10XS3435(2009) 데이터 시트보기 (PDF) - Freescale Semiconductor

부품명

상세내역

제조사

10XS3435
(Rev.:2009)

Quad High Side Switch (Dual 10 mOhm, Dual 35 mOhm)

Freescale Semiconductor 

FUNCTIONAL DESCRIPTION

FUNCTIONAL INTERNAL BLOCK DESCRIPTION

FUNCTIONAL INTERNAL BLOCK DESCRIPTION

MCU

Interface

MC10XS3435 - Functional Block Diagram

Power Supply

MCU Interface & Output Control

SPI Interface

Parallel Control Inputs

PWM Controller

Self-Protected

High-Side

Switches

HS0-HS3

Supply

MCU Interface & Output Control

Self-Protected High-Side Switches

Figure 9. Functional Block Diagram

POWER SUPPLY

The 10XS3412B is designed to operate from 4.0 V to 28 V

on the VPWR pin. Characteristics are provided from 6.0 V to

20 V for the device. The VPWR pin supplies power to internal

regulator, analog, and logic circuit blocks. The VDD supply is

used for Serial Peripheral Interface (SPI) communication in

order to configure and diagnose the device. This IC

architecture provides a low quiescent current sleep mode.

Applying VPWR and VDD to the device will place the device in

the Normal mode. The device will transit to Fail-safe mode in

case of failures on the SPI or/and on VDD voltage.

HIGH SIDE SWITCHES: HS0–HS3

These pins are the high side outputs controlling

automotive lamps located for the front of vehicle, such as

65 W/55 W bulbs and Xenon-HID modules. Those N-channel

MOSFETs with 10 mΩ & 35 mΩ RDS(ON) are self-protected

and present extended diagnostics in order to detect bulb

outage and short-circuit fault condition. The HS output is

actively clamped during turn off of inductive loads and

inductive battery line. When driving DC motor or Solenoid

loads demanding multiple switching, an external

recirculation device must be used to maintain the device in its

Safe Operating Area.

MCU INTERFACE AND OUTPUT CONTROL

In Normal mode, each bulb is controlled directly from the

MCU through SPI. A pulse width modulation control module

allows improvement of lamp lifetime with bulb power

regulation (PWM frequency range from 100 to 400 Hz) and

addressing the dimming application (day running light). An

analog feedback output provides a current proportional to the

load current or the temperature of the board. The SPI is used

to configure and to read the diagnostic status (faults) of high

side outputs. The reported fault conditions are: open-load,

short-circuit to battery, short-circuit to ground (over-current

and severe short-circuit), thermal shut-down, and under/

over-voltage. Thanks to accurate and configurable over-

current detection circuitry and wire-harness optimization, the

vehicle is lighter.

In Fail-safe mode, each lamp is controlled with dedicated

parallel input pins. The device is configured in default mode.

10XS3435

26

Analog Integrated Circuit Device Data

Freescale Semiconductor

Share Link: