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Product details

Parameters

Device type Single-phase PFC Control method CCM Operating supply (Max) (V) 21 Operating supply current (mA) 7 UVLO thresholds on/off (V) 11.4/9.7 Features Audible noise minimization circuitry, Burst mode for no load regualtion, No AC line sensing, Programable switching frequency Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Power factor correction (PFC) controllers

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 open-in-new Find other Power factor correction (PFC) controllers

Features

  • 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)
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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 pre-regulators 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.

Simple external networks allow for flexible compensation of the current and voltage control loops. In addition, UCC28180 offers an enhanced dynamic response circuit that is based on the voltage feedback signal to deliver improved response under fast load transients, both for output overvoltage and undervoltage conditions. An unique VCOMP discharge circuit provided in UCC28180 is activated whenever the voltage feedback signal exceeds VOVP_L thus allowing a chance for the control loop to stabilize quickly and avoid encountering the overvoltage protection function when PWM shutoff can often cause audible noise. Controlled soft start gradually regulates the input current during start-up and reduces stress on the power switches. Numerous system-level protection features available in the controller include VCC UVLO, peak current limit, soft overcurrent, output open-loop detection, output overvoltage protection and open-pin detection (VISNS). A trimmed internal reference provides accurate protection thresholds and regulation set-point. The user can control low-power standby mode by pulling the VSENSE pin below 0.82 V.

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Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$149.00
Description

The UCC28180EVM highlights the many benefits of using the UCC28180 Continuous Current Mode Boost PFC Controller (TI Literature Number SLUUAT3). The controller operates under average current mode control at a fixed programmable switching frequency of 120 kHz. Simple external current and voltage loop (...)

Features
  • 360-W, 390-V output
  • Universal off-line input voltage range
  • Average current mode PWM control
  • No AC line sensing needed
  • Fixed 120 kHz oscillator frequency, programmable with a single external resistor
  • Soft over current and cycle-by-cycle peak current limiting
  • VCC under voltage lockout with low start up (...)

Design tools & simulation

SIMULATION MODELS Download
SLUM423.ZIP (316 KB) - PSpice Model
SIMULATION MODELS Download
SLUM528.ZIP (8 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLUM529.TSC (7453 KB) - TINA-TI Reference Design
CALCULATION TOOLS Download
SLUC506C.ZIP (310 KB)

Reference designs

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CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

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