Power Integrations' LYTSwitch-7 family is ideal for single-stage, high PF, constant current LED dimmable applications. The family incorporates a high-voltage MOSFET with a variable on-time CrM controller. Extensive protection features with minimum external components provide industry leading power density and functionality. The CrM operation results in low turn-on losses and reduces cost of output diode (slower reverse recovery). LYTSwitch-7 devices are suitable for applications from 4 W to 22 W. LYTSwitch-7 peak current mode operation is suitable for TRIAC applications without the need of an active bleeder.
Design Examples
- DER-539 – A19 bulb, 90-132 VAC input/52 V@120 mA output
- DER-540 – Candle bulb, 90-132 VAC input/52 V@90 mA output
- DER-558 – A19 bulb, 180-265 VAC input/50 V@150 mA output
- DER-568 – A19 bulb, 180-265 VAC input/84 V@120 mA output
- DER-563 – A19 bulb, 180-265 VAC input/52 V@355 mA output
- DER-561- A19 bulb, 90-300 VAC input/60 V@125 mA output
- DER-570 – Ceiling Fixture dual output, 100-305 VAC input/52 V@350 mA output
Features
- Single-stage PFC+ accurate CC output
- ±3% CC regulation in single line input voltage applications
- Power factor >0.9
- High efficiency <85%
- Dimming highlights
- Fast turn-on (<500 ms)
- Low pop-on
- Better than 10:1 dimming ratio
- Highest reliability
- Industries lowest component count dimming solution
- Comprehensive protection features with auto-restart
- Advanced thermal control
Applications
- Indoor commercial and residential lighting
