TPS92830-Q1
- AEC-Q100 Qualified
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C4B
- Wide Voltage Input Range From 4.5 V to 40 V
- 3-Channel High-Side
Current Driving and Sensing
- Channel-Independent Current Setting
- Channel-Independent PWM Inputs
- PWM Dimming via Both PWM Inputs and Power Supply
- Optimized Slew Rate for EMC
- High-Precision LED Driving
- Precision Current Regulation With External N-Channel MOSFET (2.5% Tolerance)
- 20:1 Analog Dimming Profile With Off-Board Bin Resistor Support
- Precision PWM Generator With Full Duty-Cycle Mask (2% Tolerance)
- Open-Drain PWM Output for Synchronization
- Protection and Diagnostics
- Adjustable Output Current Derating for External MOSFET Thermal Protection
- Diagnostics for LED-String Open Circuit or Short Circuit With Auto Recovery
- Diagnostic-Enable With Adjustable Threshold for Low-Voltage Operation
- Fault Bus up to 15 Devices, Configurable As Either One-Fails–All-Fail or Only-Failed-Channel-Off
- Low Quiescent Current in Fault Mode (<0.75 mA per Device)
- Operating Junction Temperature Range: –40°C to 150°C
- TSSOP 28 Package (PW)
With the trend of better lighting homogeneity, high-current LEDs are often used in automotive front and rear lamps with lighting diffusers and light-guides. Meanwhile, in order to meet strict EMC and reliability requirements, linear LED drivers are popular in automotive applications. However, it is a challenge to deliver high current for linear LED drivers with integrated power transistors. The TPS92830-Q1 device is an advanced automotive-grade high-side constant-current linear LED controller for delivering high current using external N-channel MOSFETs. The device has a full set of features for automotive applications and is compatible with a wide selection of N-channel MOSFETs.
Each channel of the TPS92830-Q1 device sets the channel current independently by the sense-resistor value. An internal precision constant-current regulation loop senses the channel current by the voltage across the sense resistor and controls the gate voltage of the N-channel MOSFET accordingly. The device also integrates a two-stage charge pump for low-dropout operation. The charge-pump voltage is high enough to support a wide selection of N-channel MOSFETs. PWM dimming allows multiple
sources for flexibility—internal PWM generator, external PWM inputs, or power supply dimming. Various diagnostics and protection features specially designed for automotive applications help improve system robustness and ease of use. A one-fails–all-fail fault bus supports TPS92830-Q1 operation together with the TPS92630-Q1, TPS92638-Q1, and TPS9261x-Q1 family to fulfill various fault-handling requirements.
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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 | TPS92830-Q1 3-Channel High-Current Linear LED Controller datasheet (Rev. B) | PDF | HTML | 2018/1/16 | ||
| 技術文章 | TI at the Auto Lamp Exhibition 2018 in Shanghai | PDF | HTML | 2018/3/30 | |||
| 白皮書 | LED Drivers for Automotive Exterior Applications (Rev. B) | 2018/3/27 | ||||
| 技術文章 | A wiser choice for automotive lighting | PDF | HTML | 2017/11/29 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
TPS92830EVM — TPS92830-Q1 三通道高電流線性 LED 控制器評估模組 (EVM)
TPS92830-Q1 Unencrypted PSpice Transient Model Package (Rev. B)
TIDA-01374 — 符合 EMC 規範的車用停車燈和尾燈參考設計
TIDA-01375 — 符合 EMC 規範的汽車日間行車燈和位置燈參考設計
TIDA-01376 — 符合 EMC 規範的車用 LED 轉向指示器參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TSSOP (PW) | 28 | 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。