AN2738 datasheet(5/54 Pages) STMICROELECTRONICS

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AN2738

Pin description

Doc ID 14589 Rev 2

5/54

Pin description

Table 1.

Pin description

Pin n°

Pin name

Type

Function

1LIN

Low side driver logic input (active low)

2SD/OD(1)

The circuit provides less than 1 V on the LVG and HVG pins (@ Isink = 10 mA), with VCC > 3 V. This allows

the omission of the “bleeder” resistor connected between the gate and the source of the external MOSFET

normally used to hold the pin low. The gate driver ensures low impedance in SD conditions also. See

Section 4.

I/O

Shutdown logic input (active low)/open drain

(comparator output)

HIN

High side driver logic input (active high)

VCC

Lower section supply voltage

Dead time setting

OP-

Op-amp inverting input

OPOUT

Op-amp output

8GND

Ground

OP+

Op-amp non inverting input

CP+

Comparator input

LVG(1)

Low side driver output

12,13

Not connected

OUT

High side (floating) common voltage

HVG(1)

High side driver output

BOOT

Floating section (bootstrap) supply voltage

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