TPS92642-Q1
- AEC-Q100 qualified for automotive applications
- Grade 1: –40°C to 125°C ambient operating temperature
- Device HBM classification level H1C
- Device CDM classification level C5
- Functional Safety-Capable
- Documentation available to aid functional safety system design
- Input voltage range: 5.5 V to 36 V
- Operation down to 5.15 V after start-up
- Up to 5-A pulsed output current with 4% accuracy
- Adaptive on-time current control
- Low offset high-side current sense amplifier
- Stable with any combination of ceramic, and aluminum capacitors
- Programmable switching frequency from 100 kHz to 2.2 MHz
- Advanced dimming operation
- 1000:1 precision PWM dimming
- 15:1 precision analog dimming
- Internal maximum duty cycle limit
- Cycle-by-cycle switch overcurrent protection
- Open-drain fault indicator output
- LED short circuit, open circuit and cable harness fault indication
- Thermal shutdown protection
The TPS92642-Q1 is a monolithic, synchronous Buck LED driver with a wide 5.5-V to 36-V operating input voltage range and 40-V tolerance that supports load dump for duration of 400 ms. The TPS92642-Q1 implements an adaptive on-time average current mode control based on inductor valley current detection. The adaptive on-time control provides near constant switching frequency that can be set between 100 kHz and 2.2 MHz. Inductor current sensing and closed-loop feedback enables better than ±4% accuracy over wide input, output and ambient temperature.
The high-performance infrared LED driver can independently modulate LED current using both analog or PWM dimming techniques. Linear analog dimming range with over 15:1 range is obtained by setting the IADJ voltage. PWM dimming of LED current is achieved by directly modulating the UDIM input pin with desired duty cycle. The device incorporates an internal pulse monitoring circuit that limits the maximum pulse duty cycle.
The TPS92642-Q1 incorporates advanced diagnostic and fault protection featuring: cycle-by-cycle switch current limit, bootstrap undervoltage, LED open, LED short and thermal shutdown.
The TPS92642-Q1 is available in a 6.6-mm × 5.1-mm thermally-enhanced 16-pin HTSSOP package with 0.65-mm lead pitch.
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技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TPS92642-Q1 Automotive Synchronous Buck Infrared LED Driver 数据表 | PDF | HTML | 2023-11-28 | ||
| 应用手册 | 减少基于摄像头的驾驶员监控系统 (DMS) 的布线量 | PDF | HTML | 英语版 | PDF | HTML | 2023-12-20 | |
| 用户指南 | TPS92642-Q1 评估模块用户指南 | PDF | HTML | 英语版 | PDF | HTML | 2023-11-30 | |
| 证书 | TPS92642EVM-203 EU RoHS Declaration of Conformity (DoC) | PDF | HTML | 2022-7-28 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
TPS92642EVM-203 — TPS92642-Q1 评估模块
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 16 | Ultra Librarian |
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