The TS19721 is a high power factor and high accuracy constant current PWM controller.
It integrates high voltage MOSFET to reduce system component. It is able to control total harmonic distortion (THD) and efficiency optimization by an external resistor.
TS19721 achieves high power factor and high efficiency by boundary conduction mode (BCM). The line and load regulation of LED current are within ±2.5%.
TS19721 also provides gate driving voltage clamping, VCC over-voltage protection, and system output open/short circuit protection to increase IC performance.
The switching frequency varies depending on the output load in the recommended range from 40 to 150 kHz.
The 3.7 × 2.0 cm2 demo board module 10 W delivers 200 mA at 50 V for about 15 to 20 LEDs on the output side and available for developers.
Features:
- Constant Current Accuracy within ±2.5%
- Integrated 700V MOSFET (TS19721A), integrated 600V MOSFET (TS19721D)
- Efficiency > 90%
- High Power Factor > 0.9
- Low THD <15% ~ 20% (By spec. condition)
- Boundary Conduction Mode Control
- Gate Output Voltage Clamp
- LED Open Protection, LED Short Protection
- Over Current Protection (OCP), Over Thermal Protection (OTP)
