The TPS92512/HV are 2.5A step-down (buck) current regulators with an integrated MOSFET to drive high current LEDs. Available with 42 V and 60 V (HV) input ranges, these LED drivers operate at a user selected fixed-frequency with peak-current mode control and deliver excellent line and load regulation.
The TPS92512/HV LED drivers feature separate inputs for analog and pulse width modulation (PWM) dimming for no compromise brightness control achieving contrast ratios of greater than 10:1 and greater than 100:1, respectively. The PWM input is compatible with low-voltage logic standards for easy interface to a broad range of microcontrollers. The analog LED current setpoint is adjustable from 0 V to 300 mV using the IADJ input with an external 0 V to 1.8 V signal.
For multi-string applications using two or more TPS92512/HV LED drivers, the internal oscillator can be overdriven by an external clock ensuring all of the converters operate at a common frequency thereby reducing the potential for beat frequencies and simplifying system EMI filtering. An adjustable input under-voltage lockout (UVLO) with hysteresis provides flexibility in setting start/stop voltages based upon supply voltage conditions.
The TPS92512 includes cycle-by-cycle overcurrent protection and thermal shutdown protection. It is available in a 10-pin HVSSOP PowerPAD™ package.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS92512 2.5A Buck LED Driver with Integrated Analog Current Adjust datasheet (Rev. B) | PDF | HTML | 20 Apr 2015 |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 Sep 2020 | ||
| Technical article | Designing an IoT modular light – part 2 | PDF | HTML | 24 Jun 2016 | |
| Technical article | Designing an IoT modular light | PDF | HTML | 17 Jun 2016 | |
| Technical article | Driving LEDs with both analog and PWM dimming | PDF | HTML | 13 Oct 2015 | |
| Technical article | Driving LEDs in battery-powered portable projectors | PDF | HTML | 25 Aug 2015 | |
| EVM User's guide | TPS92512EVM-001 High-Current Buck Regulator With Analog and PWM Dimming for Hi (Rev. A) | 14 Jul 2015 |
For additional terms or required resources, click any title below to view the detail page where available.
The TPS92512EVM is designed to accept an input voltage range of 12V to 60V and drive high current LED stacks at up to 1.5A while providing a small form factor. The LED stack can be between 9V and 24V depending on the input voltage range. The circuit can be dimmed using an analog current adjust (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
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