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High-Voltage Resonant Controller IC with PFC for LED Driver

The ICL5101 integrates a half-bridge controller with a PFC stage in a single package. The high level of integration assures a low count of external components, enabling small form factor designs ideal for compact power supplies in lighting applications, such as LED driver.

The PFC stage operates in CrCM and DCM mode, supporting stable operation at low load conditions down to 0.1% of the nominal power. The half-bridge resonant stage – typically in LLC topology – provides high- and low-side gate drive function for discrete MOSFETs rated up to 650 V. Its non-overlap dead time is adaptive from 500 ns ... 1.0 μs.

All operation parameters of the IC are adjustable by simple resistors, this being the ideal choice for cheap and reliable configuration. A comprehensive set of protection features incl. an adjustable external over temperature protection and capacitive load protection ensures the detection of fault conditions to increase the system safety.

Link to Demo Board ICL5101



Summary of Features:


  • Supports AC and DC input
  • Combined PFC and half-bridge IC
  • Integrated high-side gate driver
  • Power Factor Correction > 99%, THD < 10%
  • High efficiency up to 95 %
  • Ultra-fast time to light < 200 ms
  • Supports outdoor use by extended junction temperature range from -40 °C to +125 °C
  • Stable low load operation mode down to 0.1 % of nominal power rating


  • High level of integration resulting in low external component count and cost
  • All operation parameters are adjustable with simple resistors to allow simple configuration
  • Stable low load operation mode
  • Comprehensive protection modes


Target Applications:

  • Indoor and outdoor high-power LED lighting
  • High-bay and low-bay lighting
  • Street Lighting
  • Parking garages and area lighting
  • Office panel lighting
  • Shop lighting



Parametric ICL5101
Topology   PFC +LLC
Type   Controller
Comments   High-voltage resonant controller with PFC and extended dimming range for LED driver
Package   PG-DSO-16
Switching Frequency  min  max 20.0kHz  120.0kHz
Budgetary Price €€/1k   1.04 

Data Sheet

Title Size Date Version
1.7 MB 28 Jan 2016 01_30

Application Notes

Title Size Date Version
1.5 MB 18 Nov 2015 01_10
3.3 MB 28 Oct 2016 01_00
3.2 MB 22 Sep 2015 02_02

Product Brief

Title Size Date Version
305 KB 09 Feb 2015 01_00

Application Brochure

Title Size Date Version
6.9 MB 19 May 2016 01_00
3.3 MB 01 Mar 2016 01_00

Product Selection Guide

Title Size Date Version
22.2 MB 21 Feb 2017 00_00
Sales Product Name ICL5101
Product Status active and preferred
Order online Buy online
Package Name PG-DSO-16
Completely lead free yes
Halogen free yes
RoHS compliant yes
Packing Size 2500
Packing Type TAPE & REEL
Moisture Level 3

PCB Design Data

Title Size Date Version
2 KB 24 Sep 2016 01_00
3 KB 24 Sep 2016 01_00
12 KB 24 Sep 2016 01_00
586 KB 24 Sep 2016 01_00

Evaluation Boards

Board Family Description Status
EVALLEDICL5101E2 LED Driver & Ballast Controller PFC/LLC Constant Current Evaluation Board 130W LED Driver
    active and preferred
    EVALLEDICL5101E1 LED Driver & Ballast Controller, MOSFET PFC/LLC Constant Voltage Evaluation Board 110W LED Driver
    • BSP135
    • ICL5101
    • IPD60R450E6
    • IPP60R125C6
    active and preferred

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    Development Tools

    Title Size Date Version
    1.3 MB 28 Jan 2016 01_20