High-Voltage

MOSFET Source