VNQ830 데이터 시트보기 (PDF) - STMicroelectronics

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VNQ830

Quad channel high-side driver

STMicroelectronics 

Application information

3

Application information

VNQ830

Figure 24. Application schematic

+5V +5V

+5V

Rprot

STATUS1

VCC1,2

VCC3,4

Rprot

INPUT1

t(s) Rprot

STATUS2

Dld

OUTPUT1

uc Rprot

d μC

Pro Rprot

lete Rprot

so Rprot

- Ob Rprot

INPUT2

STATUS3

INPUT3

STATUS4

INPUT4

uct(s) +5V +5V

OUTPUT2

OUTPUT3

GND1,2

OUTPUT4

GND3,4

VGND

RGND

DGND

te Prod Note:

Obsole 3.1

Channels 3 and 4 have the same internal circuit as channel 1 and 2.

GND protection network against reverse battery

This section provides two solutions for implementing a ground protection network against

reverse battery.

3.1.1

Solution 1: a resistor in the ground line (RGND only)

This can be used with any type of load.

The following show how to dimension the RGND resistor:

1. RGND ≤ 600 mV / 2(IS(on)max)

2. RGND ≥ (-VCC) / (-IGND)

18/28

Doc ID 7390 Rev 5

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