DC-DC Bidirectional Synchronous Buck-Boost LED Driver 35V/45V/65V Input and Output QFN32L Ultra-Small Package

PC1621

DC-DC Bidirectional Synchronous Buck-Boost LED Driver 35V/45V/65V Input and Output QFN32L Ultra-Small Package [Copy link]

Overview:

The PC9248 is a bidirectional buck-boost controller suitable for driving silicon (Si) MOSFETs or gallium nitride (GaN) power transistors in high-efficiency power converters. It supports wide input and output ranges up to 45V and can seamlessly transition between buck, buck-boost, and boost modes. The PC9248 integrates high-side and low-side gate drivers and provides UVLO protection for both drive rails. It also supports non-synchronous buck operation. It provides programmable input current limit and precise LED current regulation. LED open and short detection features protect the device from external fault conditions.

The PC9248 supports an ultra-wide switching frequency range of 50KHz to 3MHz and integrates spread spectrum (FSS) for EMI optimization. It also features external compensation, programmable soft-start and fault reporting.

PC9248 is available in 32-pin QFN package

characteristic

Wide input voltage range: 4V to 45V, wide output voltage range: 2V to 45V

Power conversion efficiency up to 98%

Ultra-wide switching frequency range: 50kHZ to 3MHz

Programmable input and output current limit

Supports 5V drive voltage for Si FET or GaN FET

High LED current accuracy (±3%)

Supports PWM dimming (2000:1) and analog dimming

Driver power rail UVLO protection

Spread Spectrum (FSS)

External compensation with user programmable soft-start

Integrated high-precision (±1%) 1.8V reference voltage source

LED open circuit and LED short circuit protection

Digital state machine for diagnostics and fault reporting

QFN-32L package

2 Applications

High Power LED Driver

Vehicle headlights/taillights

Consumer electronics, industrial and automotive