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参数资料
| 型号： | UCC380001PW |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | Negative voltage regulators |
| 中文描述： | 模拟IC |
| 文件页数： | 8/19页 |
| 文件大小： | 296K |
| 代理商： | UCC380001PW |
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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| UCC380001PWTR | Negative voltage regulators |
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相关代理商/技术参数 |
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|---|---|
| UCC380001PWTR | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| UCC380002D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| UCC380002DTR | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| UCC380002J | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| UCC380002N | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
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