SLUSBQ5D November 2013 – July 2016 UCC28180
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Description (Continued)
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Soft Start
- 8.3.2 System Protection
- 8.3.3 VCC Undervoltage LockOut (UVLO)
- 8.3.4 Output Overvoltage Protection (OVP)
- 8.3.5 Open Loop Protection/Standby (OLP/Standby)
- 8.3.6 ISENSE Open-Pin Protection (ISOP)
- 8.3.7 ICOMP Open-Pin Protection (ICOMPP)
- 8.3.8 FAULT Protection
- 8.3.9 Output Overvoltage Detection (OVD), Undervoltage Detection (UVD) and Enhanced Dynamic Response (EDR)
- 8.3.10 Overcurrent Protection
- 8.3.11 Soft Overcurrent (SOC)
- 8.3.12 Peak Current Limit (PCL)
- 8.3.13 Current Sense Resistor, RISENSE
- 8.3.14 ISENSE Pin
- 8.3.15 Gate Driver
- 8.3.16 Current Loop
- 8.3.17 ISENSE and ICOMP Functions
- 8.3.18 Pulse Width Modulator
- 8.3.19 Control Logic
- 8.3.20 Voltage Loop
- 8.3.21 Output Sensing
- 8.3.22 Voltage Error Amplifier
- 8.3.23 Non-Linear Gain Generation
- 8.4 Device Functional Modes
-
9 Application and Implementation
- 9.1 Application Information
- 9.2
Typical Application
- 9.2.1 Design Requirements
- 9.2.2
Detailed Design Procedure
- 9.2.2.1 Current Calculations
- 9.2.2.2 Switching Frequency
- 9.2.2.3 Bridge Rectifier
- 9.2.2.4 Inductor Ripple Current
- 9.2.2.5 Input Capacitor
- 9.2.2.6 Boost Inductor
- 9.2.2.7 Boost Diode
- 9.2.2.8 Switching Element
- 9.2.2.9 Sense Resistor
- 9.2.2.10 Output Capacitor
- 9.2.2.11 Output Voltage Set Point
- 9.2.2.12 Loop Compensation
- 9.2.3 Application Curve
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support . .
- 13Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
- D|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information
1 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)
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 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.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| UCC28180 | SOIC (8) | 4.90 mm × 3.91 mm |
- For all available packages, see the orderable addendum at the end of the datasheet.
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