2A-YJD&2B-YJD
Series
2W,Wide Input , Isolated&Regulated Dual/Single Output DIP16 DC/DC Converter
Absolute Maximum Ratings
Parameter
5VDC Input Models
Min.
-0.7
-0.7
-0.7
-0.7
---
---
Max.
11
25
50
100
260
1,800
Unit.
VDC
VDC
VDC
VDC
℃
mW
FEATURES
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
Input Sure Voltage
(1000 mS)
12VDC Input Models
24VDC Input Models
48VDC Input Models
Ultra-wide 2:1 input range
DIP-16 package
Efficiency up to 81%
Lead Temperature(1.5mm from case for 10 Sec.)
Internal Power Dissipation
Temperature range –40°C to +85°C
HMTBF＞1,000,000 Hours
Low Ripple and Noise
Short Circuit Protection
I/O isolation 1500 VDC
Complies with EN55022 Class A
Fully RoHS compliant
UL 94 V-0 Package Material
Internal SMD Construction
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
Conducted
Conditions
Ambient
Case
Min.
-40
-40
-40
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Free-Air Convection
EN55022 Class A
Max.
+65
+90
+125
95
Unit.
℃
℃
℃
%
◆
MODEL SELECTION
2A 24 05 Y JD
①
②
③
④
⑤
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
①Product
Series
②Input
Voltage
③Output
Voltage
④Wide
(2:1) Input Range
⑤DIP16
Package Style
s
DESCRIPTION
The 2A-YJD & 2B-YJD Series power modules are
low-profile dc-dc converters that operate over input
voltage
of
4.5-9VDC,9-18VDC,18-36VDC
and
36-75VDC which provide precisely regulated output
voltages of 3.3V,5V,12V,15V,±5V,±12V and ±15VDC.
The 2A-YJD & 2B-YJD Series is an excellent for data
communication equipments,mobile battery driven
equipments,distributed
power
systems,
telecommunication equipments,mixed analog/machine
control equipments,computer peripheral systems and
industrial robot systems.
The modules have a maximum power rating of 2W
and a typical full-load efficiency of 81%,continuous short
circuit,30mV output ripple,built-in filtering for both input
and output minimize the need for external filtering.
Capacitive Load
Models by Vout
Maximum Capacitive Load
* For each output
3.3V
2200
5V
1000
12V
110
15V
470
±5V
*
100
±12V
*
20
±15V*
47
Unit
uF
Input Fuse Selection Guide
5V Input Models
MICRODC R ESERVES THE COPYRIGHT
12V Input Models
500mA Slow - Blow Type
24V Input Models
250mA Slow - Blow Type
48V Input Models
120mA Slow - Blow Type
1000mA Slow - Blow Type
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 6
2A-YJD&2B-YJD
Series
SELECTION GUIDE
MICRODC reserves the copyright
Model
Number
2B0503YJD
2B0505YJD
2B0512YJD
2B0515YJD
2A0505YJD
2A0512YJD
2A0515YJD
2B1203YJD
2B1205YJD
2B1212YJD
2B1215YJD
2A1205YJD
2A1212YJD
2A1215YJD
2B2403YJD
2B2405YJD
2B2412YJD
2B2415YJD
2A2405YJD
2A2412YJD
2A2415YJD
2B4803YJD
2B4805YJD
2B4812YJD
2B4815YJD
2A4805YJD
2A4812YJD
2A4815YJD
48
( 36 ~ 75 )
24
( 18 ~ 36 )
12
( 9 ~ 18 )
5
( 4.5 ~ 9 )
Input
Voltage
VDC
Output
Voltage
VDC
3.3
5
12
15
±5
±12
±15
3.3
5
12
15
±5
±12
±15
3.3
5
12
15
±5
±12
±15
3.3
5
12
15
±5
±12
±15
Output Current
Max
mA
500
400
167
134
±200
±83
±67
500
400
167
134
±200
±83
±67
500
400
167
134
±200
±83
±67
500
400
167
134
±200
±83
±67
Min
mA
125
100
42
33
±50
±21
±17
125
100
42
33
±50
±21
±17
125
100
42
33
±50
±21
±17
125
100
42
33
±50
±21
±17
Input Current
@Max. Load
mA (Typ.)
471
548
534
582
667
615
598
184
217
209
220
242
224
226
96
109
109
108
119
112
110
49
57
53
55
62
57
57
@No Load
mA (Typ.)
