音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

UCC27221PWP Datasheet

  • UCC27221PWP

  • HIGH EFFICIENCY PREDICTIVE SYNCHRONOUS BUCK DRIVER

  • 486.41KB

  • 27頁(yè)

  • TI

掃碼查看芯片數(shù)據(jù)手冊(cè)

上傳產(chǎn)品規(guī)格書(shū)

PDF預(yù)覽

UCC27221
UCC27222
SLUS486B 鈭?AUGUST 2001 鈭?REVISED JULY 2003
HIGH EFFICIENCY PREDICTIVE SYNCHRONOUS BUCK DRIVER
FEATURES
D
Maximizes Efficiency by Minimizing
D
D
D
D
D
D
D
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
On-Board 6.5-V Gate Drive Regulator
鹵3.3-A
TrueDrive錚?Gate Drives for High
Current Delivery at MOSFET Miller
Thresholds
Automatically Adjusts for Changing
Operating Conditions
Thermally Enhanced 14-Pin PowerPAD錚?/div>
HTSSOP Package Minimizes Board Area and
Junction Temperature Rise
APPLICATIONS
D
Non-Isolated Single or Multi-phased
DC-to-DC Converters for Processor Power,
General Computer, Telecom and Datacom
Applications
DESCRIPTION
The UCC27221 and UCC27222 are high-speed
synchronous
buck
drivers
for
today鈥檚
high-efficiency, lower-output voltage designs.
Using Predictive Gate Drivet (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 Drivet 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.
This virtually eliminates body-diode conduction
while adjusting for temperature, load- dependent
delays, and for different MOSFETs. Precise gate
timing at the nanosecond level reduces the
reverse recovery time of the synchronous rectifier
MOSFET body-diode, reducing reverse recovery
losses seen in the main (high-side) MOSFET. The
lower junction temperature in the low-side
MOSFET increases product reliability. Since the
power dissipation is minimized, a higher switching
frequency can also be used, allowing for smaller
component sizes.
The UCC27221 and UCC27222 are offered in the
thermally enhanced 14-pin PowerPADt package
with 2擄C/W
胃
jc
.
FUNCTIONAL APPLICATION DIAGRAM
VIN
UCC27222
7
PWMIN
6,8 GND
G1
13
IN
VHI
14
3
VDD
SW 11,12
VOUT
4,5 VLO
G2
9,10
GNDOUT
GNDIN
Note: 12-V input system shown. For 5-V input only systems, see Figure 6.
Predictive Gate Drivet and PowerPADt are trademarks of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
錚?/div>
2002, Texas Instruments Incorporated
www.ti.com
1

UCC27221PWP 產(chǎn)品屬性

  • 90

  • 集成電路 (IC)

  • PMIC - MOSFET，電橋驅(qū)動(dòng)器 - 外部開(kāi)關(guān)

  • -

  • 高端和低端，同步

  • 反相

  • 48ns

  • 3.3A

  • 1

  • 2

  • -

  • 3.7 V ~ 20 V

  • -40°C ~ 105°C

  • 表面貼裝

  • 14-TSSOP （0.173"，4.40mm 寬）裸露焊盤(pán)

  • 14-HTSSOP

  • 管件

  • 296-14216-5

UCC27221PWP相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
    版本
    描述
    廠商
    下載
  • 英文版
    Low Dropout 3 Ampere Linear Regulator Family
    TI
  • 英文版
    Low Dropout 3 Ampere Linear Regulator Family
    TI [Texas ...
  • 英文版
    Low Dropout 1 Ampere Linear Regulator Family
    TI [Texas ...
  • 英文版
    Low Dropout 0.5A Negative Linear Regulator
    TI [Texas ...
  • 英文版
    HID Lamp Controller
    TI
  • 英文版
    HID Lamp Controller
    TI [Texas ...
  • 英文版
    HIGH EFFICIENCY SECONDARY SIDE SYNCHRONOUS BUCK PWM CONTROLL...
    TI
  • 英文版
    HIGH EFFICIENCY SECONDARY SIDE SYNCHRONOUS BUCK PWM CONTROLL...
    TI [Texas ...
  • 英文版
    HIGH-EFFICIENCY SYNCHRONOUS BUCK PWM CONTROLLER
    TI [Texas ...
  • 英文版
    Low Power Pulse Width Modulator
    TI
  • 英文版
    Low Power Pulse Width Modulator
    TI [Texas ...
  • 英文版
    Micropower Voltage Mode PWM
    TI
  • 英文版
    Micropower Voltage Mode PWM
    TI [Texas ...
  • 英文版
    Switch Mode Secondary Side Post Regulator
    TI
  • 英文版
    Switch Mode Secondary Side Post Regulator
    TI [Texas ...
  • 英文版
    Low Voltage Synchronous Buck Controller
    TI
  • 英文版
    Low Voltage Synchronous Buck Controller
    TI [Texas ...
  • 英文版
    Brushless DC Motor Controller
    TI
  • 英文版
    Brushless DC Motor Controller
    TI [Texas ...
  • 英文版
    Source Ringer Controller
    TI

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時(shí)間周一至周五
9:00-17:30

關(guān)注官方微信號(hào)，
第一時(shí)間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫(kù)提出的寶貴意見(jiàn)，您的參與是維庫(kù)提升服務(wù)的動(dòng)力！意見(jiàn)一經(jīng)采納，將有感恩紅包奉上哦！