Packaging information
| Package | Pins HTSSOP (PWP) | 24 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 2,000 | LARGE T&R |
Features for the TPS929120-Q1
- AEC-Q100-qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- 12-Channel precision high-side current output:
- Supply voltage 4.5 V to 40 V
- Up to 75 mA channel current set by resistor
- 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
- Low voltage drop 500 mV at 50 mA
- 12-Bit independent PWM dimming
- Programmable PWM frequency up to 20 kHz
- Linear and exponential dimming method
- FlexWire control interface
- Up to 1-MHz clock frequency
- Maximum 16 devices on one FlexWire bus
- Up to 8 bytes data transaction in one frame
- 5-V LDO output to supply CAN transceiver
- Diagnostic and protection:
- Programmable fail-safe state
- LED open-circuit detection
- LED short-circuit detection
- Single-LED short-circuit diagnostic
- Programmable low-supply detection
- Open-drain ERR for fault indication
- Watchdog and CRC for FlexWire interface
- 8-Bit ADC for pin voltage measurement
- Overtemperature protection
Description for the TPS929120-Q1
With increasing demand for animation in automotive lighting, LEDs must be controlled independently. Therefore, LED drivers with digital interfaces are essential to effectively drive pixel-controlled lighting applications. In exterior lighting, multiple lamp functions are typically 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 TPS929120-Q1 easily accomplishes long distance off-board communication without impacting EMC.
The TPS929120-Q1 is a 12-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 also automatically sets fail-safe states when the MCU connection is lost, and, with programmable EEPROM, TPS929120-Q1 can flexibly be set for different application scenarios.