The HR1001BGS is an enhanced LLC controller, which provides new adaptive dead-time adjustment (ADTA) and capacitive mode protection (CMP) features.The adaptive dead-time adjustment inserts a dead time between the two complimentary gate outputs automatically. 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.The HR1001BGS incorporates anti-capacitive mode protection, which prevents potentially destructive capacitive mode switching if the output is shorted or has a severe overload. This feature protects the MOSFET during abnormal conditions, making the converter robust.The HR1001BGS 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.The HR1001BGS enters a controlled burst mode at light load to minimize the power consumption and tighten output regulation.The HR1001BGS provides rich protection features, including two-level OCP with external latch shutdown, auto-recovery, brown in/out, CMP, and OTP, improving converter design safety with minimal extra components. 9icnet Electronics is an authorized Monolithic Power Systems distributor.
Feature
- 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 Protection
- 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
