VND7050AJTR datasheet(29/46 Pages) STMICROELECTRONICS

Part #	VND7050AJTR

Description	Double channel high-side driver with MultiSense analog feedback

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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VND7050AJ

Application information

The value of these resistors is a compromise between the leakage current of

microcontroller and the current required by the HSD I/Os (Input levels compatibility) with

the latch-up limit of microcontroller I/Os.

Equation

VCCpeak/Ilatchup

≤ Rprot ≤ (VOHµC - VIH - VGND) / IIHmax

Calculation example:

For VCCpeak = -150 V; Ilatchup

≥ 20 mA; VOHµC ≥ 4.5 V

7.5

kΩ ≤ Rprot ≤ 140 kΩ.

Recommended values: Rprot = 15

kΩ

4.4

Multisense - analog current sense

Diagnostic information on device and load status are provided by an analog output pin

(MultiSense) delivering the following signals:

•

Current monitor: current mirror of channel output current

•

VCC monitor: voltage propotional to VCC

•

TCASE: voltage propotional to chip temperature

Those signals are routed through an analog multiplexer which is configured and controlled

by means of SELx and SEn pins, according to the address map in MultiSense multiplexer

addressing Table.

Figure 37: MultiSense and diagnostic – block diagram

DocID027396 Rev 1

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