- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄376444 > X80001Q32I (INTERSIL CORP) Smart Power Plug Penta-Power Sequence Controller with Hot Swap PDF資料下載
參數(shù)資料
| 型號(hào)： | X80001Q32I |
| 廠商： | INTERSIL CORP |
| 元件分類(lèi)： | 電源管理 |
| 英文描述： | Smart Power Plug Penta-Power Sequence Controller with Hot Swap |
| 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)： | 17/37頁(yè) |
| 文件大?。?/td> | 695K |
| 代理商： | X80001Q32I |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)當(dāng)前第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)
17
FN8148.0
March 18, 2005
Overvoltage and Undervoltage Shutdown
The X80000 provides overvoltage and undervoltage
protection circuits.
When an overvoltage (V
OV
) or undervoltage (V
UV1
and
V
UV2
) condition is detected, the GATE pin will be
immediately pulled low. The undervoltage threshold V
UV1
applies to the normal operation with a main supply. The
undervoltage threshold V
UV2
assumes the system is
powered by a battery. When using a battery backup, the
BATT-ON pin is pulled to V
RGO
. The default thresholds have
been set so the external resistance values determine the
overvoltage threshold, a main undervoltage threshold and a
battery undervoltage threshold.
As shown in Figure 26, this circuit block contains
comparators and programmable voltage references to
monitor the single overvoltage and dual undervoltage trip
points. During manufacturing, Intersil programmed the
overvoltage and undervoltage trip points as shown in Table 1
below. Custom values are possible.
A resistor divider connected between the plus and minus
input voltages and the V
UV/OV
pin (see Figure 24)
determines the overvoltage and undervoltage shutdown
voltages and the operating voltage range. Using the
thresholds in Table 1 and the equations of Figure 24 the
desired operating voltage can be determined. Figure 25
shows the resistance values for various operating voltages.
Battery Back Up Operations
An external signal, BATT-ON, is provided to switch the
undervoltage trip point. The BATT-ON signal is a LOGIC
HIGH if V
IHB
> V
EE
+ 4V and is a LOGIC LOW if V
ILB
< V
EE
+ 2V. The time from a BATT-ON input change to a valid new
undervoltage threshold is 100ns. See Electrical
Specifications for more details.
Note: The V
UV/OV
pin must be limited to less than V
EE
+
5.5V in worst case conditions. Values for R1 and R2 must be
chosen such that this condition is met. Intersil recommends
R1 = 182k
and R2 = 10k
to conform to factory settings.
Overvoltage/Undervoltage Fault Condition Flags
On any overvoltage or undervoltage violation, the X80000
cuts-off the GATE. This condition also sets the fault-
overvoltage (FOV) or fault-undervoltage1/2 (FUV1/2) bits
low. These bits are readable through the SMBus. To clear
the fault bits, the fault condition must first be rectified (by the
TABLE 1. OVERVOLTAGE/UNDERVOLTAGE DEFAULT
THRESHOLDS
THRESHOLD
SYMBOL
DESCRIPTION
FALLING
RISING
MAX/MIN
VOLTAGE
(Note 1)
LOCKOUT
VOLTAGE
(Note 2)
V
OV
Overvoltage
(X80000)
3.87V
3.9V
74.3
74.9
V
OV
Overvoltage
(X80001)
3.51V
3.54V
67.4
68
V
UV1
Undervoltage
1
2.21V
2.24V
43.0
42.4
V
UV2
Undervoltage
2
1.73V
1.76V
33.8
33.2
NOTES:
1. Max/Min Voltage is the maximum and minimum operating voltage
assuming the recommended V
UV/OV
resistor divider.
2. Lockout voltage is the voltage where the X80000/1 turns off the
FET.
TABLE 2. SELECTING BETWEEN UNDERVOLTAGE TRIP
POINTS
PIN
DESCRIPTION
TRIP POINT SELECTION
BATT-ON
Undervoltage Trip
Point Selection Pin
If BATT-ON = 0,
V
UV1
trip point is selected;
If BATT-ON = 1,
V
UV2
trip point is selected.
V
UV1
and V
UV2
are undervoltage thresholds.
R1
R2
V
P
V
UV/OV
V
N
Voltage divider:
or:
V
UV OV
V
S
R2
----------+
=
V
S
V
UV OV
----------+
=
V
S
FIGURE 24. OVERVOLTAGE UNDERVOLTAGE DIVIDER
BATT-ON = V
EE
V
OV
V
UV1
V
UV2
Operating
Voltage
BATT-ON = V
RGO
100
90
80
70
60
50
40
30
20
10
0
1
1
1
1
1
1
1
2
2
2
O
R1 in k
(for R2=10K)
FIGURE 25. OPERATING VOLTAGE vs RESISTOR RATIO
X80000, X80001
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X80000Q32I | Smart Power Plug Penta-Power Sequence Controller with Hot Swap |
| X80000 | Smart Power Plug Penta-Power Sequence Controller with Hot Swap |
| X80001 | Smart Power Plug Penta-Power Sequence Controller with Hot Swap |
| X80012Q32I | 14 STR PE BLK RoHS Compliant: Yes |
| X80010Q32I | Penta-Power Sequence Controller with Hot swap and System Management |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X80010 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Penta-Power Sequence Controller with Hot swap and System Management |
| X80-01-01 | 制造商:MOFLASH SIGNALLING 功能描述:XENON BEACON,AMB,SMALL |
| X80010Q32I | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Penta-Power Sequence Controller with Hot swap and System Management |
| X80011 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Penta-Power Sequence Controller with Hot swap and System Management |
| X80011Q32I | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Penta-Power Sequence Controller with Hot swap and System Management |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。