TPS92310 Datasheet | Texas Instruments

FEATURES - 2 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) and Peak Current Control - Over-Temperature Protection APPLICATIONS - LED Lamps: A19 (E26/27, E14), PAR30/38, GU10 - Solid State Lighting DESCRIPTION The TPS92310 is an off-line controller specifically designed to drive high power LEDs for lighting applications. With the primary side sensing, constant on-time and quasi-resonant switching techniques, the TPS92310 application circuit gives high Power Factor, good EMI performance and high system efficiency. Also, using this device, low external ponent count application solutions can be designed easily. Power Factor Correction is inherent if the TPS92310 is operated in the constant on-time mode with an adaptive algorithm. The control algorithm of TPS92310 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. Also, minimized EMI and switching loss is achieved with quasi-resonant switching. Other supervisory features of the TPS92310 include cycleby-cycle primary side inductor current limit, VCC under-voltage lockout, output over-voltage protection and thermal shutdown. The TPS92310 is available in the VSSOP-10 package. Typical Application D3 LED Stack D1 AC IN CIN R1 - Z1 T1 LP LS COUT VLAUX R4 D2 R2 LAUX - Optional CVCC DZCD CP RDLY CZCD R3 VCC ZCD AGND P DLY GATE ISNS PGND MODE1 MODE2 Y1 VSW Q1 RISNS Figure 1. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective...