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參數(shù)資料
| 型號(hào)： | UCC3882DW-1 |
| 英文描述： | 5-pin supervisor with watchdog timer and push-button reset |
| 中文描述： | 電流模式開關(guān)電源控制器 |
| 文件頁數(shù)： | 8/19頁 |
| 文件大小： | 296K |
| 代理商： | UCC3882DW-1 |
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
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PDF描述 |
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| UCC3882DWTR | 5-pin supervisor with watchdog timer and push-button reset |
| UCC3882N | 5-pin supervisor with watchdog timer and push-button reset |
| UCC3882N-1 | 5-pin supervisor with watchdog timer and push-button reset |
| UCC3882PW | 5-pin supervisor with watchdog timer and push-button reset |
| UCC3882PW-1 | 5-pin supervisor with watchdog timer and push-button reset |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC3882DW-1G4 | 功能描述:DC/DC 開關(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 |
| UCC3882DWTR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller |
| UCC3882DWTR-1 | 功能描述:DC/DC 開關(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 |
| UCC3882DWTR-1G4 | 功能描述:DC/DC 開關(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 |
| UCC3882N | 制造商:TI 制造商全稱:Texas Instruments 功能描述:AVERAGE CURRENT MODE SYNCHRONOUS CONTROLLER WITH 5-BIT DAC |
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