TPS929120AQPWPRQ1

TPS929120AQPWPRQ1 Overview

With the growing demand for animation in automotive lighting, the LEDs must be controlled individually. Therefore, an LED driver with a digital interface is essential to efficiently drive pixel-controlled lighting applications. In exterior lighting, multiple light functions are often located on different PCB boards interconnected with off-board wires. Traditional single-ended interfaces have difficulty meeting stringent EMC requirements. By using the industry-standard CAN physical layer, the TPS929120-Q1's flexible UART-based wire interface enables easy off-board communication over long distances without compromising EMC performance.

The TPS929120-Q1 is a 12-channel 40-V high-side LED driver with 8-bit output current control and 12-bit PWM duty cycle. The device features open-LED, short-to-ground, and single-LED short-circuit diagnostics to meet a variety of regulation requirements. A configurable watchdog also automatically sets a fail-safe state when the MCU connection is lost. With programmable EEPROM, TPS929120-Q1 can be flexibly set for different application scenarios.

With the growing demand for animation in automotive lighting, the LEDs must be controlled individually. Therefore, an LED driver with a digital interface is essential to efficiently drive pixel-controlled lighting applications. In exterior lighting, multiple light functions are often located on different PCB boards interconnected with off-board wires. Traditional single-ended interfaces have difficulty meeting stringent EMC requirements. By using the industry-standard CAN physical layer, the TPS929120-Q1's flexible UART-based wire interface enables easy off-board communication over long distances without compromising EMC performance.

The TPS929120-Q1 is a 12-channel 40-V high-side LED driver with 8-bit output current control and 12-bit PWM duty cycle. The device features open-LED, short-to-ground, and single-LED short-circuit diagnostics to meet a variety of regulation requirements. A configurable watchdog also automatically sets a fail-safe state when the MCU connection is lost. With programmable EEPROM, TPS929120-Q1 can be flexibly set for different application scenarios.

TPS929120AQPWPRQ1 Features

• AEC-Q100 Qualified for Automotive Applications:

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

• Provides functional safety

• Documentation to aid in functional safety system design

• 12-channel precision high-side current output:

• Supply Voltage: 4.5V to 40V

• Resistor-programmed channel current up to 75mA

• 2-bit global, 6-bit individual current settings

• High Current Accuracy: At 5mA to 75mA, Accuracy

• Flexible wire control interface

• Up to 1MHz clock frequency

• Up to 16 devices on one flexible wire bus

• Data transactions up to 8 bytes per frame

• 5V LDO output to power CAN transceiver

• Diagnosis and Protection:

• Programmable fail-safe state

• Open LED detection

• LED short detection

• Single LED short diagnostics

• Programmable Low Power Detection

• Open-drain ERR fault indication

• Watchdog and CRC for flexible wire interface

• 8-bit ADC for pin voltage measurement

• Overheating protection

TPS929120AQPWPRQ1 Applications

• A- lamps
• Refrigeration lighting
• Gallery lighting
• General lighting
• LED headlights
• Amusement Machines
• Other Electronic Devices
• Power source for accessories such as car audios, car navigation systems, and ETC systems
• Auxiliary lights for on-vehicle cameras
• Stage and Studio lighting