UCC28633 - 具有初级侧稳压功能和峰值功率模式的高功率反激控制器

UCC28633是TI德州仪器公司的一款反激式控制器产品，UCC28633是具有初级侧稳压功能和峰值功率模式的高功率反激控制器，本站介绍了UCC28633的封装应用图解、特点和优点、功能等，并给出了与UCC28633相关的TI元器件型号供参考。

UCC28633 - 具有初级侧稳压功能和峰值功率模式的高功率反激控制器 - 反激式控制器 - 离线隔离型DC/DC控制器和转换器 - 德州仪器

产品特性

High-Power, Primary-Side Regulation for Output Voltage and Current, No Opto-Coupler Required
Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) Operation
Built-In 700-V Start-Up Current Source
Active X-Capacitor Discharge Function (UCC28630 and UCC28633)
Adjustable Constant-Current (CC) Mode Limiting (except for UCC28630)
High Gate Drive Current 1-A Source and 2-A Sink
Low Power Modes for <30-mW System Standby
Best-In-Class Light Load (10%) Efficiency >85% for 65-W Nominal Power Design
Peak-Power Mode for Transient Overload
Shutdown Pin Interface for External NTC
Protections: Overvoltage, Overcurrent, Over-Temperature, Overload Timer (UCC28630), AC Line UV, Brownout and Pin Protections
Frequency Dither to Ease EMI Compliance (except the UCC28632)

产品应用

AC-DC Adapters for Notebook, Game Consoles, Printers
Open Frame SMPS for Industrial, Printer, White Goods, LCD Monitors
Energy Efficient AC-DC Supplies for Nominal Power 10-W to 65-W, (with up to 200% transient peak power)

产品说明

The UCC2863x targets high-power, primary-side regulated flyback converters. The powerful gate driver and ability to operate in both CCM and DCM make the device suitable for applications with a wide power range. The peak power mode allows transient peak power delivery up to 200% of nominal rating, with only a 25% peak current increase, maximizing transformer utilization.

The transformer bias winding is used to sense output voltage for regulation, and for low-loss input voltage sensing. Advanced sampling and processing techniques allow CCM operation, and deliver excellent output voltage regulation performance for opto-coupler-less designs at power levels of 100 W and above.

A high-voltage current source enables fast and efficient start-up. Advanced light-load modes are deployed (including switching frequency modulation and device sleep modes) to reduce both controller and system power consumption at no load and light load. These modes enable potential system designs to meet 30-mW no-load power for power designs up to 30 W nominal, 60 W peak.

The device has been designed for ease-of-use and incorporates many features to enable a wide range of designs. Extensive protection features are included to simplify system design.

Device Information

PART NUMBER	PACKAGE	BODY SIZE
UCC28630	SOIC (7)	4.90 mm x 3.90 mm
UCC28631
UCC28632
UCC28633

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