Texas Instruments TPS92602-Q1 自动前头灯 LED 驱动器
德州仪器 TPS92602-Q1 汽车头灯 LED 驱动器是双通道高侧电流 LED 驱动器。该器件具有全面的保护和诊断功能，非常适合用于汽车前大灯。每一独立驱动器都有一个采用峰值电流模式的升压控制器作为底座。每一控制器均具有一个带高侧电流感应分流器的电流反馈环路和一个带外部电阻分压器网络的电压反馈环路。每一控制器均具有两个独立的反馈环路，一个带高侧电流感应分流器的电流反馈环路和一个带外部电阻分压器网络的电压反馈环路。该控制器提供恒定的输出电压或恒定的输出电流。联结负载决定了该器件是调节恒定输出电流（当电路在达到电压设置点之前达到电流设置点时）还是恒定输出电压（当电路先达到电压设置点，如在开路状态下）。
特性
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results
- Device Temperature Grade 1: -40°C to 125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
- 4V-40V (45V Abs. Max.) Input Voltage
- 4V-75V (80V Abs. Max.) Output Voltage
- Fixed-Frequency Current-Mode Controller With Integrated Slope Compensation
- Two Regulation Loops, Constant-Current Output, and Constant-Voltage Output
- High-Side Current Sense
- 150mV or 300mV Sense Voltage (EEPROM Option)
- ±6mV Offset (Achieving Approx. 4% or 2% LED Current Accuracy)
- Output Voltage Sense, Internal Voltage Reference: 2.2V ±5%
- Integrated Low-Side NMOS-FET Driver: Peak Gate-Drive Current Typ. 0.7A
- Frequency Synchronization
- Both PWM Dimming and Analog Dimming
- Diagnostic
- High-Side Current (LED Current) Available as Analog Output
- Open-LED and Short-to-GND Detection
- Shorted Output Protection
- Internal Under- and Overvoltage Lockout
应用
- Automotive Headlight LED Driver
- High-Brightness LED Applications
Typical Schematic
Related Development Tool
Texas Instruments TPS92602EVM 评估模块(EVM)
评估 TPS92602-Q1 汽车头灯 LED 驱动器的工作情况和性能。
发布日期: 2014-12-17
| 更新日期: 2022-03-11