High voltage startup, Integrated Switch, Leading edge blanking, Light load efficiency, Low power, Overcurrent protection, Overtemperature protection, Soft start

Control mode

Voltage

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck, Flyback

Switching frequency (max) (kHz)

62

Features

High voltage startup, Integrated Switch, Leading edge blanking, Light load efficiency, Low power, Overcurrent protection, Overtemperature protection, Soft start

Control mode

Voltage

Rating

Catalog

Operating temperature range (°C)

-40 to 125

SOIC (D)

7

29.4 mm² 4.9 x 6

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

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

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.

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.

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檢視所有 11

	類型	標題		日期
*	Data sheet	UCC28880 700-V, 100-mA Low Quiescent Current Off-Line Converter datasheet (Rev. D)	PDF \| HTML	2016年 3月 29日
	Application note	Operating UCC2888x Offline Buck in Saturation for Cost Reduction		2018年 6月 22日
	Application note	Magnetic Immune SMPS for Single-Phase LPRF Smart Meter		2018年 2月 28日
	Technical article	How to build a cost-competitive and robust auxiliary power supply	PDF \| HTML	2018年 2月 1日
	Application note	UCC2888x Diode Selection When Configured as High Side Buck		2017年 11月 20日
	Technical article	Unique techniques to increase controller power	PDF \| HTML	2017年 8月 23日
	Application note	UCC28880, UCC28881 Audible Noise Reduction Techniques		2017年 3月 23日
	EVM User's guide	UCC28880EVM-616 High-Side Buck Evaluation Module (Rev. C)		2017年 2月 1日
	Technical article	Powering the IoT	PDF \| HTML	2017年 1月 26日
	White paper	Redefining power management through high-voltage innovation		2015年 11月 12日
	EVM User's guide	UCC28880EVM-615 Low-Side Buck Evaluation Module		2014年 7月 8日

設計與開發

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開發板

UCC28881EVM-680 — UCC28881 離線高壓側降壓轉換器評估模組

The UCC28881EVM-680 evaluation module (EVM) is an offline high-voltage buck-type power supply that provides 13 VDC at a maximum output of 225 mA. The input accepts a voltage range of 85 VAC to 265 VAC.

使用指南: PDF