LLC with Surge Enhancement



The HR1001C is an enhanced LLC controller that provides adaptive dead-time adjustment (ADTA) and capacitive mode protection (CMP) features, as well as functional improvements on surge performance. ADTA 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. ADTA features easier design, lower EMI, and higher efficiency. The HR1001C 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 HR1001C 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 HR1001C enters a controlled burst mode at light load to minimize power consumption and tighten the output regulation. Full protection features include two-level over-current protection (OCP) with external latch shutdown, auto-recovery, brown-in and brown-out, capacitive mode protection (CMP), and over-temperature protection (OTP), improving converter design safety with minimal extra components.


  • Over-Current Protection (OCP) with Programmable Delay for Enhanced Surge Performance
  • 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 Integrated Bootstrap Diode with a High-Accuracy Oscillator of High dV/dt Immunity
  • Operates up to 600kHz
  • Two-Level Over-Current Protection (OCP): Frequency Shift and Latched Shutdown with Programmable Duration Time
  • Latched 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


  • Vref (V)2
  • 最小输入电压8.9
  • Vin (max) (V)15.5
  • Iop (mA)3
  • Iq (mA)1.2
  • fsw (max) (kHz)600
  • Vbr (V)618
  • Vfb (V)2
  • Typical Pmax (W)600
  • Capacitive Mode Protection
  • Adaptive Dead Time Control
  • High-Voltage Start-UpNo
  • PackageSOIC-16
  • TypeResonant Controller
  • GradeCatalog
  • Control MethodAnalog
  • Power Range DefinedNo