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参数资料
| 型号： | PKG4410PI |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 46 W DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 10/20页 |
| 文件大小： | 1395K |
| 代理商： | PKG4410PI |
18
PKG4000ISeriesDatasheetEN/LZT14604R3AEricssonPowerModules,April2007
Operatinginformation
CurrentLimitingProtection
The output power is limited at loads above the output cur-
rent limiting threshold (Ilim), specified as a minimum value.
InputandOutputImpedance
Both the source impedance of the power feeding and the
load impedance will interact with the impedance of the DC/
DC converter. It is most important to have the ratio between
L and C as low as possible, i.e. a low characteristic imped-
ance, both at the input and output, as the converters have a
low energy storage capability. Use an electrolytic capacitor
across the input or output if the source or load inductance is
larger than 10 H. Their equivalent series resistance together
with the capacitance acts as a lossless damping filter. Suit-
able capacitor values are in the range 10–100 F.
ParallelOperation
The load regulation characteristics and temperature coef-
ficients of the PKG DC/DC converter are designed to allow
parallel operation. Paralleling of several modules is easily
accomplished by connection of the output voltage terminal
pins. The connections should be symmetrical, i.e. the resist-
ance between the output terminal and the common connec-
tion point of each module should be equal. Good paralleling
performance is achieved if you allow the resistance to be 10
m
. 10 m equals 50 mm (2 in) of 35 m (1 oz/ft2) copper
with a trace width of 2.5 mm (0.1 in). It is recommended not
to exceed PO =n × 0.8 × POmax, where POmax is the maxi-
mum converter output power and n the number of
paralleled converters, in order to avoid overloading any of
the con-verters and thereby decreasing the reliability.
Paralleling performance may be further improved by volt-
age matching. Voltage matching is accomplished by using
the Output Adjust function and trim the outputs to the same
voltage.
OutputVoltageAdjust(Vadj)
To decrease the output voltage the resistor should be con-
nected between pin 10 and pin 9 (+ Out 1). To increase the
output voltage the resistor should be connected between pin
10 and pin 8 (–Out1). Output voltage, VO, can be adjusted by
using an external resistor. A 0.1 M
resistor will change VO
approximately 5%. For more information see AN 104 G.
MaximumCapacitiveLoad
The PKG DC/DC converter series has no limitation of
maximum connected capacitance on the output, however
the converter may operate in current limiting mode during
start-up, affecting the ramp-up and the start-up time if large
capacitance values are connected. For optimum perform-
ance we recommend a maximum of 100 F/A of IO for dual
outputs. Connect capacitors at the point of load for best
performance.
RC (pin 1)
PKG
TTL
In (pin 4)
Fig.1
RemoteControl(RC)
Remote turn-on and turn-off can be realized by using the
RC-pin. Normal operation is achieved if pin 1 is open (NC). If
pin 1 is connected to pin 4 the PKG DC/DC converter turns
off. To ensure safe turn-off the voltage difference between
pin 1 and 4 shall be less than 0.6 V. RC is TTL open collector
compatible (see fig. 1).
OverVoltageProtection(OVP)
The PKG 4000 I DC/DC converter series has an internal Over
Voltage Protection circuitry (latching). The circuitry will detect
over voltage conditions on the output and stop the converter
operation. The recommended way to reset the OVP is by re-
moving the input voltage. The OVP can not be triggered from
the output (it can not be tested by applying high voltage on
the output pins) and occurs only if the DC/DC converter has
a real failure.
TraySpecification
Material:
Polystyrene (PS)
Max surface resistance:
10 MOhm/sq
Color:
Black
Capacity:
10 pcs/tray
Loaded tray stacking pitch: 17 mm
Weight:
133 g
DeliveryPackageInformation
PKG 4000I series standard delivery package is a 50 pcs box
(One box contains 5 full trays).
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