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參數(shù)資料
| 型號(hào)： | PKF4111ASI |
| 廠商： | ERICSSON POWER MODULES AB |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 10 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | 8 MM HEIGHT, POWER, MODULE-18 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 290K |
| 代理商： | PKF4111ASI |
6
EN/LZT 146 87 R1A Ericsson Microelectronics AB, December 2001
Figure 2
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. 2).
The resistance is given by the following equation
(For VIon>36V):
RIon = (2780 – VIon)/(VIon – 36.0) k
W
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. 2). The resistance is given by the following
equation (for 34.5 V<VIon >36 V):
RIon = 49 × (VIon – 32.0)/(36.0 – VIon) k
W
EFT
Electrical Fast Transients on the input terminals could affect the
output voltage regulation causing functional errors on the Printed
Board Assembly (PBA). The PKF power modules withstand EFT
levels of 0.5 kV keeping VO within the tolerance band and
2.0 kV without destruction. Tested according to IEC publ. 801-4.
Operating Information
Remote Control (RC)
Turn-on or turn-off can be realized by using the RC-pin. If pin 11
is connected to pin 17 the power modules turns off. Normal
operation is achieved if pin 11 is open (NC). To ensure safe turn-off
the voltage difference between pin 11 and 17 shall be less than
1.0 V. RC is an open collector compatible input. A sink capacity of
1mA is needed. (see fig.1).
Figure 1
Radiated EMS (Electro-Magnetic Fields)
Radiated EMS is measured according to test methods in
IEC Standard publ. 801-3. No deviation outside the VO tolerance
band will occur under the following conditions:
Frequency range
Voltage level
0.01...200 MHz
3 Vrms/m
200...1,000 MHz
3 Vrms/m
1...12 GHz
10 Vrms/m
Fuse Considerations
To prevent excessive current from flowing through the input
supply line, in the case of a short-circuit across the converter input,
an external fuse should be installed in the non-earthed input
supply line. We recommend using a fuse rated at approximately 2
to 4 times the value calculated in the formula below:
Refer to the fuse manufacturer for further information.
POmax
(
hmin × VImin)
Iinmax =
Output Ripple & Noise (VOac)
Output ripple is measured as the peak to peak voltage of the fun-
damental switching frequency.
Test
Voltage level
Air discharge
±4 kV
Contact discharge
±2 kV
ESD
Electro Static Discharge is tested according to IEC publ. 801-2.
No destruction will occur if the following voltage levels are applied
to any of the terminal pins:
Frequency range
Voltage level
0.15...300 MHz
1.0 Vrms
The signal is amplitude modulated with 1 kHz/80% and applied
in both differential and common mode.
Conducted EMS
Electro Magnetic Susceptibility is measured by injection of electri-
cal disturbances on the input terminals. No deviation outside the
VO tolerance band will occur under the following conditions:
PKF 4111A with filter.
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