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參數(shù)資料
| 型號(hào)： | UCC81510DP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Transition-mode PFC controller |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 196K |
| 代理商： | UCC81510DP |
SLUS457B – JULY 2000 - REVISED OCTOBER 2000
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 3
REVERSE VOLTAGE COMPARATOR
RESPONSE TIME
VIN
0 A
1 A
2 A
3 A
4 A
C
OUT
= 22 F
R
LOAD
= 5
C
IN
= 5 F
R
IFAULT
= 52.3 k
R
IMAX
= 42.0 k
I
IN
Figure 4
FAULT TIMING WAVEFORMS
V
OUT
= 0 V
R
LOAD
= SHORT
C
IN
= 5 F
R
IFAULT
= 52.3 k
R
IMAX
= 42.2 k
OUTPUT CURRENT
C
T
(0.1 F)
FAULT OUT
NOTE: In Figure 3 the input driven with a pulse generator shows COUT discharging through RL and conducting through UCC81510 FET in the
reverse direction.
Figure 5
INRUSH CURRENT LIMITING
V
OUT
I
INPUT
@ 0.5 A/DIV
0 V
0 A
C
OUT
= 22 F
R
LOAD
= 5
C
IN
= 5 F
R
IFAULT
= 52.3 k
R
IMAX
= 60.4 k
Figure 6
FAULT AND OUTPUT TURN-OFF
DELAY FROM CT FAULT
THRESHOLD
C
OUT
= 0 F
R
LOAD
= 5
C
IN
= 5 F
C
T
= OPEN
R
IFAULT
= 52.3 k
R
IMAX
= 42.4 k
FAULT OUT
C
T
VOUT
I
OUT
(R
LOAD
= 5 )
NOTE: In Figure 5 the input is switched on through the external FET. VOUT shows IMAX linear amplifier limiting the changing current to COUT.
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