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2

Typical Application

Up to 600V

To Load

VCC

IN

SHUTDOWN

/DEAD TIME

1

2

3

4

5

6

7

8

VCC

IN

SD/DT

COM

LO

VS

HO

VB

R1

R2

VDT

VDT = Vdd*R2 / (R1+R2). Vdd is output voltage of Microcontroller.

The operating range that allows a VDT range of 1.2~3.3V.

Care must be taken to avoid below threshold spikes on pin 3 that can cause undesired shut down of the IC.

For this reason the connection of the components between pin 3 and ground has to be as short as possible.

And a capacitor (Typ. 0.02µF )between pin3 and COM can prevent this spike. This pin can not be left

floating for the same reason.

Figure 2.

Typical Application

Block Diagram

DEADTIME

CONTROL

DELAY

PULSE

GENERATOR

PULSE

FILTER

UVLO

R

R

S

Q

UVLO

VCC

COM

LO

VB

HO

VS

IN

SD/DT

500kΩ

500kΩ

vreg

VCC

VCC

vreg

Figure 3.

Block Diagram