參數(shù)資料
型號(hào)： X80012Q32I
廠商： INTERSIL CORP
元件分類： 電源管理
英文描述： 14 STR PE BLK RoHS Compliant: Yes
中文描述： 5-CHANNEL POWER SUPPLY SUPPORT CKT, QCC32
封裝： 7 X 7 MM, 0.65 MM PITCH, QFN-32
文件頁(yè)數(shù)： 19/25頁(yè)
文件大?。?/td> 548K
代理商： X80012Q32I
19
FN8149.0
January 13, 2005
Quad Voltage Monitoring
X80010 monitors 4 voltage enable inputs. When the ENi
(i=1-4) input is detected to be below the input threshold, the
output ViGOOD (i = 1 to 4) goes active LOW. The ViGOOD
signal is asserted after a delay of 100ms. The ViGOOD
signal remains active until ENi rises above threshold.
Once the PWRGD signal is asserted, the power sequencing
of the DC/DC modules can commence. RESET goes active
100ms after all ViGOOD (i=1 to 4) outputs are asserted (See
Figure 39).
As shown in Figure 40, this circuit block contains four
separate voltage enable pins, a time delay circuit, and an
output driver.
Control
Registers
RESET Logic
t
SPOR
Delay
SPOR
MRC
V
DD
Drain Sense
& Power
Good Logic
Enable
Logic
RESET
PWRGD
ViGOOD
i = 1 to 4
μ
P
V
EE
FIGURE 39. POWER ON/SYSTEM RESET AND DELAY
EN1
EN2
EN3
EN4
V4GOOD
V3GOOD
V2GOOD
V1GOOD
V
EE
Divider
Reset
4
OSC
0.1s
0.5s
1s
5s
Select
4
delay1
delay2
delay3
delay4
Delay circuit
repeated 4 times
V
RGO
Control Register
FIGURE 40. VOLTAGE MONITORS AND VGOOD OUTPUTS
X80010, X80011, X80012, X80013
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