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参数资料
| 型号： | 5962-88697012A |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 4-CHANNEL POWER SUPPLY SUPPORT CKT, CQCC20 |
| 封装： | CERAMIC, LCC-20 |
| 文件页数： | 16/16页 |
| 文件大小： | 425K |
| 代理商： | 5962-88697012A |
Using The Line/Switcher Sense Output
LINE
INPUT
POWER
TRANSFORMER FILTER
www.ti.com ........................................................................................................................................ SLUS233A – OCTOBER 1999 – REVISED SEPTEMBER 2008
The line switcher sense input to the UC1903 can be used for early detection of line, switcher, or other power
source, failures. Internally referenced to 2.0 V, the line sense comparator will cause the POWER OK output to
indicate a fault (active low) condition when the LINE/SWITCHER SENSE input goes from above to below 2.0 V.
The line sense comparator has approximately 175 mV of hysteresis requiring the line/switcher input to reach
2.175 V before the POWER OK output device can be turned off, allowing a no-fault indication. In Figure 7 an
example showing the use of the LINE/SWITCHER SENSE input for early switcher-fault detection is detailed. A
sample signal is taken from the output of the power transformer, rectified and filtered, and used at the
line/switcher input. By adjusting the R2C time constant with respect to the switching frequency of the supply and
the hold up time of the output capacitor, switcher faults can be detected before supply outputs are significantly
affected.
Figure 7. Line/Switcher Sense Input Used for Early Line or Switcher Fault Indication
Copyright 1999–2008, Texas Instruments Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 59628869701VA | 制造商:n/a 功能描述:UC1903J/883BC |
| 5962-8869701VA | 制造商:Texas Instruments 功能描述:Volt Supervisor Monitor 18-Pin CDIP Tube 制造商:Texas Instruments 功能描述:VOLT SUPERVISOR MONITOR 18CDIP - Rail/Tube |
| 5962-8869801EA | 制造商:Texas Instruments 功能描述:Counter Single 4-Bit Binary UP/Down 16-Pin CDIP Tube 制造商:Texas Instruments 功能描述:COUNTER SGL 4BIT BINARY UP/DOWN 16CDIP - Rail/Tube |
| 5962-88699013A | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 5962-8869901XA | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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