參數(shù)資料
型號(hào): DRV401AIRGWRG4
廠商: TEXAS INSTRUMENTS INC
元件分類(lèi): 模擬信號(hào)調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, PQCC20
封裝: 5 X 5 MM, GREEN, PLASTIC, QFN-20
文件頁(yè)數(shù): 13/36頁(yè)
文件大?。?/td> 963K
代理商: DRV401AIRGWRG4
DRV401
SBVS070B JUNE 2006 REVISED MAY 2009
www.ti.com
20
a) Demagnetization cycle on power-up. With power-up, the VOUT across the compensation coil centers around half the supply and then
starts the cycle after the 4V threshold is exceeded. The ERROR flag resets to H after the cycle is completed.
d) Abort of demagnetization cycle. The ERROR flag resets to H (as shown) and the output settles back to normal opera-
tion.
b) Power-up without demagnetization. The probe oscillation V(IS1)
starts just before ERROR resets—15
s after the supply voltage cross-
es the 4V threshold.
c) Demagnetization cycle on command.
20ms/div
5V
/d
iv
1
4
2
3
2V
/d
iv
R
SH =10
V
DD1
V(I
COMP2)
V
OUT
V(ERROR)
106ms
20ms/div
5V
/d
iv
1
4
2V
/d
iv
V
DD1
V(ERROR)
2
V(IS1)
3
V(I
COMP2)
42
s
Initial setting upon
closing of feedback loop.
20ms/div
5V
/d
iv
1
4
2
3
2V
/d
iv
V(DEMAG)
V(I
COMP2)
V
OUT
V(ERROR)
106ms
R
SH =10
500
s/div
5V
/d
iv
1
4
2
3
2V
/d
iv
R
SH =10
V(DEMAG)
V(I
COMP2)
V
OUT
V(ERROR)
3.4ms
Figure 7. Demagnetization and Power-On Timing
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