Texas Instruments Debuts TPS92075 Controller, TPS92560 Lighting Driver
Texas Instruments announced the TPS92075 controller and TPS92560 lighting driver. According to TI, the TPS92075 is the industry’s smallest off-line, phase-dimmable, constant-current lighting controller. The TPS92560 simplifies the retrofit of a variety of LED bulbs, including E14, GU10, A19, PAR20/30/38, MR16 and AR111. The TPS92075 controller and TPS92560 driver reduce component count and solution size while improving compatibility with legacy lighting controls.
The TPS92560 and TPS92075 are available in volume now. The TPS92075 is offered in a 10-pin PowerPad MSOP package. The TPS92560 is priced at $0.72 each in 1,000-unit quantities. The TPS92075 is offered in an 8-pin SOIC package, and a small 6-pin TSOT package. It will be available in March, and is priced at $0.75.
The TPS92075 is designed for phase-dimmable, offline AC/DC LED lamp and downlight applications. It features power factor correction above 0.9, and delivers smooth, flicker-free dimming when used with conventional wall dimmers. The TPS92560 is ideal for low-voltage AC or low-voltage DC LED lamp applications such as MR16 and AR111. It uses a proprietary input current control method, which improves compatibility with electronic transformers.
TI TPS92560 Simple LED Driver Features
- Controlled peak input current to prevent over-stressing of the electronic transformer
- Allows either step-up or step-up/down operation
- Compatible to generic electronic transformers
- Compatible to magnetic transformers and DC power supplies
- Integrated active low-side input rectifiers
- Compact and simple circuit
- >85% efficiency (12VDC input)
- Power factor > 0.9 (full load with AC input)
- Hysteretic control scheme
- Output over-voltage protection
- Over-temperature shutdown
- 10-pin mini SOIC package with exposed pad
TI TPS92075 Non-isolated, Phase Dimmable, Buck PFC LED Driver Features
- Controlled reference derived PFC
- Integrated digital phase-angle decoder
- Digital 50/60 Hz synchronization
- Phase-symmetry balancing
- Constant LED current operation
- Fast start-up
- Dimming implemented via analog reference control
- Smooth dimming transitions
- Overvoltage protection
- Feedback short-circuit protection
- Leading and trailing edge dimmer compatibility
- Low BOM cost and small PCB footprint
- Patent pending digital architecture
- 8-pin SOIC available, 6-pin TSOT coming soon
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