HR1001GS-Z

The HR1001 is an enhanced LLC controller which provides new features of adaptive dead time adjustment (ADTA) and capacitive mode protection (CMP). The adaptive dead time adjustment automatically inserts a dead time between the two complimentary gate outputs. This is ensured by keeping the outputs off while sensing the dv/dt current of the half-bridge switching node. The ADTA features easier design, lower EMI, and higher efficiency. HR1001 incorporates anti-capacitive mode protection which prevents potentially destructive capacitive mode switching if the output is shorted or has a severe over load. This feature protects the MOSFET during abnormal condition, making the converter robust. HR1001 has a programmable oscillator that sets both the maximum and minimum switching frequencies. It starts up at a programmed maximum switching frequency and decays until the control loop takes over to prevent excessive inrush current. HR1001 enters a controlled burst-mode operation at light-load to minimize the power consumption and tighten output regulation. HR1001 provides rich protection features which include two-level OCP with external latch shutdown, auto-recovery, brown in/out, CMP, and OTP, improving converter design safety with minimal extra components.

Adaptive dead-time adjustment Capacitive mode protection 50% Duty Cycle, Variable Frequency Control For Resonant Half-Bridge Converter 600V High-Side Gate Driver with Integrated Bootstrap Diode with High dv/dt immunity High-Accuracy Oscillator Operates up to 600kHz Two-Level Over-Current Protection: Frequency-Shift and Latched Shutdown with Programmable Duration Time Latched Disable Input for Easy Protections Remote ON/OFF Control and Brown-Out Protection through the BO Pin Programmable Burst-Mode Operation at Light-Load Non-Linear Soft-Start for Monotonic Output Voltage Rise SOIC-16 package