TS19310 Datasheet, PDF (5/8 Pages) Taiwan Semiconductor Company, Ltd – Single-Stage PFC TRIAC Dimmable LED Driver

Typical Application Circuit
TS19310A/B
Single-Stage PFC
TRIAC Dimmable LED Driver
Application Information
Function Description
The TS19310 is boundary conduction mode (BCM) operation with constant on time based regulator design to
achieve high power factor performance. The TS19310 has built-in functions of phase dimmable, and included
protection function related V_CC over-voltage protection, open-LED protection, short-LED protection, over-
temperature protection, primary side current limit, and gate clamp is within. The TS19310 is the sense switch
current from CS voltage multiplier by test data input signal (TDIS) to get the output current information by system
close loop feedback.
The average output current can express by below formula.
IOUT  ^NP  ^0.333*
NS 2  RS
Where:
● I_OUT is the average output current
● N_P is the primary-side turn ratio
● N_S is the secondary-side turn ratio
● 0.333 is the reference potential setting of IC
● 2 is the reference potential setting of IC
● η is the efficiency
● R_S is the sensing resistor connected between the MOSFET source and the GND
Pin Detail
Pin 1: Compensation
This is the output of the g_m amplifier. Connect with a suitable RC network to ground.
Pin 2: Ground
GND is the reference node of internal circuit.
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Version: A14