參數(shù)資料
型號(hào)： UCC3882PW
英文描述： 5-pin supervisor with watchdog timer and push-button reset
中文描述： 電流模式開(kāi)關(guān)電源控制器
文件頁(yè)數(shù)： 8/19頁(yè)
文件大?。?/td> 296K
代理商： UCC3882PW
SLUS458C AUGUST 2001 REVISED SEPTEMBER 2003
8
www.ti.com
APPLICATION INFORMATION
oscillator synchronization
The UCC38C4x oscillator has the same synchronization characteristics as the original bipolar devices. Thus,
the information in the Application Note U100A
, UC3842/3/4/5 Provides Low-Cost Current-Mode Contro
l, (TI
Literature No. SLUA143) still applies. The application note describes how a small resistor from the timing
capacitor-to-ground can offer an insertion point for synchronization to an external clock, (see Figures 2 and 3).
Figure 2 shows how the UCC38C42 can be synchronized to an external clock source. This allows precise
control of frequency and dead time with a digital pulse train.
UDG01069
8
4
VREF
RT/ CT
UCC38C42
PWM
RT
CT
24
SYNCHRONIZATION
CIRCUIT INPUT
Figure 2. Oscillator Synchronization Circuit
ON
.
LOW
LOW
HIGH
ON
.
OFF
.
CLOCK
INPUT
PWM
OUT
UPPER THRESHOLD
LOWER THRESHOLD
OUTPUT A
COMBINED
UPPER THRESHOLD
LOWER THRESHOLD
V
CT
V
CT
(ANALOG)
V
SYNC
(DIGITAL)
UDG01070
Figure 3. Synchronization to an External Clock
相關(guān)PDF資料
PDF描述
UCC3882PW-1 5-pin supervisor with watchdog timer and push-button reset
UCC3882PWTR 5-pin supervisor with watchdog timer and push-button reset
UCC3884D 5-pin supervisor with watchdog timer and push-button reset
UCC3888D Voltage-Mode SMPS Controller
UCC3888DTR Voltage-Mode SMPS Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UCC3882PW-1 制造商:Rochester Electronics LLC 功能描述:AVG CUR MODE SYNCH CONT W/ 5-BIT DAC - Bulk
UCC3882PWG4 功能描述:DC/DC 開(kāi)關(guān)控制器 Avg Crnt Mode Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
UCC3882PWTR 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller
UCC3882PWTR/81484 功能描述:IC CTRLR INTEL VID 28TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR)
UCC3882PWTR-1 功能描述:DC/DC 開(kāi)關(guān)控制器 Avg Crnt Mode Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
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