最新免费av在线观看,亚洲综合一区成人在线,中文字幕精品无码一区二区三区,中文人妻av高清一区二区,中文字幕乱偷无码av先锋

UCC28220 Datasheet

  • UCC28220

  • 具有可編程最大占空比的雙路交錯 PWM 控制器

  • 28頁

  • TI

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

UCC28220, UCC28221
SLUS544A 鈭?SEPTEMBER 2003 鈭?REVISED AUGUST 2004
APPLICATION INFORMATION
VDD
13 V
8 鈭?14 V
10 V
NORMAL OPERATION
8 V (UVLO off)
13 V
0V
OUTx
GATE DRV
OFF
ON
HV JFET
ON
OFF
Figure 3. JFET Device Operation with VDD Voltage
Soft-Start
A current is forced out of the SS pin, equal to 3/7 of the current set by R
CHG
, to provide a controlled ramp voltage.
The current set by the R
CHG
resistor is equal to 2.5 V divided by R
CHG
. This ramp voltage overrides the
commanded duty cycle on the CTRL pin, allowing a controlled start-up. Assuming the UCC28221 is biased on
the primary side, the soft start should be quite quick to allow the secondary bias to be generated and the
secondary side control can then take over. Once the soft-start time interval is complete, a closed loop soft-start
on the secondary side can be executed.
ISS
+
3
7
where,
ISS = current which is sourced out of the SS pin during the soft-start time 鈭?[Amps]
2.5
R
CHG
(9)
Current Sense
The current sense signals CS1 and CS2 are level shifted by 0.5 V and have the slope compensation ramps
added to them before being compared to the control voltage at the input of the PMW comparators. The
amplitude of the current sense signal at full load should be selected such that it is very close to the maximum
control voltage in order to limit the peak output current during short circuit operation.
Output Drivers
The UCC28220/1 is intended to interface with the UCC27323/4/5 family of MOSFET drivers. As such, the output
drive capability is low, effectively 100
鈩?/div>
and the driver outputs swing between GND and REF.
12
www.ti.com

UCC28220 PDF文件相關(guān)型號

UCC28221

UCC28220相關(guān)型號PDF文件下載

  • 型號
    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

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！