WRA-YMD-3W
＆
WRB-YMD -3W
Series
TEMPERATURE CHARACTERISTICS
Parameter
Output power
Positive voltage accuracy
Negative voltage accuracy
Load regulation
Line regulation
Temperature drift (Vout)
Ripple & Noise**
Switching frequency
TYPICAL CHARACTERISTICS
Min.
0.3
±1
±3
±0.5
±0.2
Conditions
Refer to products program
Refer to recommended circuit
Refer to recommended circuit
Form 10% to 100% load
Input voltage from low to high
Refer to recommended circuit
20MHz Bandwidth
100% load, input voltage range
Typ.
Max.
3
±3
±5
±1*
±0.5
±0.03
Units
W
%
%
%
%
%/°C
mVp-p
KHz
Temperature Derating Graph
75
300
150
* Dual output models unbalanced load: ±5%.
** Test ripple and noise by “parallel cable” method. See detailed
Testing of Power Converter section, application notes.
operation instructions at
RECOMMENDED CIRCUIT
Output Graph
Case material
COMMON SPECIFICATIONS
Parameter
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
Cooling
Short circuit protection
1.5mm from case for 10 seconds
Conditions
Min.
Typ.
Max.
95
Units
%
℃
℃
℃
-40
-55
±1
±3
15
85
125
300
Free Air Convection
℃
Continuous, Automatic recovery
Case material
No-load power consumption
Aluminium Alloy
0.2
Tested for1 minute and 1mA max
W
VDC
MΩ
Isolation voltage
Isolation resistance
Isolation Capacitance
MTBF
Weight
1500
1000
100
1000
15
Test at 500VDC
Input/output
pF
K hours
g
APPLICATION NOTE
Requirement on output 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 less than 10% 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.
Output External Capacitor Table(Table 1)
Single Vout
Cout
(μF)
2200
1000
680
470
330
220
Dual Vout
(VDC)
±5
±9
±12
±15
----
----
Cout
(μF)
680
470
330
220
----
----
(VDC)
3.3
5
9
12
15
24
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
2
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MICRODC [ MICRODC POWER TECHNOLOGY CO., LTD ]
