具有初级侧调节功能的 UCC2871x 恒压、恒流控制器
- ZHCSAH7C November 2012 – June 2017 UCC28710 , UCC28711 , UCC28712 , UCC28713
  
  PRODUCTION DATA.

Full reading width

DATA SHEET

具有初级侧调节功能的 UCC2871x 恒压、恒流控制器

本资源的原文使用英文撰写。为方便起见，TI 提供了译文；由于翻译过程中可能使用了自动化工具，TI 不保证译文的准确性。为确认准确性，请务必访问 ti.com 参考最新的英文版本（控制文档）。

1 特性

小于 10mW 空载功耗
采用初级侧调整 (PSR)，无需光耦合器
线路和负载具有 ±5% 电压调节和电流调节
700V 启动开关
100kHz 最大开关频率可实现高功率密度充电器设计
具有谐振谷底开关运行，可实现最高总体效率
频率抖动以简化电磁干扰 (EMI) 兼容性
宽 VDD 范围允许使用小型偏置电容器
针对金属氧化物半导体场效应晶体管 (MOSFET) 的已钳制栅极驱动输出
过压、低线路和过流保护功能
可编程电缆补偿 (UCC28710)
带有固定线缆补偿选项的负温度系数 (NTC) 电阻器接口（只适用于 UCC28711，UCC28712 和 UCC28713）
小外形尺寸集成电路 (SOIC)-7 封装
可使用 UCC28710 并借助 WEBENCH® 电源设计器创建定制设计方案

2 应用

用于消费类电子米6体育平台手机版_好二三四的 USB 兼容适配器和充电器
- 智能电话
- 平板电脑
- 摄像机
针对电视和台式机的待机电源
白色家电

3 说明

UCC2871x 系列反激式电源控制器在不使用光耦合器的情况下提供隔离式输出恒压 (CV) 和恒流 (CC) 输出调节。此器件可处理来自主要电源开关和辅助反激式绕组的信息，以对输出电压和电流进行精确控制。

一个内部 700V 启动开关、动态控制的工作状态和一个定制的调制配置文件在不牺牲启动时间或输出瞬态响应的同时支持超低待机功耗。

UCC28710 系列中的控制算法使得运行效率符合或者超过适用标准。输出驱动接至一个 MOSFET 电源开关。带有谷值开关的断续传导模式 (DCM) 减少了开关损耗。开关频率的调制和初级电流峰值振幅 (FM 和 AM) 在整个负载和线路范围内保持较高的转换效率。

此控制器有一个 100kHz 的最大开关频率并且一直保持对变压器内初级峰值电流的控制。保护功能有助于抑制一次侧和二次侧应力分量。UCC28710 支持对线缆补偿进行编程。UCC28711、UCC28712 和 UCC28713 器件在提供固定线缆补偿电平的同时，可使用负温度系数 (NTC) 电阻器实现远程温度感测。

器件信息⁽¹⁾

器件型号	封装	封装尺寸（标称值）
UCC28710	SOIC (7)	4.91mm × 3.90mm
UCC28711
UCC28712
UCC28713

如需了解所有可用封装，请参阅数据表末尾的可订购米6体育平台手机版_好二三四附录。

简化应用

UCC28710 UCC28711 UCC28712 UCC28713 v12200_lusb86.gif

4 修订历史记录

Changes from B Revision (July 2015) to C Revision

Deleted 针对 UCC28714、UCC28715 和 UCC28716 器件的所有参考Go
Deleted “准谐振”中的“准”Go
Added 文档支持、接收文档更新通知以及社区资源 部分Go

Changes from A Revision (December 2014) to B Revision

Updated Layout Guidelines sectionGo

Changes from * Revision (November 2012) to A Revision

Added 引脚配置和功能部分，ESD 额定值表，特性说明 部分，器件功能模式，应用和实施部分，电源相关建议部分，布局部分，器件和文档支持部分以及机械、封装和可订购信息部分Go

5 Device Comparison Table

PART NUMBER⁽¹⁾	MINIMUM SWITCHING FREQUENCY	OPTIONS⁽²⁾
UCC28710	680 Hz	Programmable cable compensation
UCC28711		NTC option, 0-mV (at 5-V output) cable compensation
UCC28712		NTC option, 150-mV (at 5-V output) cable compensation
UCC28713		NTC option, 300-mV (at 5-V output) cable compensation

(1) See 机械、封装和可订购信息 section for specific device ordering information.

(2) For other fixed cable compensation options, call TI.

6 Pin Configuration and Functions

UCC28710 D Package

7-Pin SOIC

Top View

UCC28710 UCC28711 UCC28712 UCC28713 d7_pinout_lusb86.gif

UCC28711, UCC28712, UCC28713 D Package

7-Pin SOIC

Top View

Pin Functions

PIN			I/O	DESCRIPTION
NAME	UCC28710	UCC28711 UCC28712 UCC28713	I/O	DESCRIPTION
CBC	3	—	I	Cable compensation is a programming pin for compensation of cable voltage drop. Cable compensation is programmed with a resistor to GND.
CS	5	5	I	Current sense input connects to a ground-referenced current-sense resistor in series with the power switch. The resulting voltage is used to monitor and control the peak primary current. A series resistor can be added to this pin to compensate the peak switch current levels as the AC-mains input varies.
DRV	6	6	O	Drive is an output used to drive the gate of an external high voltage MOSFET switching transistor.
GND	4	4	—	The ground pin is both the reference pin for the controller and the low-side return for the drive output. Special care should be taken to return all AC decoupling capacitors as close as possible to this pin and avoid any common trace length with analog signal return paths.
HV	7	7	I	The high-voltage pin connects directly to the rectified bulk voltage and provides charge to the VDD capacitor for start-up of the power supply.
NTC	—	3	I	NTC an interface to an external negative temperature coefficient resistor for remote temperature sensing. Pulling this pin low shuts down PWM action.
VDD	1	1	I	VDD is the bias supply input pin to the controller. A carefully-placed bypass capacitor to GND is required on this pin.
VS	2	2	I	Voltage sense is an input used to provide voltage and timing feedback to the controller. This pin is connected to a voltage divider between an auxiliary winding and GND. The value of the upper resistor of this divider is used to program the AC-mains run and stop thresholds and line compensation at the CS pin.