LinkSwitch�-PH single-stage PFC, primary-side constant current control and TRIAC dimming/non-dimming options dramatically simplifies implementation of LED drivers requiring long lifetime, high efficiency, PF >0.9, and TRIAC dimming capability (LNK403-410). The single-stage combined power factor and constant-current controller eliminates a switching stage and the electrolytic bulk capacitor. The advanced primary-side control used by the LinkSwitch-PH device provides accurate constant current control while eliminating the need for an optocoupler and current sensing circuits. LinkSwitch-PH incorporates a 725V power FET, a continuous mode PWM controller, a high-voltage switched current source for self-biasing, frequency jittering, protection circuitry including cycle-by-cycle current limit and hysteretic thermal shutdown. Meets high voltage creepage requirement between DRAIN and all other signal pins both on PCB and at package. Typically used in off-line LED driver applications.
- Minimum output power of 18W at CBP = 10µF and 31W at CBP = 100µF (85-132VAC, RV = 2Mohm)
- Dramatically simplifies off-line LED drivers, EcoSmart� energy efficient
- Accurate and consistent performance, advanced protection and safety features
- Auto-restart for short-circuit protection, open circuit fault detection mode
- Single-stage combination of power factor correction and accurate constant-current (CC) output
- Simple primary-side PWM dimming interface, universal input voltage range
- Single-stage PFC combined with output CC control
- Greatly increases efficiency, >90% achievable, reduces component count, no current sense resistors
- Low standby power remote ON/OFF feature (<50mW at 230VAC)
- Compensates for transformer inductance variations, compensates for line input voltage variation
Other details
| Brand |
POWER INTEGRATIONS |
| Part Number |
LNK420EG |
| Quantity |
Each |
| Technical Data Sheet EN |
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