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Shenzhen Mingjiada Electronics Co., Ltd. supplies Automotive LED Driver TPS92530QPKDRQ1 3-channel, Constant Current, Constant Voltage Synchronous Buck LED Driver compliant with AEC-Q100 for automotive applications.

Description of TPS92530QPKDRQ1

The TPS92530QPKDRQ1 is a monolithic 3-channel synchronous step-down LED driver with a wide operating input voltage range of 4.5V to 65V that can independently power three strings of LEDs connected in a series.The TPS92530QPKDRQ1 implements an adaptive on-time averaging current-mode control function and is designed to produce constant voltage or constant current outputs. The adaptive on-time control provides a nearly constant switching frequency with settings from 100kHz to 1.2MHz. In constant-current mode, the device is compatible with shunt FET dimming technology and dynamic beam headlamps based on LED matrix managers. In constant voltage mode, the adaptive on-time control feature supports high bandwidth operation and provides fast transient response. Inductor current sensing and closed-loop feedback provide better than ±4% accuracy over a wide range of input voltage, output voltage, and ambient temperature. In constant-current mode, the high-performance LED driver can individually modulate the LED current using analogue dimming or PWM dimming techniques. A linear analogue dimming response greater than 16:1 can be achieved by programming the 10-bit reference (CHxREF) via SPI. PWM dimming of the LED current is achieved by directly modulating the corresponding UDIM input pin with the desired duty cycle or by enabling the internal PWM generator circuitry. By comparing the 10-bit PWM

characteristics

- Wide input voltage range of 4.5V to 65V

- Configurable constant voltage and constant current operation

- Continuous output current up to 2A

- 4% regulation accuracy (voltage and current modes)

- Adaptive on-time average current control

- Programmable switching frequency range of 100kHz to 1.2MHz

- Advanced Dimming Operation

- 10-bit precision analogue dimming

- 10-bit precision internal PWM dimming

- Supports external PWM dimming inputs

- Optimised for external shunt dimming including LED matrix managers

- Switch cycle-by-cycle overcurrent protection

- Switch thermal protection

- Serial Peripheral Interface (SPI)

- Configurable analogue reference, switching frequency and PWM dimming duty cycle

- Fault monitoring and reporting

- Supports limp home (LH) and standalone mode operation

Applications

- Automotive headlighting and adaptive LED driver modules

Simplified Schematic

Interested parties, please call Mr Chen:

Tel: +86 13410018555

Email: sales@hkmjd.com

Home: www.hkmjd.com