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參數(shù)資料
| 型號： | PKD4311SI/C |
| 廠商： | ERICSSON POWER MODULES AB |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 390K |
| 代理商： | PKD4311SI/C |
18
EN/LZT 146 120 R2A Ericsson Microelectronics AB, June 2002
Output voltage adjust (Vadj)1)
Output voltage, VO, can be adjusted by using an external re-
sistor. To decrease the output voltage the resistor should be
connected between pin 16 and pin 15 (+Sense). To increase
the output voltage the resistor should be connected between
pin 16 and pin 17 (-Sense).
Please consult our application note AN 108D.
Sense leads1)
All PKD series DC/DC power modules have remote sense
that can be used to compensate for moderate amounts of
resistance in the distribution system and allow for voltage
regulation at the load or other selected point. The remote
sense lines will carry a current less than 50mA , and do
not need a large cross sectional area. However, the sense
lines on a PCB should be located close to a ground trace
or ground plane. In a discrete wiring situation, the usage
of twisted pair wires or other technique for reducing noise
susceptibility is recommended.
The power module will compensate for up to 10% voltage
drop between the sensor voltage and the voltage at the
power module output pins. If the remote sense is not needed
the -Sense should be connected to –Out and +Sense should
be connected to +Out.
Over Temperature Protection (OTP)
The PKD DC/DC power modules are protected from thermal
over load by an internal over-temperature shutdown circuit.
When the case temperature exceeds +130°C ± 15°C the
converter will automatically shut down. The converter will
automatically restart when temperature is below +115°C.
Layout recommendation
The radiated EMI performance of the power module will be
optimized by including a ground plane in the PCB area under
the module. This approach will return switching noise to
ground as directly as possible, with improvements to both
emissions and susceptibility. If one ground trace is used, it
should be connected to the input return. Alternatively, two
ground traces may be used, with the trace under the input
side of the module connected to input return and the trace
under the output side of the module connected to the output
return. Make sure to use appropriate safety isolation spac-
ing between these two return traces. The use of two traces
as described will provide the capability of routing the input
noise and output noise back to their respective returns.
Fig 1.
1) When using the output voltage adjust or the sense pins to increase
the output voltage, full positive adjust range, can only be guaranteed
above 40V input voltage.
Delivery Package Information
Trays
PKD series can be delivered in trays (designated by /B) on
request, see gure 1 below. For more information, please
contact your local Ericsson sales ofce.
Specication
Material:
Polyprophylene (PP)
Max temperature:
125 °C
Max surface resistance:
105/
Color:
Black
Capacity:
10 pcs/tray
Stacking pitch:
64,25 mm
Weight:
230g
Min. order quantity:
50 pcs (one box contains
5 full trays)
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