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TPS92692-Q1

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具有扩频频率调制功能和内部 PWM 发生器的高精度 LED 控制器

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数据表

TPS92692-Q1

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产品详情

Number of channels 1 Topology Boost Controller, Buck Controller, Buck-Boost Controller, Cuk Controller, Flyback Controller, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 125 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 Switching frequency (max) (kHz) 800 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
Number of channels 1 Topology Boost Controller, Buck Controller, Buck-Boost Controller, Cuk Controller, Flyback Controller, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 125 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 Switching frequency (max) (kHz) 800 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
HTSSOP (PWP) 20 41.6 mm² (6.5 mm × 6.4 mm)
  • 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
  • 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

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.

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.
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技术文档

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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 TPS92692, TPS92692-Q1 High Accuracy LED Controller With Spread Spectrum Frequency Modulation 数据表 PDF | HTML 2017-3-8
应用手册 汽车前照灯选择指南 PDF | HTML 英语版 PDF | HTML 2021-9-29
应用手册 Analog Thermal Foldback With LED Drivers 2020-6-10
技术文章 Designing daytime running lights, part 2: responding to an LED fault PDF | HTML 2018-12-6
技术文章 Designing daytime running lights, part 1: adding one-fail-all-fail LED fault detec PDF | HTML 2018-12-4
白皮书 LED Drivers for Automotive Exterior Applications (Rev. B) 2018-3-27
选择指南 汽车外部照明应用的LED驱动器 2018-3-15

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）。

评估板

TPS92692EVM-880 — TPS92692-Q1 升压和升压到电池 LED 驱动器评估模块

TPS92692EVM-880 是经全面封装测试的 LED 驱动器，可配置为升压或升压到电池拓扑，用于为单串串联 LED 供电。它可以使用低偏移轨到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。  使用高阻抗模拟调节 (IADJ) 输入以 15:1 的比率更改直流 LED 电流设定点。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。选配的 PDRV 栅极驱动器输出可用于驱动外部 P 沟道串联 MOSFET。

TPS92692/-Q1 支持通过电流监控器 (IMON) 输出进行持续 LED (...)

用户指南: PDF
支持的产品和硬件
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仿真模型

TPS92692-Q1 Boost and Buck Boost PSpice Transient Model (Rev. A)

SLVMC05A.ZIP (121 KB) - PSpice 模型
支持的产品和硬件
计算工具

SLVC686 — TPS92692-Q1 Buck-Boost Design Calculator

支持的产品和硬件
计算工具

SLVC687 — TPS92692-Q1 Boost Design Calculator

支持的产品和硬件
参考设计

TIDA-01581 — 支持电流均衡的汽车日间行车灯双串 LED 驱动器参考设计概述

此参考设计是双串 LED 驱动器，该驱动器采用基于运算放大器的电路来平衡两个 LED 环中的电流。该运算放大器电路可检测参考灯串中的电流，并使用来自镜像灯串的反馈对调节这些灯串之间电流的 MOSFET 进行偏置。该设计使用升压配置的 TPS92692-Q1 多拓扑 LED 驱动器来驱动 LED。TPS92692-Q1 具有可实现 EMI 性能、模拟电流调节和内部 PWM 调光的扩频调频功能。  该设计包括使用 LMT87-Q1 模拟温度传感器的可调节线性热折返，以及在镜像灯串出现开路故障时的电流限制。该设计还具有两种亮度模式。一种模式是全亮度模式（“DRL”），另一种模式是可以降低亮度的 (...)
支持的产品和硬件
参考设计

TIDA-050002 — 适用于汽车远光灯和近光灯的 55W 双路降压/升压 LED 驱动器参考设计

该参考设计描述了双路远光和近光应用中具有单个控制器和功率级的 TPS92692-Q1 LED 驱动器。该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可实现更简单、更具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，以及内置故障检测监控和连续 LED 电流保护。包含 EMI 滤波，旨在满足 CISPR-25 5 类传导要求。
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
HTSSOP (PWP) 20 Ultra Librarian
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