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TPS929240-Q1 Automotive LED and OLED Driver
Texas Instruments' 24-channel FlexWire™ interface driver is designed to address individual control for LED strings
Texas Instruments' TPS929240-Q1 is a 24-channel, 40 V high-side LED driver that controls the 8-bit output current and 12-bit PWM duty cycles. The device meets multiple regulation requirements with LED open-circuit, short-to-ground, and single-LED short-circuit diagnostics. A configurable watchdog automatically sets the FAILSAFE states when the MCU connection is lost. With programmable EEPROM, the driver can flexibly be set for different application scenarios.
With the increasing demand for animation in automotive lighting, LEDs must be controlled independently. LED drivers with digital interfaces are essential to effectively drive pixel-controlled lighting applications. In exterior lighting, multiple lamp functions are located on different PCB boards with off-board wires connected to each other. It is difficult for a traditional single-ended interface to meet the strict EMC requirements. By using an industrial-standard CAN physical layer, the UART-based FlexWire interface of the driver easily achieves long-distance offboard communication without impacting EMC.
- FlexWire control interface:
- Clock frequency: up to 1 MHz
- Max. of 16 devices per FlexWire bus
- Data transaction: up to 24 bytes in one frame
- LDO output: 5 V to supply the CAN transceiver
- Diagnostic and protection:
- Programmable FAILSAFE state
- LED open-circuit detection
- LED short-circuit detection
- Single LED short-circuit diagnostic
- Programmable low-supply detection
- Open-drain ERR for the fault indication
- Watchdog and CRC for the FlexWire interface
- 8-bit ADC for pin-voltage measurements
- Overtemperature protection
- AEC-Q100-qualified for automotive applications:
- Temperature range Grade 1 TA: -40°C to +125°C
- 24-channel precision high-side current output:
- Device supply voltage range: 4.5 V to 40 V
- LED supply voltage range: 4 V to 36 V
- Channel current: up to 100 mA set by a resistor
- 2-bit global and 6-bit independent current setting
- High-current accuracy: <±5% at 5 mA to 100 mA
- Low voltage drop: 750 mV at 100 mA
- 12-bit independent PWM dimming
- Programmable PWM frequency: up to 20 kHz
- Phase-shift PWM dimming
- Linear and exponential dimming method
- Automotive exterior rear lights/headlights, interior ambient lights, and cluster displays
TPS929240-Q1 Automotive LED and OLED Drivers
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
 |  | TPS929240QDCPRQ1 | AUTOMOTIVE 24-CHANNEL 40-V HIGH- | 1870 - Immediate | $7.44 | View Details |
| | TPS929240AQDCPRQ1 | AUTOMOTIVE 24-CHANNEL 40-V HIGH- | 1252 - Immediate | $7.44 | View Details |
Evaluation Board
| Image | Manufacturer Part Number | Description | Outputs and Type | Contents | Utilized IC / Part | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|---|---|
|  | TPS929240EVM | EVAL BOARD FOR TPS929240-Q1 | 24 Non-Isolated Outputs | Board(s), Cable(s) | TPS929240-Q1 | 5 - Immediate | $374.00 | View Details |
France