TPS92512
- Integrated 200-mΩ High-Side MOSFET
- 4.5-V to 42-V Input Voltage Range
(4.5 V to 60 V for the TPS92512HV) - 0 V to 300 mV Adjustable Voltage Reference
- ±5% LED Current Accuracy
- 100-kHz to 2-MHz Switching Frequency Range
- Dedicated PWM Dimming Input
- Adjustable Undervoltage-Lock-Out
- Overcurrent Protection
- Overtemperature Protection
- MSOP-10 Package with PowerPAD
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.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS92512 2.5A Buck LED Driver with Integrated Analog Current Adjust datasheet (Rev. B) | PDF | HTML | 2015/4/20 | ||
| 白皮書 | Common LED Functions and LED Driver Design Considerations | 2020/9/21 | ||||
| 技術文章 | Designing an IoT modular light – part 2 | PDF | HTML | 2016/6/24 | |||
| 技術文章 | Designing an IoT modular light | PDF | HTML | 2016/6/17 | |||
| 技術文章 | Driving LEDs with both analog and PWM dimming | PDF | HTML | 2015/10/13 | |||
| 技術文章 | Driving LEDs in battery-powered portable projectors | PDF | HTML | 2015/8/25 |
設計與開發
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TPS92512EVM-001 — 具有類比和 PWM 調光的 TPS92512 降壓穩壓器
TPS92512EVM 的設計可接受 12V 至 60V 的輸入電壓範圍，並驅動高達 1.5A 的高電流 LED 堆疊，同時具備小巧的外觀尺寸。視輸入電壓範圍而定，LED 堆疊可介於 9V 和 24V 之間。可以使用類比電流調整功能、PWM 調光功能，或是同時使用這兩者來為此電路調光。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。