ISOLATED, PRIMARY SIDE CONTROL LED LIGHTING DRIVER WITH ACTIVE PFC

DESCRIPTION

The UTC UPSL101 is a primary side control offline LED
lighting controller which can achieve high power factor and
accurate LED current for an isolate lighting application in a single
converter.
The UTC UPSL101 can control the LED current accurately
from the primary side information. It can significantly simplify the
LED lighting system design by eliminating the secondary side
feedback components and the opto-coupler. And it integrates
power factor correction function and works in transition mode for
reducing the MOSFET switching losses.
The LED current can be adjusted externally by the sense
resistor RCS at CS pin. The UTC UPSL101 achieves high
precision current along with excellent line regulation and load
regulation.
The UTC UPSL101 offers comprehensive protection coverage
with auto-recovery features including VCC over voltage protection,
LED open/short circuit protection, over temperature protection,
over current protection, leading edge blanking, VCC under voltage
lockout, VCC clamp, GATE clamp, etc.

FEATURES

* Primary-side control with single stage PFC topology
* Transition mode (TM) operation to achieve high efficiency
* Minimized BOM count
* Cycle-by-cycle current limiting (OCP)
* Selectable threshold of OCP
* High current accuracy
* VCC over voltage protection
* Analog multiplier for power factor correction
* Over-temperature protection
* Output over voltage protection
* LED open circuit protection
* LED short circuit protection
* Soft-start
* Ultra-low start-up current
* VCC under voltage lockout (UVLO)