L9908 datasheet(71/153 Pages) STMICROELECTRONICS

No. de pieza	L9908

Descripción Electrónicos	Automotive 3-Phase motor gate driver unit

PDF	153 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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Figure 44. n-th Current Monitor Channel simplified block diagram

Each current monitor channel can be used to measure positive or negative motor current flow through single (DC

Link) or multiple (Single Leg) shunts system configurations.

Figure 45. External Shunts Configurations a) DC-Link, b) 2xSingle Leg + DC-Link, c) 3xSingle Leg

The specific n-th current monitor channel can be disabled by a dedicated SPI bit in the SAFETY_RELEVANT2

Table 68. n-th Current Monitor Channel enable bit

CSn_DIS

Description

n-th current monitor enabled (Default)

n-th current monitor disabled

When disabled, the n-th input current measurement structure is set in low consumption mode, the related DSP

logic is reset and the output stage is set into high impedance state.

The current monitor channel consists of three main parts:

•

A/D Conversion;

•

Digital Signal Processing;

•

D/A Conversion.

L9908

Current monitors

DS13546 - Rev 3

page 71/153

L9908 Datasheet(PDF) 71 Page - STMicroelectronics