The UCC28180 is a flexible and easy-to-use 8-pin active power factor correction (PFC) controller operating in continuous conduction mode (CCM) for boost pre-stabilization in AC-DC front ends. The voltage regulator provides high power factor, low current distortion and excellent voltage regulation. Suitable for universal AC input systems ranging from 100 watts to several kilowatts, the controller is programmable from 18kHz to 250kHz switching frequency to easily support power MOSFET and IGBT switching. Integrated 1.5A and 2A (SRC-SNK) peak gate drive outputs are internally clamped to 15.2V (typ) for fast connection without buffer circuits turn on, turn off, and easily manage external power switches. By using average current mode control, low distortion waveform shaping of the input current can be achieved without input line sensing, reducing external component count. In addition, the controller has a reduced current-sensing threshold, which facilitates the use of low-value shunt resistors to reduce power dissipation, which is especially important for high-power systems. To achieve low current distortion, the controller also features a regulated current loop regulator circuit to eliminate associated errors.
 

1.Pin Diagram :


2. Absolute Maximum Ratings (over operating free-air temperature range (unless otherwise noted)):


3. Electrical Characteristics @ TJ = 25°C (TA=-55°C to +125°C for UC1846/7; -40°C to +85°C for the UC2846/7; and 0°C to +70°C for the UC3846/7; VIN=15 V,RT=10k, CT=4.7 nF, TA=TJ(unless otherwise noted)) :

• 8-pin solution (no AC line sense required)
• Wide-range programmable switching frequency (for metal-oxide-semiconductor-based Body Field Effect Transistor (MOSFET)       and Insulated Gate Bipolar Based18kHz to 250kHz for PFC controller for IGBTs)
• Adjusted current loop for iTHD reduction
• Reduced current sense thresholds (minimizing shunt resistance consumption)
• Average current mode control
• Soft overcurrent and cycle-by-cycle peak current limit protection
• Output overvoltage protection with hysteretic recovery
• Audible noise minimization circuitry
• Open loop detection
• Improved dynamic response during output overvoltage and undervoltage conditions
• Up to 96% duty cycle (typ)
• Burst Mode for No Load Regulation
• VCC undervoltage lockout (UVLO), low additive dynamic power current(ICC) startup (< 75µA)
 

• Universal AC input in the range of 100 watts to several kilowatts, CCM liters pressure PFC converter
• Server and desktop power
• Large household appliances (air conditioners, refrigerators)
• Industrial power supply (German Institute for Standardization (DIN) power rails)
• Flat Panels (Plasma (PDP), Liquid Crystal (LCD) and Light Emitting Diodes(LED)) TV
 

why choose us :
advantage:
1.Produce Range
Yangjiang RUIXIAO Enterprise Co,.Ltd,major in the electronic component , who have wide range of products,
such as IC,resistor , capacitor , mosfet , diodes, module , LED, relay, lcd. pcb board . and so.  the brand involves:SHARP, POWER, ,  NS, ON, ST , IR, VISHAY , TOSHIBA, FAIRCHILD,MICROCHIP, ATMEL,EVERYLIGHT all the kinds  of electronic component you need will be find in  here.


2.Production workshop



3.Scope of application
the product  is widely used in Automotive industry control,new energy industry,Audio,Home appliances equipment,Communication industry.it can  meet the diverse needs of customers

4.service:
with the  "User first, customer first" Company motto, quality assurance ,  economic price , fast Delivery time is our only faith. we will try our best to make every customer to enjoy the  the most flexible,efficient  services.We sincere hope that we can seek the common development and cooperation with  the customer together to achieve a win-win situation.

5.Logistics:
we can send the goods to the customer's country directly by the international logistics.  no matter send by air or by sea. 
we will try our best to let the customer to get the parcel more convenient .
(noted:Not bear  any fee and tax of the transportation cost.)