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參數(shù)資料
| 型號： | PKF4111API |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 10 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 1528K |
| 代理商： | PKF4111API |
12
EN/LZT 146 30 R2A Ericsson Microelectronics AB, October 2000
Figure 2
Over Voltage Protection (OVP)
The remote control can also be utilized for OVP by using the exter-
nal circuitry in figure 2. Resistor values are for 5 V output applica-
tions, but can easily be adjusted for other output voltages and the
desired OVP level.
Output Voltage Adjust (Vadj)
Output voltage, VO, can be adjusted by using an external resistor or
other external circuitry. If other circuitry is used, the slew rate has to
be limited to maximum 5 V/ms. If pins 8 and 9 are not connected
together the output will decrease to a low value. To increase VO a
resistor should be connected between pin 8/9 and 17, and to decrease
VO a resistor should be connected between pin 8 and 9 (see fig. 4).
Figure 4
Typical required resistor value to increase VO is given by:
Radj = k5 × (k6 – VO)/(VO – VOi) k
W
where
VO is the desired output voltage,
VOi is the typical output voltage initial setting
andk5=3.18
k6=3.87
PKF 4610A
k5=4.20
k6=6.39
PKF 4111A*)
k5=4.20
k6=4.13
PKF 4910A
Typical required resistor value to decrease VO is given by:
Radj = k7 × (VOi – VO)/(VO – k8) k
W
where k7=17.20
k8=1.73
PKF 4610A
k7=18.0
k8=2.62
PKF 4111A*)
k7=17.60
k8=1.75
PKF 4910A
PKF 4610A: The following typical resistor values can be used to
adjust the output voltage to 1.8 V or 2.5 V. For more information
on temperature dependence see fig. 5.
Output voltage
tolerance band
Rodnom (
W)
Standard values E24 (
W)
2.5 V ± 4%
17.8 k
20 k//160 k 1% 200 ppm
1.8 V ± 4%
360 k
1% 200 ppm
Max output current vs case temperature for ±4% tolerance band
at different output voltages.
Figure 5
PKF 4910A: The following typical resistor values can be used to
adjust the output voltage to 1.8 V or 2.5 V.
Output voltage
tolerance band
Rodnom (
W)
Standard values E24 (
W)
2.5 V ± 4%
19.4 k
33 k//47 k 1% 200 ppm
1.8 V ± 4%
500 k
1M//1M
1% 200 ppm
*) This formula is valid for PKF 4111A Rev. 3B and above, for prior
revision index, please contact the factory.
Figure 3
Turn-on/off Input Voltage
The power module monitors the input voltage and will turn on and
turn off at predetermined levels set by means of external resistors.
To increase VIon a resistor should be connected between pin 11 and
17 (see fig. 3).
The resistance is given by the following equation
(For VIon>37 V):
RIon = (k1 – VIon)/(VIon – k2) k
W
where k2 is the typical unadjusted turn-on input voltage (V).
VIoff is the adjusted turn-off input voltage and is determined by
VIon –VIoff = 2 V (typical value).
To decrease VIon a resistor should be connected between pin 10 and
11 (see fig. 3). The resistance is given by the following equation (for
34.5 V < VIon > 36 V:
RIon = k3 × (VIon – k4)/(k2 – VIon) k
W
k1
k2
k3
k4
2780
36.0
49
32.0
PKF 4610A, PKF 4910A
PKF 4111A*)
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| PKF4111ASI | 制造商:Ericsson 功能描述:MODULE EOL310305 |
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