TPS92314ADR/NOPB

LED照明驱动器 OffLine Primary Side Sensing Cntrller

DESCRIPON

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.

FEATURES

• 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

APPLICATIONS

• Residential LED Lamps: A19 E26/27, E14, PAR30/38, GU10

• Solid State Lighting