TPS92314 - 具有 PFC 的 TPS92314 脱机初级侧感应转换器

TPS92314是TI德州仪器公司的一款LED照明-照明产品，TPS92314是具有 PFC 的 TPS92314 脱机初级侧感应转换器，本站介绍了TPS92314的封装应用图解、特点和优点、功能等，并给出了与TPS92314相关的TI元器件型号供参考。

TPS92314 - 具有 PFC 的 TPS92314 脱机初级侧感应转换器 - LED照明-照明 - LED驱动器 - 德州仪器

产品描述

The TPS92314/14A is an off-line controller specifically designed to drive high power LEDs for lighting applications. Features include adaptive constant on-time control and quasi-resonant switching. Resonant switching allows for a reduced EMI signature and increased system efficiency. Thus, the device introduces a low external parts count and high level of integration. The control algorithm of TPS92314/14A adjusts the on time with reference to the primary side inductor peak current and secondary side inductor discharge time dynamically, the response time of which is set by an external capacitor.

The over current protection is implemented by a cycle by cycle current limit of the primary inductor current. TPS92314A has a higher OCP threshold which is more suitable for universal line application and TPS92314 can optimize the system cost. Other supervisory features of the TPS92314/14A include VCC over voltage protection and under-voltage lockout, output LEDs over-voltage protection and controller thermal shutdown. The TPS92314/14A is available in 8-pin SOIC package.

产品特性

Regulates LED Current Without Secondary Side Sensing
Adaptive ON-time Control with Inherent PFC
Critical-Conduction-Mode (CRM) with Zero-Current Detection (ZCD) for Valley Switching
Programmable Switch Turn ON Delay
Programmable Constant ON-Time (COT)
Over Current Limit Options:
- TPS92314: 1.15V
- TPS92314A: 2.0V
Advanced Over Current and Over Voltage Protection
Internal Over-temperature Protection
8-Pin SOIC Package

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