LNK403-409EG/413-419EG: LinkSwitch-PH Family
LinkSwitch-PH dramatically simplifies implementation of LED drivers requiring Power Factors greater than 0.9, TRIAC dimming, and high efficiency. This highly integrated controller introduces a new control technique that provides very high power factor and accurate output current control, and eliminates passive circuitry required for power factor correction, optocoupler and secondary current control circuitry.
Each device incorporates a 725V power MOSFET, a continuous-mode PWM controller, a high voltage switched current source for self biasing, frequency jittering, cycle-by-cycle current limit and hysteretic thermal shutdown circuitry into a monolithic IC.
The LinkSwitch-PH monolithically integrates the 725 V power MOSFET and controller. The controller consists of an oscillator, PWM, 6 V regulator, BYPASS pin programming functions, over-temperature protection, frequency jittering, cycle-by-cycle current limit, leading edge blanking, and charge controller for output CC (constant-current) control.
This design describes a high power factor (PF) TRIAC dimmable LED driver designed to drive a nominal LED string voltage of 28 V at 0.5 A from an input voltage range of 90 VAC to 265 VAC. The LED driver utilizes the LNK406EG from the LinkSwitch-PH family of ICs.
This design describes a high power-factor corrected dimmable LED driver designed to drive 21 V at 0.33 A from an input voltage range of 90 VAC to 265 VAC. The LED driver utilizes the LNK403EG from Power Integrations.Documentation
- Design Example Report 286: 30 W LED Driver Using LinkSwitchTM-PH LNK419EG
- Design Example Report 287: LED Driver Using LinkSwitchTM-PH LNK409EG
- Design Example Report 288: 15 W LED Driver (Non-Dimming) Using LinkSwitchTM-PH LNK417EG with Active Ripple Filter
- Design Example Report 296: Using LinkSwitchTM-PH LNK403EG
- Design Example Report 298: 18 W LED Driver Using LinkSwitchTM-PH LNK419EG
- Design Example Report 314: Using LinkSwitchTM-PH LNK406EG
- Design Example Report 318: 23 W, LED Driver Using LinkSwitchTM-PH LNK419EG
- Application Note AN-49 LinkSwitch-PH Family
- LNK403-09EG/413-19EG
Application Diagram
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