WRA-YMD-20W

WRA-YMD-20W Series
20W, WIDE INPUT, ISOLATED&REGULATED DUAL OUTPUTDC-DC CONVERTER
SELECTION GUIDE
Input
Order code
Voltage*
(VDC)
Output
Current
No Load
(mA)
Current
Full Load
(mA)
Voltage
(VDC)
Current
(mA)
Efficiency
(%)
Capacitor
Load (uF)
WRA1212YMD-20W
9-18
30
1937
±12
±835
89
±470
WRA1215YMD-20W
9-18
30
1937
± 15
± 665
89
± 330
WRA2412YMD-20W
18-36
30
957
±12
± 835
90
± 470
WRA2415YMD-20W
18-36
30
957
± 15
± 665
90
± 330
Wide (2:1)Input Range
WRA4812YMD-20W
36-75
20
478
±12
± 835
90
± 470
1500 VDC I/O Isolation
WRA4815YMD-20W
36-75
20
484
± 15
± 665
89
± 330
FEATURES
Efficiency up to 87%
◆
◆
◆
Short Circuit Protection (automatic recovery)
*Input voltage can’t exceed this value, or will cause the permanent damage.
◆
Operating Temperature: -40°C to+85°C
◆
Internal SMD construction
◆
Metal Shielding Package
◆
Reg. Dual Output
◆
MTBF>1,000,000 hours
◆
Input Specifications
Soft Start and Remote Ctrl.
◆
Over Voltage/Current Protection
◆
RoHS Compliance
◆
Voltage Range
2:1 Wide Input
Input Filter
PI Type
Input Reflected Ripple Current¹
20 mA pk-pk
Start up Time (Nom. Vin and constant resistive load)
20mS, typ.
Output Specifications
MODEL SELECTION
①
②
③ ④
⑤
⑥
WRA 12 12 Y MD -20
20W
W(835)
①Product Series ②Input Voltage
③Output Voltage ④Wide (2:1) Input Range
⑤package style
⑥Rated Power(Output current)
APPLICATIONS
The WRA-YMD-20W series is a family of cost
effective 20W, dual output DC/DC converters
with a wide 2:1 Input.These converters are
encapsulated in nickel coated copper 2″x1″
case with high performance technology like
active clamp, high efficiency operation and
output voltage accuracy of ±1% maximum.
Precise controlled design provides tight line/
load regulation .
Voltage Accuracy
± 1%
Voltage Adjustability (Trim–only Single Output)
± 10%, max.
Short Circuit Protection
Indefinite (Hiccup, Automatic Recovery)
Over Current Protection
140% of max. Iout
Line Regulation
± 0.2%
Load Regulation (0% - 100%)
± 1% (Dual)
Cross Regulation³ (Dual Output)
± 5%
Ripple and Noise (20Mhz bandwidth)
75 mV pk-pk
Temperature Coefficient
± 0.02% /°C
Transient Recovery Time4
250us, typ.
Transient Response Deviation4
± 3%, max.
General Specifications
Efficiency
See Table
I/O Isolation Voltage (3 sec.)
1500 VDC
I/O Isolation Capacitance
1200 pF, typ.
I/O Isolation Resistance
1000 M Ohm
Switching Frequency
330 kHz, typ.
Humidity
95% rel H
Reliability Calculated MTBF (MIL-HDBK-217F)
> 0.684 Mhrs
Physical Specifications
MICRODC RESERVES THE COPYRIGHT
http://www.microdc.cn
Case Material
Nickel Coated Copper
Potting Material
Epoxy (UL94V-0 rated)
Weight
~ 30g, typ.
Environment Specifications
Operating Temperature
-40 to +71°C (ambient)
Maximum Case Temperature
100°C
Storage Temperature
-40 to +125°C
Cooling
Free Air Convection
RoHS Conform
Soldering 260°C, max. (1.5mm from case 10s.)
