VNQ6040STR-E View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

VNQ6040STR-E

Quad channel high-side driver

STMicroelectronics 

Functional description

VNQ6040S-E

2.1.4

2.1.5

2.1.6

2.1.7

Standby mode

The device enters Standby mode under three conditions:

• If it is in Fail Safe mode and the SPI sends the goto standby sequence:

– In a first communication set UNLOCK = 1

In the consecutive communication set STBY = 1 and EN = 0

– This mechanism avoids entering the Standby mode unintentionally.

• If it is in Normal mode and the SPI sends the goto standby sequence:

– In a first communication set UNLOCK = 1

In the consecutive communication set STBY = 1 and EN = 0

– This mechanism avoids entering the Standby mode unintentionally.

• If it is in Sleep mode 2 and one input INX is set to one.

The output stages are according to INX settings, the current from VDD is nearly 0.The SPI is

inactive and all registers are frozen to the last state. The diagnostics is not available.

Standby mode can be left with 3 conditions:

• If VDD falls below VDDR, the device enters Reset mode.

• If CSN is low for t > tstdby_out, the device wakes up. As EN has been set to 0, the device

enters Fail Safe mode and recovers full functionality with command of the outputs and

diagnostics.

• If all direct inputs INX are 0, the device enters Sleep Mode 2 resulting in minimal supply

current from VCC and VDD.

Sleep mode 1

The device enters Sleep mode 1, if it is in Reset mode and if all inputs INX are 0.

All outputs are off, the current from VDD is nearly 0, and the current from VCC is reduced to

ISoff. The SPI is inactive and all registers are cleared. The diagnostics is not available.

Sleep mode 1 can be left with 2 conditions:

• If VDD rises above VDDR, the device enters Fail Safe mode.

• If one of the inputs INX is set to 1, the device enters Reset mode.

Sleep mode 2

The device enters Sleep mode 2, if it is in Standby mode and if all inputs INX are 0.

All outputs are off, the current from VDD is nearly 0, and the current from VCC is reduced to

ISoff. The SPI is inactive and all registers are frozen to the last state. The diagnostics is not

available.

Sleep mode 2 can be left with 3 conditions:

• If VDD falls below VDDR, the device enters Reset mode.

• If CSN is low for t > tstdby_out, the device enters Fail Safe mode.

• If one of the inputs INX is set to 1, the device enters Standby mode.

Battery undervoltage mode

If the battery supply voltage VCC falls below the undervoltage shutdown threshold VUSD

while VDD remains above the reset threshold VDDR, the device enters Battery undervoltage

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DocID18061 Rev 11

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