High-Performance Digital PFC+LLC Combo Controller

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Product Description

The HR1200 integrates a digital PFC controller and a half-bridge resonant controller into a single chip. It uses very low power at no-load or ultra-light load, making it compliant with Energy Using Product Directive (EuP) Lot 6 and Code of Conduct Version 5 Tier 2 specifications. The PFC of the HR1200 employs a patented average current control scheme, which can operate in CCM and DCM multi-mode according to the instantaneous condition of the input voltage and output load. The IC exhibits excellent efficiency and high PF at light load. When operating in CCM, the controller can be used in applications up to 500W with minimal board size limitations. The performance of the PFC can be optimized by programming multiple parameters through an I2C GUI. Programming is completed either by the factory or by the customer using a detailed user guide. The half-bridge LLC converter achieves high efficiency with zero-voltage switching (ZVS). The HR1200 implements an adaptive dead-time adjustment (ADTA) function, so the LLC converter can achieve easily ZVS from heavy load to light load. In addition, the HR1200 can prevent the LLC converter from operating in capacitive mode, making it more robust and easier to design. The HR1200 integrates a high-voltage (HV) current source inside the IC for start-up, eliminating the traditional start-up resistor or external circuit. When the AC input is removed, the HV current source functions as an X-cap discharger, eliminating the need for a resistor for

Product Features

General System Features

  • Meets EuP Lot 6 and COC Version 5 Tier 2 Specifications
  • HV Current Source for Start-Up
  • Smart X-Cap Discharger
  • Standard I2C Interface
  • 1k EEPROM to Store Parameters
  • User-Friendly GUI for Digital PFC

PFC Controller

  • High Efficiency from Light Load to Full Load by CCM/DCM Multi-Mode Control
  • High PF Due to Patented Input Capacitor Current Compensation
  • Programmable Frequency Jittering
  • Programmable Brown-In and Brown-Out
  • Programmable Soft Start
  • Cycle-by-Cycle Current Limit
  • Open-Loop Protection

LLC Controller

  • 600V High-Side Gate Driver with Integrated Bootstrap Diode and High dv/dt Immunity
  • Adaptive Dead-Time Adjustment of HB LLC with Minimum and Maximum Limit
  • Burst Mode Switching
  • Safe Start-Up in Case of System Fault
  • Two-Level Over-Current Protection (OCP)
  • Latch Shutdown Protection
  • Over-Temperature Protection (OTP)
  • Capacitive Mode Protection


  • TypePFC+LLC Controller
  • LLC ControlAnalog
  • PFC Control ModeDigital CCM/DCM
  • TopologyPFC + LLC
  • High-Voltage Start-UpYes
  • GradeCatalog
  • PackageSOIC-28, TSSOP28

HR1200 Evaluation Kit High-Performance Digital PFC + LLC Combo Controller

The EVKT-1200 is an evaluation kit for the HR1200. A 240W evaluation board is designed with high
power factor (PF) at light load (>0.95 at 20% load). The particular benefits for the board are the very
low no-load power consumption (<150mW) and very high light-load efficiency (>90% at 10% load),
which meets Energy using Product Directive (EuP) Lot 6 and Code of Conduct Version 5 Tier 2. These
features are suitable to the application of PC, ATX power, notebook adapter, gaming and TV power
supply. With the programming dongle and GUI software, circuit configurations of the digital PFC part
can be easily customized which greatly increases design flexibility.

$300.00 + tax

Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.