15W LED downlight driver uses active damping for flicker-free dimming
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Linkswitch-PH downlight driver
Power Integrations 15W PAR38 LED downlight driver for high-voltage integrated circuits, the Linkswitch-PH, allows flicker-free dimming and is 85 per cent efficient.
The downlight driver uses active damping with bleeding circuitry, which, according to the company, is more efficient and ensures longer life than using an electrolytic bulk capacitor.
The Linkswitch-PH also meets all PFC and harmonic content rules.
Finally, it is compatible with existing home dimmers.
This document from Power Integrations is an engineering report describing a non-isolated LED driver (power supply) utilising a LNK458KG from the Linkswitch-PL series of devices.
The Linkswitch-PH has been developed to cost-effectively design a single-stage power-factor-corrected LED driver with primary-side constant-current control.
This design idea presents the schematic for a CV/CC power supply for LED driver applications using the Linkswitch-II LNK605DG.
The power supply shown in this design idea uses a Linkswitch-TN device in a boost converter configuration to deliver a constant current of 20mA from a single positive voltage of 554VDC.
This design idea from Power Integrations provides the schematic for a universal input, 10.5V, 350mA CV/CC power supply using the Linkswitch-II LNK605DG (U1) in a flyback configuration, useful for LED driver applications.