UCC27221 高效预测同步降压驱动器

	UCC27221
No. of Outputs	2
Driver Configuration	Inverting, Non-Inverting
VCC(Min)(V)	3.7
VCC(Max)(V)	20
Peak Output Current(A)	3
Rise Time(ns)	17
Fall Time(ns)	17
Prop Delay(ns)	60
Input Threshold	TTL
Pin/Package	14HTSSOP
Rating	Catalog
Operating Temperature Range(°C)	-40 to 105

UCC27221 描述

The UCC27221 and UCC27222 are high-speed synchronous buck drivers for today’s high-efficiency, lower-output voltage designs. Using Predictive Gate DriveTM (PGD) control technology, these drivers reduce diode conduction and reverse recovery losses in the synchronous rectifier MOSFET(s). The UCC27221 has an inverted PWM input while the UCC27222 has a non-inverting PWM input.

Predictive Gate DriveTM technology uses control loops which are stabilized internally and are therefore transparent to the user. These loops use no external components, so no additional design is needed to take advantage of the higher efficiency of these drivers.

This closed loop feedback system detects body-diode conduction, and adjusts deadtime delays to minimize the conduction time interval.

UCC27221 特性

• Maximizes Efficiency by Minimizing Body-Diode Conduction and Reverse Recovery Losses
• Transparent Synchronous Buck Gate Drive Operation From the Single Ended PWM Input Signal
• 12-V or 5-V Input Operation
• 3.3-V Input Operation With Availability of 12-V Bus Bias
• High-Side and Low-Side ±3-A Dual Drivers
• On-Board 6.5-V Gate Drive Regulator
• ±3.3-A TrueDriveTM Gate Drives for High Current Delivery at MOSFET Miller Thresholds
• Automatically Adjusts for Changing Operating Conditions
• Thermally Enhanced 14-Pins PowerPADTM HTSSOP Package Minimizes Board Area and Junction Temperature Rise
• APPLICATIONS
  • Non-Isolated Single or Multi-phased DC-to-DC Converters for Processor Power, General Computer, Telecom and Datacom Applications

UCC27221 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
UCC27221PWP	ACTIVE	-40 to 105	1.70 | 1ku	HTSSOP (PWP) | 14	90 | TUBE	27221
UCC27221PWPG4	ACTIVE	-40 to 105	1.70 | 1ku	HTSSOP (PWP) | 14	90 | TUBE	27221
UCC27221PWPR	ACTIVE	-40 to 105	1.75 | 1ku	HTSSOP (PWP) | 14	2000 | LARGE T&R	27221
UCC27221PWPRG4	ACTIVE	-40 to 105	1.75 | 1ku	HTSSOP (PWP) | 14	2000 | LARGE T&R	27221

UCC27221 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
UCC27221PWP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		UCC27221PWP
UCC27221PWPG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	UCC27221PWPG4	UCC27221PWPG4
UCC27221PWPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		UCC27221PWPR
UCC27221PWPRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	UCC27221PWPRG4	UCC27221PWPRG4

UCC27221 应用技术支持与电子电路设计开发资源下载

1. UCC27221 数据资料 dataSheet 下载.PDF
2. TI 德州仪器AC/DC 和 DC/DC 电源产品选型与价格参考 . xls
3. Dual MOSFET Driver (PDF 498 KB)
4. 标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
5. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
6. 所选封装材料的热学和电学性质 (PDF 645 KB)
7. 高速数据转换 (PDF 1967 KB)
8. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
9. Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
10. Principles of Data Acquisition and Conversion (PDF 50 KB)
11. Interleaving Analog-to-Digital Converters (PDF 64 KB)
12. What Designers Should Know About Data Converter Drift (PDF 95 KB)
13. Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
14. Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)

UCC27221 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
UCC27221 评估模块	UCC27221EVM	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