UCC28221 具有可编程最大占空比的双路交错 PWM 控制器

	UCC28221
Topology	Flyback, Forward
Control Method	Current Mode
Duty Cycle(Max)(%)	90
Frequency(Max)(kHz)	2000
UVLO Thresholds On/Off(V)	13.0/8.0
Pin/Package	16SOIC, 20TSSOP
Regulated Outputs(#)	2
Operating Temperature Range(°C)	-40 to 105
Rating	Catalog

UCC28221 描述

The UCC28220 and UCC28221 are a family of BiCMOS interleaved dual channel PWM controllers. Peak current mode control is used to ensure current sharing between the two channels. A precise maximum duty cycle clamp can be set to any value between 60% and 90% duty cycle per channel.

UCC28221 has an UVLO turn-on threshold of 10 V for use in 12-V supplies while UCC28221 has a turn-on threshold of 13 V for systems needing wider UVLO hysteresis. Both have 8-V turn-off thresholds.

Additional features include a programmable internal slope compensation with a special circuit which is used to ensure exactly the same slope is added to each channel and a high voltage 110-V internal JFET for easier startup for the wider hysteresis UCC28221 version.

UCC28221 特性

2-MHz High Frequency Oscillator with 1-MHz Operation Per Channel
Matched Internal Slope Compensation Circuits
Programmable Maximum Duty Cycle Clamp 60% to 90% Per Channel
Peak Current Mode Control with Cycle-by-Cycle Current Limit
Current Sense Discharge Transistor for Improved Noise Immunity
Accurate Line Under and Over-Voltage Sense with Programmable Hysteresis
Opto-Coupler Interface
110-V Internal Start-Up JFET (UCC28220)
Operates from 12-V Supply (UCC28221)
Programmable Soft-Start
APPLICATIONS
- High Output Current (50-A to 100-A) Converters
- Maximum Power Density Designs
- High Efficiency 48-V Input with Low Output Ripple Converters
- High Power Offline, Telecom and Datacom Power Supplies

UCC28221 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 \| 引脚	封装数量 \| 封装载体	丝印标记
UCC28221D	ACTIVE	-40 to 105	1.85 \| 1ku	SOIC (D) \| 16	40 \| TUBE	28221
UCC28221DG4	ACTIVE	-40 to 105	1.85 \| 1ku	SOIC (D) \| 16	40 \| TUBE	28221
UCC28221DR	ACTIVE	-40 to 105	1.70 \| 1ku	SOIC (D) \| 16	2500 \| LARGE T&R	28221
UCC28221DRG4	ACTIVE	-40 to 105	1.70 \| 1ku	SOIC (D) \| 16	2500 \| LARGE T&R	28221
UCC28221PW	ACTIVE	-40 to 105	2.20 \| 1ku	TSSOP (PW) \| 20	90 \| TUBE	28221
UCC28221PWG4	ACTIVE	-40 to 105	2.20 \| 1ku	TSSOP (PW) \| 20	90 \| TUBE	28221
UCC28221PWR	ACTIVE	-40 to 105	1.70 \| 1ku	TSSOP (PW) \| 20	2000 \| LARGE T&R	28221
UCC28221PWRG4	ACTIVE	-40 to 105	1.70 \| 1ku	TSSOP (PW) \| 20	2000 \| LARGE T&R	28221

UCC28221 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
UCC28221D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		UCC28221D
UCC28221DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	UCC28221DG4	UCC28221DG4
UCC28221DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		UCC28221DR
UCC28221DRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	UCC28221DRG4	UCC28221DRG4
UCC28221PW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		UCC28221PW
UCC28221PWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	UCC28221PWG4	UCC28221PWG4
UCC28221PWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		UCC28221PWR
UCC28221PWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	UCC28221PWRG4	UCC28221PWRG4

UCC28221 应用技术支持与电子电路设计开发资源下载

UCC28221 数据资料 dataSheet 下载.PDF
TI 德州仪器AC/DC 和 DC/DC 电源产品选型与价格参考 . xls
Dual MOSFET Driver (PDF 498 KB)
标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
所选封装材料的热学和电学性质 (PDF 645 KB)
高速数据转换 (PDF 1967 KB)
Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
Principles of Data Acquisition and Conversion (PDF 50 KB)
Interleaving Analog-to-Digital Converters (PDF 64 KB)
What Designers Should Know About Data Converter Drift (PDF 95 KB)
Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)

UCC28221 工具与软件

名称	型号	公司	工具/软件类型
音频的快速搜索选择工具	AUDIO_SELECTION_TOOL	Texas Instruments	免费评估工具
UCC28221 200W 评估模块	UCC28221EVM	Texas Instruments	开发电路板/EVM
UCC28528 评估模块	UCC28528EVM	Texas Instruments	开发电路板/EVM
UCC28221 MathCAD 计算实用程序	UCC28221-CALC	Texas Instruments	计算实用程序
UCC28220 评估模块	UCC28220EVM	Texas Instruments	开发电路板/EVM
用于音频转换器的软件驱动程序	CODECDRIVERS-SW	Texas Instruments	应用软件