WRA-YLS-3W
Series
WIDE INPUT,ISOLATED & REGULATED Dual Output SIP DC/DC Converter
SELECTION GUIDE
Input
order code
Voltage
V (NOM.)
Rated Output
Voltage
V
Output Current
Min
Load
3
Full Load
mA
Input
Current
2
mA
Effciency
(MIN.)
%
Isolation
Capacitance
pF
mA
WRA2412YLS-3W
24
24
48
48
±12
±15
±12
±15
±32
±25
±32
±25
125
100
125
100
157
155
78
78
81
82
78
78
36
36
40
40
FEATURES
◆
RoHS compliant
◆
Compact SIP form factor
◆
2:1 Wide range voltage input
◆
Continuous short circuit protection with
WRA2415YLS-3W
WRA4812YLS-3W
WRA4815YLS-3W
INPUT CHARACTERISTICS
Parameter
Conditions
Min.
Typ.
Max.
Units
current foldback
Operating
◆Operating
temperature range –40°C to +85°C
40°
+85°
◆
0.5% Load Regulation
◆
1kVDC Isolation
◆
24V & 48V nominal input
◆
12V & 15V Output
◆
Power density 1.00W/cm
3
◆
Remote on/off
◆
No electrolytic capacitors
◆
Low noise
Voltage range
All WRA24XX types
All WRA48XX types
18
36
24
48
200
105
8
16
36
72
250
150
V
Refected ripple current
All WRA24 types when 10µF at input
All WRA48 types when 10µF at input
mA p-p
Shutdown Power
VIN Nominal 24XX
VIN Nominal 48XX
mW
INPUT CHARACTERISTICS
Parameter
Conditions
Min.
Typ.
Max.
Units
Voltage set point accuracy
Line regulation
With external input/output capacitors
Low line to high line with external
input/
output capacitors
Minimum load to rated load with
external input/output capacitors
±1
0.05
±5
0.2
%
%
Load regulation
0.2
0.5
%
Ripple
BW = 20Hz to 300kHz with external
input/
outputDC to 20MHz with external
BW = capacitors
input/
output capacitors on negative output
% voltage change
15
30
mV rms
MODEL SELECTION
WRA 24 12 Y LS -3W
①
②
③
④
⑤
⑥
Ripple & noise
90
150
mV p-p
①Product
Series
②Input
Voltage
③Output
Voltage
④Wide
(2:1) Input Range
⑤
Lengthened SIP Package Style
⑥
Rated Power
Cross regulation
when positive load varies from 12% to
50% with negative load fxed at 50%
2.1
5.0
%
PRODUCT OVERVIEW
The WRA-YLS-3W series is a range of high performance
miniature DC/DC converters having regulated outputs
over the wide temperature range of –40°C to +85°C. The
input voltage range is 2:1 and the input to output isolation
is 1kVDC. Continuous short circuit protection, external
control and extremely small SIP packaging provide state
of the art functionality. The use of ceramic capacitors and
a ceramic substrate, and SMD construction, provide
genuine high reliability. Nominal input voltages of 24 and
48V with output voltages of 12 and 15V are available as
standard with custom parts on request. The plastic case is
rated to UL 94V-0 with encapsulant to UL 94V-1.
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection
Lead temperature 1.5mm from case for 10 seconds
Minimum output load for specifcation
3
Control pin input current
Input voltage 24 types
1
Input voltage 48 types
1
Free air space
Continuous
300°C
25% of rated output
15mA
40V
80V
10mm MIN. around component
1. Absolute maximum value for 30 seconds. Prolonged operation may damage the product.
2. Measured at full load with external input/output capacitors. Refer to application note.
3. A lower load condition can be used but higher levels of output ripple may be experienced, this condition may
also cause the output
voltage to exceed its specifcation transiently during power down when the input voltage also falls below its rated
minimum.
All specifcations typical at TA=25°C, Nominal input voltage and rated output current unless otherwise specifed.
MICRODC reserves the copyright
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
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