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| 型號(hào)： | V62/04752-01XE |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3 A SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | GREEN, PLASTIC, SOIC-28 |
| 文件頁(yè)數(shù)： | 5/15頁(yè) |
| 文件大?。?/td> | 389K |
| 代理商： | V62/04752-01XE |
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UC2875EP
PHASE SHIFT RESONANT CONTROLLER
SGLS233A FEBRUARY 2004 REVISED DECEMBER 2008
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION AND OPERATION INFORMATION
Fault/Soft-Start
The fault control circuitry provides two forms of power shutdown:
D Complete turn-off of all four output power stages.
D Clamping the phase shift command to zero.
Complete turn-off is ordered for an over-current fault or a low supply voltage. When the SOFTSTART pin
reaches its low threshold, switching is allowed to proceed while the phase-shift is advanced from zero to its
nominal value with the time constant of the SOFTSTART capacitor.
The fault logic insures that a continuous fault will institute a low frequency “hiccup” retry cycle by forcing the
SOFTSTART capacitor to charge through its full cycle between each restart attempt.
Figure 9. Fault/Soft-Start
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