High power factor corrector LED driver has a low startup current of 8uA

August 28, 2012 // By Julien Happich
The TS19702 is a highly-integrated average current mode, fixed switching frequency PWM controller with low startup current of 8uA typical. Average efficiency rate is over 85 % while the power factor is above 0.9 at 264 Vac / 50 Hz.

Integrated functions also include a LED short protection, open protection, and internal over temperature protection. The COMP pin controls the duty by connecting an RC compensation network to ground and forming the closed loop feedback control. To protect the external power MOSFET from being damaged by supply over voltage, the TS19702 Output Pin voltage is clamped to 15V.

Due to the simple reference design this LED Driver leads to lower the BOM costs.

Typical applications are E27, T5 & T8 LED Lighting. The TS19702 is available in a Halogen-Free SOT-26 package.

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