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IXYS Integrated Circuits Division
High Voltage LED Drivers
 
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IX9907:
High Voltage, Dimmable LED Driver with PFC Control (top)
 
IX9907 Image
  • Internal 650V, 2-Ohm power MOSFET
  • Single stage, primary control with PFC and dimming features
  • >90% efficiency
  • Power factor >98%
  • Wide operating voltage range
  • Digital soft-start
  • Foldback correction and cycle-by-cycle peak current control
  • Output over-current and over-voltage protection
  • Over-temperature protection
  • Under-voltage lockout
 

IX9907 is a quasi-resonant controller optimized for phase-cut dimmable, off-line LED applications. Precise PWM generation supports phase-cut dimming and power factor correction.

IX9907 incorporates an internal 650V power MOSFET. It has a wide voltage operating range and low power consumption. Multiple safety features ensure full system protection under fault conditions. With its strong feature set and low cost, the IX9907 is an excellent choice for quasi-resonant, off-line flyback LED bulb designs.

IX9907 Data Sheet - Rev 2 : High Voltage, Dimmable LED Driver with PFC Control
Application Note: AN-305: IX9907 Design Considerations

 
Typical Application Circuit  
IX9907 Application Schematic  
IX9908:
High Voltage, Dimmable LED Driver with PFC Control (top)
 
IX9908 Picture
  • Single Stage, Primary Control with PFC and Dimming Features
  • >90% Efficiency
  • Power Factor >98%
  • Wide Operating Voltage Range: Up to 600V
  • Digital Soft Start
  • Cycle-by-Cycle Peak Current Control
 

IX9908 is a quasi-resonant controller optimized for phase-cut dimmable, off-line LED applications. Precise PWM generation supports phase-cut dimming and power factor correction.

IX9908 features a wide operating range, up to 600V, and low power consumption. Multiple safety features ensure full system protection in failure situations. The IX9908, with its strong feature set and low cost, is an excellent choice for quasi-resonant flyback LED bulb designs.

IX9908 Data Sheet - Rev 2 : High Voltage, Dimmable LED Driver with PFC Control
Application Note: AN-302: IX9908 Design Considerations
Application Note: AN-303: IX9908 Design Considerations (European Voltage Version)
Application Note: AN-304: IX9908 Component Calculator
IX9908-UG - Rev 1: IX9908 Evaluation Board User's Guide

 
Typical Application Circuit  
IX9908 Application Schematic  
CPC9909:
High Efficiency, Off-Line, High Brightness LED Driver (top)
 
CPC9909 Picture
  • 8V to 550V Input Voltage Range
  • >90% Efficiency
  • Stable Operation at >50% Duty Cycle
  • Drives Multiple LEDs in Series/Parallel Configurations
  • Regulated LED Current
  • Linear or PWM Brightness Control Inputs
  • Resistor-Programmable Minimum Off-Time
  • Buck or Boost Configuration
 

CPC9909 is a low cost, high-efficiency, offline, high-brightness (HB) LED driver manufactured using our high voltage BCDMOS on SOI process. This driver has an internal regulator that allows it to operate from 8VDC to 550VDC . This wide input operating voltage range enables the driver to be used in a broad range of HB LED applications.

CPC9909 features pulse frequency modulation (PFM) with a constant peak-current control scheme. This regulation scheme is inherently stable, allowing the driver to be operated above 50% duty cycle without open loop instability or sub-harmonic oscillations. LED dimming can be implemented by applying a small DC voltage to the LD pin, or by applying a low frequency PWM signal to the PWMD pin.

CPC9909 Data Sheet - Rev 5 : High Efficiency, Off-Line, High Brightness LED Driver
UG-CPC9909EB: CPC9909 Evaluation Board User's Guide
Application Note: AN-301: CPC9909 Design Considerations

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Typical Application Circuit  
CPC9909 Typical Application Schematic  
MXHV9910:
Off-Line High Brightness LED Driver
(top)
 
MXHV9910 Picture
  • 8V to 450V Input Voltage Range
  • >90% Efficiency
  • Drives Multiple LEDs in Series/Parallel Combinations
  • Regulated LED Drive Current
  • Linear or PWM Brightness Control
  • Resistor-Programmable Oscillator Frequency
  • SOIC-8 and SOIC-8 EP (Exposed Thermal Pad) Packages
 

MXHV9910 is a low-cost, high-brightness (HB) LED driver manufactured using our high-voltage BCDMOS on SOI process. The driver has internal circuitry that allows it to operate from a universal AC line or from 8Vdc to 450Vdc. This highly versatile input operating voltage enables this device to be used in a broad range of HB LED applications.

MXHV9910 features a fixed-frequency, peak-current control method, which provides an ideal solution for driving multiple LEDs in series and in parallel. In addition, LED dimming can be implemented by applying a small DC voltage to the LD pin, or by a low-frequency digital PWM signal to the PWMD pin.

MXHV9910 Data Sheet - Rev 4 : Off-Line, High Brightness LED Driver
Application Note: AN-300: MXHV9910 Design Considerations

MXHV9910 265V AC Demo Board User Guide

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Typical Application Circuit

 
MXHV9910 Typical Application Circuit

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