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参数

Topology Boost Controller, Buck Controller, Buck-Boost Controller, Cuk Controller, Flyback Controller, Sepic Controller Channels (#) 1 Vin (Min) (V) 4.5 Vin (Max) (V) 65 Vout (Min) (V) 3 Vout (Max) (V) 65 Iout (Max) (A) 5 Iq (Typ) (mA) 1.8 LED current per channel (mA) 5000 Switching frequency (Max) (kHz) 800 Operating temperature range (C) -40 to 125 Features Adjustable Switch Frequency, Fault Detection, LED Open Detection, LED Short to Ground Detection, Precision Dimming Control, Soft Start, Spread Spectrum, Synchronization Pin, Thermal Shutdown Applications Adaptive Headlamp, Daytime Running, Fog, Headlamp, Position, Stop/Tail, Turn Rating Automotive open-in-new 查找其它 汽车LED驱动器

封装|引脚|尺寸

HTSSOP (PWP) 20 42 mm² 6.5 x 6.4 open-in-new 查找其它 汽车LED驱动器

特性

  • Wide Input Voltage: 4.5 V to 65 V
  • Better than ± 4% LED Current Accuracy over –40°C to 150°C Junction Temperature Range
  • Spread Spectrum Frequency Modulation for Improved EMI
  • Comprehensive Fault Protection Circuitry with Current Monitor output and Open Drain Fault Flag Indicator
  • Internal Analog Voltage to PWM Duty Cycle Generator for stand-alone Dimming Operation
  • Compatible with Direct PWM Input with over 1000:1 Dimming Range
  • Analog LED Current Adjust Input (IADJ) with over 15:1 Contrast Ratio
  • Integrated P-Channel Driver to enable Series FET Dimming and LED Protection
  • TPS92692-Q1: Automotive Q100 Grade 1 Qualified

All trademarks are the property of their respective owners.

open-in-new 查找其它 汽车LED驱动器

描述

The TPS92692 and TPS92692-Q1 are high accuracy peak current mode based controllers designed to support step-up/down LED driver topologies. The device incorporates a rail-to-rail current amplifier to measure LED current and spread spectrum frequency modulation technique for improved EMI performance.

This high performance LED controller can independently modulate LED current using either analog or PWM dimming techniques. Linear analog dimming response with over 15:1 range is obtained by varying the voltage across the high impedance analog adjust (IADJ) input. PWM dimming of LED current is achieved by directly modulating the DIM/PWM input pin with the desired duty cycle or by enabling the internal PWM generator circuit. The PWM generator translates the DC voltage at DIM/PWM pin to corresponding duty cycle by comparing it to the internal triangle wave generator. The optional PDRV gate driver output can be used to drive an external P-Channel series MOSFET.

The TPS92692 and TPS92692-Q1 devices support continuous LED status check through the current monitor (IMON) output. The devices also include an open drain fault indicator output to indicate LED overcurrent, output overvoltage and output undervoltage conditions.

open-in-new 查找其它 汽车LED驱动器
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技术文档

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类型 标题 下载最新的英文版本 发布
技术文章 Designing daytime running lights, part 2: responding to an LED fault 2018年 12月 6日
技术文章 Designing daytime running lights, part 1: adding one-fail-all-fail LED fault detection 2018年 12月 4日
解决方案指南 LED Drivers for Automotive Exterior Applications 2018年 3月 27日
选择指南 汽车外部照明应用的LED驱动器 2018年 3月 15日
用户指南 TPS92692 Boost and Boost-to-Battery LED Driver Evaluation Board 2017年 3月 10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

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

评估板 下载
document-generic 用户指南
$75.00
说明

TPS92692EVM-880 是经过全面组装和测试的 LED 驱动器,可配置为升压或升压到电池拓扑,以为单串串联 LED 供电。它可以使用低偏移轨至轨电流感应放大器及高侧电流感应实施来实现精确的闭环 LED 电流调节。可以使用高阻抗模拟调节 (IADJ) 输入以 15:1 的比率改变直流 LED 电流设置点。可以通过借助所需占空比直接调制 PWM/DIM 输入引脚或通过启用内部 PWM 发生器电路来实现 LED 电流的 PWM 调光。可选 PDRV 栅极驱动器输出可用于驱动外部 P 通道系列 MOSFET。

TPS92692/-Q1 支持通过电流监视器 (IMON) 输出进行连续 LED 状态检查。该器件还包括用于指示 LED 过流、输出过压和输出欠压情况的开漏故障指示器输出。

 

特性
  • 多功能 LED 驱动器,能够驱动 1 至 20 个串联的白色 LED
  • 宽输入电压范围(4.5V 至 18V):支持高达 65 Vmax 的汽车启停和负载突降瞬变
  • 使用高侧电流感应电阻器获得优于 +/-4% 的 LED 电流调节
  • PWM 占空比发生器的内部模拟电压可用于独立调光操作
  • 扩频频率调制,可用于提高 EMC 性能

设计工具和仿真

仿真模型 下载
SLVMC05A.ZIP (121 KB) - PSpice Model
计算工具 下载
SLVC686.ZIP (123 KB)
计算工具 下载
SLVC687.ZIP (259 KB)

参考设计

参考设计 下载
适用于汽车远光灯和近光灯的 55W 两级降压/升压 LED 驱动器参考设计
TIDA-050002 — 此参考设计描述了双模式远近光应用中采用单个控制器和功率级的 TPS92692-Q1 LED 驱动器。此设计在升压模式下运行时提供远光,在升压到电池模式下运行时提供近光。单控制器功率级设计实现了更简单、更具有成本效益的照明系统。TPS92692 器件的其他设计灵活性包括模拟和 PWM 调光支持,以及内置监测功能,以便进行故障检测和提供连续 LED 电流保护。此设计包含 EMI 滤波功能,旨在满足 CISPR-25 5 类传导要求。
document-generic 原理图 document-generic 用户指南 document-generic 下载英文版本
参考设计 下载
具有电流均衡功能的汽车日间行车灯双灯串 LED 驱动器参考设计
TIDA-01581 — This reference design is a dual string LED driver that implements an operational amplifier based circuit which balances the current in two LED rings. The operational amplifier circuit senses current in a reference string and uses feedback from a mirrored string to bias a MOSFET that egulates the (...)
document-generic 原理图 document-generic 用户指南 document-generic 下载英文版本

CAD/CAE 符号

封装 引脚 下载
HTSSOP (PWP) 20 视图选项

订购与质量

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