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HiperLCS-2 is a high efficiency, off-line LLC Switcher IC Chipset.  It consists of:

  • HiperLCS2-HB, a Half-bridge Power Device with Integrated 600 V FREDFETs, and
  • HiperLCS2-SR, a Safety Isolation Device with Synchronous Rectification and FluxLink Feedback

Note: HiperLCS-2 can easily pair with the HiperPFS-5 PFC IC.


Product Details


The HiperLCS™-2 family of IC chipsets dramatically simplifies the design and manufacture of LLC resonant power converters, particularly those requiring high efficiency and/or compact size and delivering up to 220 W continuous output power with no heat sink. The HiperLCS2-HB (LCS72xxC) primary-side devices incorporate 600 V FREDFET in a half bridge arrangement with control, level shifting, drive and self-powered start-up. The HiperLCS2-SR (LSR2000C) master controller device provides reinforced isolated feedback, output sensing and SR management.

HiperLCS-2 family devices incorporate multiple protection features including: line over and undervoltage protection, output overvoltage and over-temperature shutdown. Device fault response options support common combinations of latching and auto-restart behaviors required by applications such as chargers,

Product Highlights

Highly Integrated, Compact Footprint

  • Up to 98.1% efficiency
  • Very low component count and small footprint package
  • Eliminates heatsink up to 220 W continuous
  • Self-powered start-up
  • 600 V FREDFET, rugged fast recovery body diode, current sensing
  • HB Auto dead-time and hard switch detect
  • Selectable center frequency (90, 120, 180, 240 kHz)
  • Secondary-side sensing and feedback control with fast transient response
  • Synchronous rectification driver
  • Integrated FluxLink™, HIPOT-isolated control link

EcoSmart™ – Energy Efficient

  • As low as 41 mW no-load including line sense
  • Output always in regulation, 0-100% load step
  • Easily meets all global energy efficiency regulations

Advanced Protection / Safety Features

  • HB and SR shoot-through protection
  • Power-up pin open/short check
  • System short-circuit, thermal, HB OCP, FB open, fast input line UV/OV and PMAX protection

Optional Features

  • Auto-restart or latching fault response for output OVP/UVP
  • Latching or hysteretic primary over-temperature protection
  • External fault detect and remote on/off
  • Inrush-relay drive output pin
  • Provides start-up bias for PFC stage

Full Safety and Regulatory Compliance

  • Reinforced isolation, isolation voltage >4000 VAC
  • UL1577, CQC and TUV (EN62368-1) safety approved


  • High efficiency power supplies up to 220 W continuous
  • Consumer electronics − TV, PC, e-bike and tool chargers


Output Power (Max) - Peak, 380V 120.00 W
Output Power (Max) - Continuous, 380V 80.00 W
Breakdown Voltage 600 V
Voltage - Output (Min) 5.00 V
Voltage Input (Max, DC) 440.00V
Voltage Input (Min, DC) 345.00V
Auto-Restart & Overvoltage Response Auto-restart
IC Package InSOP-24C
Internal Switch Yes
Temperature - Operating (Min) -40 °C
Temperature - Operating (Max) 150 °C
Protection Features
Input Undervoltage
Open SR FET Detection
Output Overload
Output Overvoltage
Output Short Circuit
Output Profile CV
Topology LLC Half Bridge
Product Sub-Type PMIC
MSL Rating 3