UCC28180DR集成电路（IC）的PFC（功率因数校正）规格书PDF中文资料

UCC28180DR属于集成电路（IC）的PFC（功率因数校正）。由德州仪器制造生产的UCC28180DRPFC（功率因数校正）功率因数校正 (PFC) 是用于调整交流电路中的电压和电流之间的相位角，使之趋近于零的半导体器件。不同模式包括平均电流、边界导通、连续导通、临界导通、电流控制式频率折返、不连续和不连续导通，开关频率从 6 kHz 至 1.7 MHz 可调。

1 Features

1• 8-Pin Solution (No AC Line Sensing Needed)

• Wide Range Programmable Switching Frequency

(18 kHz to 250 kHz for MOSFET and IGBT-based

PFC Converters)

• Trimmed Current Loop Circuits for Low iTHD

• Reduced Current Sense Threshold (Minimizes

Power Dissipation in Shunt)

• Average Current-Mode Control

• Soft Over Current and Cycle-by-Cycle Peak

Current Limit Protection

• Output Overvoltage Protection With Hysteresis

Recovery

• Audible Noise Minimization Circuitry

• Open Loop Detection

• Enhance Dynamic Response During Output

Overvoltage and Undervoltage Conditions

• Maximum Duty Cycle of 96% (Typical)

• Burst Mode for No Load Regulation

• VCC UVLO, Low ICC Start-Up (< 75 μA)

2 Applications

• Universal AC Input, CCM Boost PFC Converters

in 100-W to Few-kW Range

• Server and Desktop Power Supplies

• White Good Appliances (Air Conditioners,

Refrigerators)

• Industrial Power Supplies (DIN Rail)

• Flat Panel (PDP, LCD, and LED) TVs

3 Description

The UCC28180 is a flexible and easy-to-use, 8-pin,

active Power-Factor Correction (PFC) controller that

operates under Continuous Conduction Mode (CCM)

to achieve high Power Factor, low current distortion

and excellent voltage regulation of boost preregulators

in AC - DC front-ends. The controller is

suitable for universal AC input systems operating in

100-W to few-kW range with the switching frequency

programmable between 18 kHz to 250 kHz, to

conveniently support both power MOSFET and IGBT

switches. An integrated 1.5-A and 2-A (SRC-SNK)

peak gate drive output, clamped internally at 15.2 V

(typical), enables fast turn-on, turn-off, and easy

management of the external power switch without the

need for buffer circuits.

Low-distortion wave shaping of the input current

using average current mode control is achieved

without input line sensing, reducing the external

component count. In addition, the controller features

reduced current sense thresholds to facilitate the use

of small-value shunt resistors for reduced power

dissipation, especially important in high-power

systems. To enable low current distortion, the

controller also features trimmed internal current loop

regulation circuits for eliminating associated

inaccuracies.