TPS61196-Q1
- 8-V to 30-V Input Voltage
- Up to 120-V Output Voltage
- 100-KHz to 800-kHz Programmable Switching Frequency
- Adaptive Boost Output for LED Voltages
- Six Current Sinks, 200-mA Continuous Output, 400-mA Pulse Output for Each String
- ±1.5% Current Matching Between Strings
- High Precision PWM Dimming Resolution up to 5000:1
- Programmable OVP Threshold
- Programmable Input UVLO Threshold
- Adjustable Soft-Start Time
- Built-in LED Open and Short Protection
- Built-in Schottky Diode Open and Short Protection
- Built-in ISET Short Protection
- Built-in IFB Short Protection
- Thermal Shutdown
The TPS61196-Q1 provides a highly integrated solution for automotive LCD backlighting with an independent PWM dimming function for each string. This device is a current mode boost controller driving up to six WLED strings with multiple LEDs in series. Each string has an independent current regulator providing a LED current adjustable from 50 mA to 400 mA within ±1.5% matching accuracy. The minimal voltage at the current sink is programmable in the range of 0.3 V to 1 V to fit with different LED current settings. The input voltage range for the device is from 8 V to 30 V.
The TPS61196-Q1 adjusts the boost controller’s output voltage automatically to provide only the voltage required by the LED string with the largest forward voltage drop plus the minimum required voltage at that string’s IFB pin, thereby optimizing driver efficiency. Its switching frequency is programmed by an external resistor from 100 kHz to 800 kHz.
The TPS61196-Q1 supports direct PWM brightness dimming. Each string has an independent PWM control input. During the PWM dimming, the LED current is turned on or turned off at the frequency and duty cycle which are determined by the external PWM signal. The PWM frequency ranges from 90 Hz to 22 kHz.
The TPS61196-Q1 integrates overcurrent protection, output short-circuit protection, ISET short-to-ground protection, diode open and short protection, LED open and short protection, and overtemperature shutdown circuit. In addition, the TPS61196-Q1 can detect the IFB pin short to ground to protect the LED string. The device also provides programmable input undervoltage lockout threshold and output overvoltage protection threshold.
技術資料
| 種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
|---|---|---|---|---|---|---|
| * | データシート | TPS61196-Q1 6-String 400-mA WLED Driver with Independent PWM Dimming For Each String データシート | PDF | HTML | 2015年 3月 26日 | ||
| アプリケーション・ノート | Some Guidelines and Tips for the LED Driver Application | 2019年 8月 14日 | ||||
| ホワイト・ペーパー | Powering automotive displays to create interactive driving experiences | 2017年 12月 21日 | ||||
| アプリケーション・ノート | PCB Layout Guideline for Automotive LED Drivers | 2017年 4月 7日 |
設計および開発
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TPS61196EVM-600 — WLED ドライバ・ストリング評価モジュール
The Texas Instruments TPS61196EVM-600 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS61196 , which are multi-channel WLED drivers providing highly integrated solutions for LCD TV backlight. The EVM is designed to operate from an input voltage source ranging (...)
PSPICE-FOR-TI — TI Design / シミュレーション・ツール向け PSpice®
設計とシミュレーション向けの環境である PSpice for TI (...)
| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| HTSSOP (PWP) | 28 | Ultra Librarian |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 使用原材料
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点
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