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11/19

Rev.0.0

Dual-ChannelIsolatedGateDriver

BTD21520x

9.FunctionDescription

9.1BlockDiagram

Figure7.BlockDiagram

9.2InputandOutputLogicTable

When VCC and VDD are powered on, the relevant input and output logic information is as follows:

BTD21520M

BTD21520S

BTD21520E

INPUT

DIS

OUTPUT

DESCRIPTION

IN1

IN2

OUT1

OUT2

L

L

L or left open

L

L

If dead time function is used, output switching occurs after

the dead time ended.See Programmable Dead Time (DT) pin

L

H

L or left open

L

H

H

L

L or left open

H

L

Dead time stay open or programmed with RDT

H

H

L or left open

H

H

Dead time pin pulled to VCC

Left open Left open L or left open

L

L

-

X

X

H

L

L

-

1

4

7

Reinforced

Isolation

Functional Isolation

MOD

Deadti me

Control

MOD

VCC

200k

200k

200k

IN1

VCC

GND

DT

DIS

IN2

NC

10

OUT2

11 VDD2

9

VEE2

UVLO

15

OUT1

DEMOD

DEMOD

3,8

6

2

14

VEE1

16 VDD1

UVLO

5

INPUT

DIS

OUTPUT

DESCRIPTION

IN1

IN2

OUT1

OUT2

L

L

L or left open

L

L

No internal dead time setting, two output channels are inde-

pendent

L

H

L or left open

L

H

H

L

L or left open

H

L

H

H

L or left open

H

H

Left open Left open L or left open

L

L

-

X

X

H

L

L

-

PWMINPUT

DIS

OUTPUT

DESCRIPTION

OUT1

OUT2

H

L

H

L

If dead time function is used, output jumps after dead time ended.

See Programmable Dead Time (DT) pin

L/Left open

L

L

H

X

H

L

L

Device disabled

(1) "X" means L, H or left open.