High Voltage, High Brightness LED Drivers

IXYS Integrated Circuits Division High Voltage LED Drivers

IX9907: High Voltage, Dimmable LED Driver with PFC Control (top)
	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

IX9908: High Voltage, Dimmable LED Driver with PFC Control (top)
	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

CPC9909: High Efficiency, Off-Line, High Brightness LED Driver (top)
	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 Contact one of our Authorized Distributors
Typical Application Circuit

MXHV9910: Off-Line High Brightness LED Driver (top)
	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 Contact one of our Authorized Distributors
Typical Application Circuit

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