UCC28880 Texas instruments

UCC28880

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UCC28880

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Описание

The UCC28880 integrates the controller and a 700-V power MOSFET into one monolithic device. The device also integrates a high-voltage current source, enabling start up and operation directly from the rectified mains voltage. The low quiescent current of the device enables excellent efficiency. With the UCC28880 the most common converter topologies, such as buck, buck-boost and flyback can be built using a minimum number of external components. The UCC28880 incorporates a soft-start feature for controlled start up of the power stage which minimizes the stress on the power-stage components.

Integrated Power MOSFET (Switch) Rated to
700-V Drain-to-Source Voltage
Integrated High-Voltage Current Source for Internal Low-Voltage Supply Generation
Soft Start
Self-Biased Switcher (Start Up and Operation Directly from Rectified Mains Voltage)
Supports Buck, Buck-Boost and Flyback Topologies
<100-μA Device Quiescent Current
Robust Performance with Inductor Current Runaway Prevention
Thermal Shutdown
Protection
- Current Limit
- Overload and Output Short Circuit

Control mode	Voltage
UVLO thresholds on/off (V)	3.9/3.6
Duty cycle (max) (%)	55
Switching frequency (max) (kHz)	62
Features	Current limiting, Green mode, High-voltage startup, Integrated Switch, Leading edge blanking, Light-load efficiency, Low power, Soft start, Thermal shutdown
Operating temperature range (°C)	-40 to 125
Rating	Catalog
Device type	Controllers
Topology	Buck, Flyback