onsemi NCL3038x CC/CV single stage PSR
The NCL3038x is a power factor corrected flyback controller targeting isolated constant current LED drivers
The NCL3038x is a power factor corrected flyback controller targeting isolated constant current LED drivers. The controller operates in a quasi-resonant mode to provide high efficiency. Thanks to a novel control method, the device is able to tightly regulate a constant LED current from the primary side. This removes the need for secondary side feedback circuitry, its biasing and for an optocoupler. The device is highly integrated with a minimum number of external components. A robust suite of safety protection is built in to simplify the design.
Key features
- Integrated HV start up current source
- Digital PSR CC loop control
- Digital PSR CV loop control
- Digital PFC loop algorithm
Additional features
Features:
- Integrated HV start up current source
- Digital PSR CC loop control
- Digital PSR CV loop control
- Digital PFC loop algorithm
- Valley Lock out and Frequency Foldback
- Secondary Diode and Output Short Protection
- Open and Shorted LED Protection
- VCC Undervoltage and overvoltage protection
Benefits:
- Fast startup, Low standby power & Wide output operation range
- Constant Brightness Regulation - <±2%
- Good start up performance at cold temperature condition
- Over 0.9 PF at half load 230 Vac and Under 10% THD at half load universal input
- High efficiency at wide input and output range
- Avoids overheating in fault condition
- Robust fault handling of common LED system faults
- Robust fault handling
Applications
- Integral LED Bulbs
- Integrated LED Drive Electronics
- LED Light Engines
- LED Driver Power supplies
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