WRE-YD-4W&WRF-YD-4W
WRE-YD-4W&WRF-YD-4W
WRE-YD-4W&WRF-YD-4W
WRE-YD-4W&WRF-YD-4W
WRE-YD-4W&WRF-YD-4W
WRE-YD-4W&WRF-YD-4W
WRE-YD-4W&WRF-YD-4W
WRE-YD-4W&WRF-YD-4W
Series
Series
http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646 Page
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of
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RECOMMENDED
RECOMMENDED
RECOMMENDED
RECOMMENDED
RECOMMENDED
RECOMMENDED
RECOMMENDED
RECOMMENDED
CIRCUIT
CIRCUIT
CIRCUIT
CIRCUIT
CIRCUIT
CIRCUIT
CIRCUIT
CIRCUIT
Output Graph
APPLICATION
APPLICATION
APPLICATION
APPLICATION
APPLICATION
APPLICATION
APPLICATION
APPLICATION
NOTE
NOTE
NOTE
NOTE
NOTE
NOTE
NOTE
NOTE
Requirement
Requirement
Requirement
Requirement on
on
on
on output
output
output
output load
load
load
load
In order to ensure the product operate efficiently and reliably,in addition to a
max load(namely full load), a minimum load is specified for this kind of
DC/DC converter.Make sure the specified range of input voltage is not
exceeded,the minimum output load no
no
no
no less
less
less
less than
than
than
than 10%
10%
10%
10% load
load
load
load .If the actual
load is less than the specified minimum load, the output ripple may increase
sharply while its efficiency and reliability will reduce greatly.If the actual
output power is very small,please add an appropriate resistor as extra
loading,or contact our company for other lower output power products.
Recommended
Recommended
Recommended
Recommended Circuit
Circuit
Circuit
Circuit
All the WR E _ Y D- 4 W&WR E _ Y D- 4 W Series have been tested a ccording to
the following recommended testing circuit before leaving factory.This series
should be tested under load( S ee f igure 1).
If you want to further decrease the input/output ripple,you can increase
capacitance properly or choose capacitors with low ESR. However, the
capacitance of the output filter capacitor must be proper. If the capacitance
is too big, a startup problem might arise. For every channel of output,
provided the safe and reliable operation is ensured, the greatest capacitance
of its filter capacitor sees (Table 1).
General: Cin: 5V & 12V 10 0 μ F
24V & 48V 10 0 μ F-47 μ F
C out : 10 μ F/100mA
Input
Input
Input
Input current
current
current
current
While using unstable power source,please ensure the output voltage and
ripple voltage do not exceed indexes of the converter. Input current of
power supply should afford the startup current of this kind of DC/DC module
( See f igure 2).
General:Ip ≤ 1. 4 *Iin-max
No
No
No
No parallel
parallel
parallel
parallel connection
connection
connection
connection or
or
or
or plug
plug
plug
plug and
and
and
and play
play
play
play
Input
Input
Input
Input
Input
Input
Input
Input
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Voltage range 12VDC, 9~18VDC
24VDC, 18~36VDC
48VDC, 36~72VDC
Filter p(Pi) Network
Isolation
Isolation
Isolation
Isolation
Isolation
Isolation
Isolation
Isolation
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Rated voltage (60 sec) 3 0 00VDC
Resistance > 1000MOhm
Capacitance 120pF, typ .
Environmental
Environmental
Environmental
Environmental
Environmental
Environmental
Environmental
Environmental
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Operating temperature (ambient) -40 ° C ... +85 ° C
Storage temperature -55 ° C ... +125 ° C
Case temperature +100 ° C, max.
Derating None required
Humidity (non-condensing) Up to 90%
Cooling Free-air Convection
MTBF: > 1,036,000 hrs (MIL-HDBK-217F, Ground Benign, t=+25 ° C)
Specifications are subject to change without notifica tion
TYPICAL
TYPICAL
TYPICAL
TYPICAL
TYPICAL
TYPICAL
TYPICAL
TYPICAL
CHARACTERISTICS
CHARACTERISTICS
CHARACTERISTICS
CHARACTERISTICS
CHARACTERISTICS
CHARACTERISTICS
CHARACTERISTICS
CHARACTERISTICS
Temperature Derating Graph
General
General
General
General
General
General
General
General
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Efficiency 73% to 81%
Switching Frequency 250KHz, typ. 100% load
Output
Output
Output
Output
Output
Output
Output
Output
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Voltage accuracy ± 1%, max.
Voltage balance (Dual Output) ± 1%
Ripple & noise (at 20MHz BW) 60mVp-p, max.
Short circuit protection Continuous
Short circuit restart Automatic
Line voltage regulation ± 0.5%, max.
Load voltage regulation ± 0.5%, max.
Temperature coefficient ± 0.02%/ ° C, typ.
Physical
Physical
Physical
Physical
Physical
Physical
Physical
Physical
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Specifications
Dimensions 31.75x20.32x10.16mm
1.25x0.8x0.4inches
Weight 19g
Case material Nickel-Coated Copper