Welcome Here  Shenzhen Mingjiada Electronics Co., Ltd.

Shenzhen Mingjiada Electronics Co., Ltd. supplies and acquires Automotive TPS929121AQPWPRQ1 12-channel Automotive 40V High Side LED Driver with FlexWire Interface

Device Description

The TPS929121AQPWPRQ1 is a 12-channel, 40 V high-side LED driver with 8-bit output current and 12-bit PWM duty cycle control. The device meets a variety of regulation requirements with open LED, short to ground, and single LED short circuit diagnostics. A configurable watchdog also automatically sets a fail-safe state when the MCU is disconnected, and the TPS929121-Q1 offers flexibility for different application scenarios via a programmable EEPROM.

Features

AEC-Q100 certified for automotive applications:

Temperature Class 1: -40°C to +125°C, TA

12-channel precision high-side current output:

Supply voltage 4.5 V to 40 V

Channel currents up to 75 mA set via resistors

2-bit global, 6-bit independent current setting

High current accuracy < ±5% at 5 mA to 75 mA

High current accuracy < ±10 at 1 mA

500 mV low dropout at 50 mA

12-bit independent PWM dimming

Programmable PWM frequency up to 20 kHz

Linear and exponential dimming methods

FlexWire control interface

Clock frequencies up to 1-MHz

Up to 16 devices on one FlexWire bus

Up to 8 bytes of data per frame

5-V LDO output to power CAN transceivers

Diagnostics and protection

Programmable fail-safe status

Open LED detection

LED short-circuit detection

Single LED Short Circuit Diagnostics

Programmable low power detection

Open-drain ERR for fault indication

Watchdog and CRC for FlexWire Interface

8-bit ADC for pin voltage measurement

Over-temperature protection

Applications

Automotive exterior rear lights

Automotive exterior headlights

Automotive interior ambient light

Automotive dashboard displays

Typical Application Schematic

Summary

As automotive lighting demands more and more animation, LEDs must be controlled independently. Therefore, LED drivers with digital interfaces are critical to effectively drive pixel-controlled lighting applications. In exterior lighting, multiple lamp functions are often located on different PCB boards with off-board wires connected to each other. Conventional single-ended interfaces are difficult to meet the stringent EMC requirements. By using the industry-standard CAN physical layer, the TPS929121-Q1's UART-based FlexWire interface makes it easy to achieve long-distance off-board communication without compromising EMC.

Company home page: www.hkmjd.com