The HR1001LGS-Z is an enhanced LLC controller that provides new, adaptive, dead-time adjustment (ADTA) and capacitive mode protection (CMP) features. The HR1001LGS-Z is the OCP latch-off version of the HR1001B.ADTA inserts a dead time between the two complimentary gate outputs automatically by keeping the outputs off while sensing the dV/dt current of the half-bridge switching node. ADTA features an easier design, lower EMI, and higher efficiency.The HR1001LGS-Z 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 HR1001LGS-Z 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 HR1001LGS-Z enters controlled burst mode at light loads to minimize the power consumption and tighten output regulation.Full protection features include two-level over-current protection (OCP), external-latch shutdown, brown-in/brown-out, capacitive mode protection (CMP), and over-temperature protection (OTP). 9icnet Electronics is an authorized Monolithic Power Systems distributor.
Feature
- Two-Level Over-Current Protection (OCP): Frequency Shift andLatch-Off Mode
- Adaptive Dead-Time Adjustment (ADTA)
- Capacitive Mode Protection (CMP)
- 50% Duty Cycle, Variable Frequency Control for Resonant Half-Bridge Converter
- 600V High-Side Gate Driver with IntegratedBootstrap Diode with a High-Accuracy Oscillator of High dV/dt Immunity
- Operates up to 600kHz
- Latched to Disable Input for Easy Protection
- Remote On/Off Control and Brown-Out Protection through BO
- Programmable Burst Mode Operation at Light Load
- Non-Linear Soft Start for Monotonic Output Voltage Rise
- Available in a SOIC-16 Package
