产品详细信息
参数
封装|引脚|尺寸
特性
- AEC-Q100-qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- 12-channel precision high-side current output:
- Supply voltage 4.5 V to 40 V
- Up to 75-mA channel current set by resistor
- 2-bit global, 6-bit independent current setting
- High current accuracy < ±5% at 5 mA to 75 mA
- High current accuracy < ±10% at 1 mA
- Low voltage drop 500 mV at 50 mA
- 12-bit independent PWM dimming
- Programmable PWM frequency up to 20 kHz
- Linear and exponential dimming method
- FlexWire control interface
- Up to 1-MHz clock frequency
- Maximum 16 devices on one FlexWire bus
- Up to 8-bytes data transaction in one frame
- 5-V LDO output to supply CAN transceiver
- Diagnostic and protection:
- Programmable fail-safe state
- LED open-circuit detection
- LED short-circuit detection
- Single-LED short-circuit diagnostic
- Programmable low-supply detection
- Open-drain ERR for fault indication
- Watchdog and CRC for FlexWire interface
- 8-Bit ADC for pin voltage measurement
- Overtemperature protection
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描述
With increasing demand for animation in automotive lighting, LEDs must be controlled independently. Therefore, LED drivers with digital interfaces are essential to effectively drive pixel-controlled lighting applications. In exterior lighting, multiple lamp functions are typically located on different PCB boards with off-board wires connected to each other. It is difficult for a traditional single-ended interface to meet the strict EMC requirements. By using an industrial-standard CAN physical layer, the UART-based FlexWire interface of the TPS929121-Q1 easily accomplishes long distance off-board communication without impacting EMC.
The TPS929121-Q1 is a 12-channel, 40-V high-side LED driver that controls the 8-bit output current and 12-bit PWM duty cycles. The device meets multiple regulation requirements with LED open-circuit, short-to-ground, and single LED short-circuit diagnostics. A configurable watchdog also automatically sets fail-safe states when the MCU connection is lost, and, with programmable EEPROM, TPS929121-Q1 can flexibly be set for different application scenarios.
技术文档
类型 | 标题 | 下载最新的英文版本 | 日期 | |
---|---|---|---|---|
* | 数据表 | TPS929121-Q1 12-Channel Automotive 40-V High-Side LED Driver With FlexWire 数据表 | 2020年 12月 1日 | |
技术文章 | Here's how body electronics and lighting technology are changing the driving experience | 2016年 9月 26日 | ||
技术文章 | LED brightness adjustment: high-frequency PWM dimming | 2016年 8月 26日 | ||
技术文章 | Take better selfies with innovative LED flashes | 2014年 11月 18日 | ||
技术文章 | Solving the automotive EMI issues in new cars with all the screens | 2014年 9月 10日 |
设计与开发
有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。硬件开发
说明
特性
- 12 通道可独立编程的高精度高侧恒流输出
- 高达 1MHz 时钟频率的 FlexLED 串行接口
- 配备 EEPROM 的可编程失效防护机制
- 带有内置自动 ADC 的 LED 开路、短路和单 LED 短路诊断功能
设计工具和仿真
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入门
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特性
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- 自动测量和后处理
- Monte Carlo 分析
- 最坏情形分析
- 热分析
CAD/CAE 符号
封装 | 引脚 | 下载 |
---|---|---|
HTSSOP (PWP) | 24 | 了解详情 |
订购与质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/FIT 估算
- 材料成分
- 认证摘要
- 持续可靠性监测