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  [组图]TI UCC28710输出28V 350W电源参考设计           ★★★ 【字体:
TI UCC28710输出28V 350W电源参考设计
作者:TI    文章来源:TI    点击数:    更新时间:2015-1-4    
TI公司的UCC28710是反激电源控制器,不需要光耦提供隔离的恒压(CV)和恒流(CC)输出,内部集成了700V起动开关,动态控制工作状态,支持超低待机功耗, UCC28710系列中的控制算法使得工作效率满足或超过设备所需标准,最大工作效率100kHz,主要用于AC/DC电源,洗衣机和烘干机,电子仪表,智能手机,消费和烟雾检测,冰箱,太阳能逆变器,电路中断器,电动自行车,温度调温器,照明,服务器电源,多媒体电源等.本文介绍了UCC28710主要特性,框图, 简化反激转换器电路以及通用输入28V输出350W电源PSU参考设计主要特性,电路图和材料清单.

The UCC28710 family of flyback power supply controllers provides isolated-output Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

An internal 700-V start-up switch, dynamically-controlled operating states and a tailored modulation profile support ultra-low standby power without sacrificing start-up time or output transient response.

Control algorithms in the UCC28710 family allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a MOSFET power switch. Discontinuous conduction mode (DCM) with valley switching reduces switching losses. Modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

The controllers have a maximum switching frequency of 100 kHz and always maintain control of the peak-primary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28710, UCC28714 and UCC28715 allow the cable compensation to be programmed. The UCC28711, UCC28712 and UCC28713 devices allow remote temperature sensing using a negative temperature coefficient (NTC) resistor while providing fixed cable-compensation levels.

UCC28710主要特性:
< 10-mW No-Load Power
Primary-Side Regulation (PSR) Eliminates Opto-Coupler
±5% Voltage and Current Regulation Across Line and Load
700-V Start-Up Switch
100-kHz Maximum Switching Frequency Enables High-Power Density Charger Designs
Quasi-Resonant Valley-Switching Operation for Highest Overall Efficiency
Frequency Jitter to Ease EMI Compliance
Wide VDD Range Allows Small Bias Capacitor
Clamped Gate-Drive Output for MOSFET
Overvoltage, Low-Line, and Overcurrent Protection Functions
Programmable Cable Compensation (UCC28710, UCC28714 and UCC28715)
NTC Resistor Interface (UCC28711, UCC28712 and UCC28713) with Fixed Cable Compensation Options
SOIC-7 Package

UCC28710主要应用:
AC/DC Power Supply - Dual Analog Controller
Clothes Washer & Dryer
Electricity Meters
Fire and Smoke Detection
Handset: Smartphone
Lighting: Down Light & Low Bay
Microwave Oven
Power Supply: AC/DC, Isolated, w/ PFC, > 90W
Refrigerator
Solar Inverters
Thermostat
Circuit Breakers
E-Bike
Fault Passage Indicator
HVAC
Industrial Monitor
Lighting: Streetlight, AreaLight, HighBay & MidBay
Power Supply: AC/DC, Isolated, no PFC, < 90W
Protection Relay
Server: PSU
Tablet: Multimedia
Washing Machine: Low-End

图1. UCC28710框图

图2. UCC28710简化应用电路

图3. UCC28710简化反激转换器电路

通用输入28V输出350W电源PSU参考设计

High efficiency, high power factor and reliable power supply are the main focus of the PMP9531 design for motor driver applications.  Transition mode (TM) power factor correction (PFC) with UCC28051 and LLC series resonant converter (SRC) with UCC25600 are applied in PMP9531.  In addition, a high-side buck converter with UCC28710 is applied here as the bias supply.  93% converter efficiency is achieved at high line while still obtaining 90% converter efficiency at low line.

350W电源PSU参考设计主要特性:

Universal 85VAC-264VAC input
28V 350W output
Up to 93% converter efficiency
TM PFC output power goes up to 385W
AC-DC PSR buck for bias supply
IMG_256
图4. 350W电源PSU参考设计外形图

图5. 350W电源PSU参考设计电路图(1)

图6. 350W电源PSU参考设计电路图(2)

图7. 350W电源PSU参考设计电路图(3)
350W电源PSU参考设计材料清单:


详情请见:
http://www.ti.com/lit/ds/symlink/ucc28710.pdf
http://www.ti.com/lit/df/tidrak0/tidrak0.pdf
以及http://www.ti.com/lit/df/tidrak1/tidrak1.pdf
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