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
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WRA-YMD-20W Series
OUTLINE DIMENSIONS& FOOTPRINT DETAILS
RECOMMENDED FOOTPRINT
MECHANICAL DIMENSIONS
TUBE OUTLINE DIMENSIONS
Note:
Unit : mm[inch]
Pi n diameter tolerances:±0.10mm[±0.004 inch]
General tolerances:±0.25mm[±0.010 inch]
PIN CONNECTIONS
#
DUAL
1
+Vin
2
- Vin
3
+Vout
4
Common
5
- Vout
6*
CTRL
CTRL can be added according to customers' need
*CTRL
OUTPUT VOLTAGE TRIM UP/DOWN
Over Voltage Protection (Zender diode clamp)
±12 Vout
±15 V
±15 Vout
±18 V
Under Voltage Lockout (typ.)
12 Vin Models
Module ON/OFF 8.6V / 7.9V
24 Vin Models
Module ON/OFF 17.8V / 16V
48 Vin Models
Module ON/OFF 33.5V / 30.5V
External Output Trimming
Remote ON/OFF Control
Output can be externally trimmed.
(Single output models only!)
http://www.microdc.cn
ON:
3 -12 VDC or open circuit
OFF:
0 – 1.2 VDC or Short circuit PIN2 and PIN6*
OFF idle current:
5mA, typ.
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 2 of 3
WRA-YMD-20W Series
EMC SPECIFICATIONS
Radiated
DERATING & EFFICIENCY CURVE
EN 55022
CLASS A
EN 55022
CLASS A
ESD
EN 61000-4-2
Perf. Criteria B
RS
EN 61000-4-3
Perf. Criteria A
Emissions
Conducted
Emissions
EFT
6
EN 61000-4-4
Perf. Criteria B
Surge6
EN 61000-4-5
Perf. Criteria B
CS
EN 61000-4-6
Perf. Criteria A
PFMF
EN 61000-4-8
Perf. Criteria A
Part #
C1
L
WRA12xxYMD-20W
EN 61000-4-4
Perf. Criteria B
WRA24xxYMD-20W
EN 61000-4-5
Perf. Criteria B
WRA48xxYMD-20W
EN 61000-4-6
Perf. Criteria A
1. Temperature derating curve
2. Efficiency Vs Input voltage
WRA2412YMD-20W
Efficiency VS Input voltage
1 = Measured Input reflected ripple current with a simulated source inductance of
12uH.
2 = Tested by minimal Vin and constant resistive load.
3. Efficiency Vs Output Power
3 = One load is 25% to 100% load, the other load is100% load, the output voltage
WRA2412YMD-20W
variable rate is within ±5%.
4 = Tested by nominal Vin and 25% load step change (75% - 50% - 25% of Io)
Efficiency VS
Output load
5 = Input filter components (C1, L)are used to help meet conducted emissions
require for the module. These components should be mounted as close as
possible to the module; and all leads should be minimized to decrease radiated
noise.
6 = An external filter capacitor is required if the module has to meet EN61000-4-4
and EN61000-4-5
--Input filter components (C1, C2, L) are used to help meet conducted emissions
requirement for the module. These components should be mounted as close as
possible to the module; and all leads should be minimized to decrease radiated
noise.
RoHS COMPLIANT INFORMATION
Microdc Professional Power Module,Inc.
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C
Tel:0086-20-86000646 E-mail:[email protected]
for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte
Website:http://www.microdc.cn
Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are
Microdc Professional Power module,Inc.makes no representation that
backward compatible with Sn/Pb soldering systems.
the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or
REACH COMPLIANT INFORMATION
future patent rights. Specifications are subject to change without notice.
This series has proven that this product does not contain harmful chemicals, it also has harmful chemical
©2010
substances through the registration, inspection and approval.
Microdc Professional Power Module, Inc. Guangzhou
http://www.microdc.cn
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
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