40
40
40
40
40
40
40
20
20
20
20
20
20
20
10
10
10
10
10
10
10
8
8
8
8
8
8
8
Reflected
Ripple
Current
% (Max.)
100
100
100
100
100
100
100
25
25
25
25
25
25
25
15
15
15
15
15
15
15
10
10
10
10
10
10
10
Efficiency
@Max. Load
% (Typ.
70
73
75
73
64
69
71
73
77
80
80
73
78
78
72
77
80
81
74
78
80
71
73
79
79
71
77
77
Input Specifications
Parameter
Start Voltage
Mode
5V Input Models
12V Input Models
24V Input Models
48V Input Models
Under Voltage Shutdown
5V Input Models
12V Input Models
24V Input Models
48V Input Models
Reverse Polarity Input Current
Short Circuit Input Power
Input Filter
All Models
All Models
All Models
Min.
3.5
4.5
8
16
---
---
---
---
---
---
Typ.
4
7
12
24
3.5
6.5
11
22
---
---
Pi Filter
Max.
4.5
9
18
36
4
8.5
17
34
1
1500
Unit.
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
A
mW
Output Specifications
Parameter
Output Voltage Accuracy
Output Voltage Balance
Line Regulation
Load Regulation
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Power Protection
Transient Recovery Time
Transient Response Deviation
Temperature Coefficient
Output Short Circuit
25% Load Step Change
25% Load Step Change
Over Line, Load & Temp
Dual Output, Balanced Loads
Vin=Min. to Max
Io=25% to 100%
Conditions
Min.
---
---
---
---
---
---
---
120
---
---
---
Typ.
±1.0
±1.0
±0.3
±0.5
30
---
---
---
100
±3
±0.01
Continuous
Max.
±2.0
±2.0
±0.5
±0.75
50
75
15
---
300
±5
±0.02
Unit.
%
%
%
%
mV P-P
mV P-P
mV rms
%
uS
%
%/]
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 6
2A-YJD&2B-YJD
Series
General Specifications
Parameter
Isolation Voltage Rated
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
Notes :
1. Specifications typical at Ta=+25℃, resistive load, nominal input voltage, rated output current unless otherwise noted.
2. Transient recovery time is measured to within 1%error band for a step change in output load of 75% to 100%.
3. Ripple & Noise measurement bandwidth is 0-20 MHz.
4. These power converters require a minimum output loading to maintain specified regulation.
5. Operation under no-load conditions will not damage these modules; however, they may not meet all specifications listed.
6. All DC/DC converters should be externally fused on the front end for protection.
7. Other input and output voltage may be available, please contact factory.
8. Specifications subject to change without notice
MIL-HDBK-217F @ 25℃, Ground Benign
Conditions
60 Seconds
Flash Tested for 1 Second
500VDC
100KHz,1V
Min.
1500
1650
1000
---
---
1000
Typ.
---
---
---
250
300
---
Max.
---
---
---
420
---
---
Unit.
VDC
VDC
MΩ
pF
KHz
K Hours
Block Diagram
Single Output
Dual Output
Input Voltage Transient Rating
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 3 of 6
2A-YJD&2B-YJD
Series
Input Voltage Transient Rating
Efficiency vs Input Voltage ( Single Output )
Efficiency vs Input Voltage ( Dual Output )
Efficiency vs Output Load ( Single Output )
Efficiency vs Output Load ( Dual Output )
Ambient Temperature
℃
Derating Curve
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Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 4 of 6
2A-YJD&2B-YJD
Series
Test Configurations
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with a inductor Lin (4.7uH) and Cin
(220uF, ESR < 1.0[ at 100 kHz) to simulated source impedance.
Capacitor Cin, offsets possible battery impedance.
Current ripple is measured at the input terminals of the module, measurement
bandwidth is 0-500KHz.
To provide protection in a fault (output overload) condition, the unit is equipped
with internal current limiting circuitry and can endure current limiting for an
unlimited duration. At the point of current-limit inception, the unit shifts from voltage
control to current control. The unit operates normally once the output current is
brought back into its specified range.
Input Source Impedance
The power module should be connected to a low ac-impedance input source.
Highly inductive source impedances can affect the stability of the power module.
In applications where power is supplied over long lines and output loading is
high, it may be necessary to use a capacitor on the input to insure startup.
By using a good quality low Equivalent Series Resistance (ESR < 1.0[ at 100
kHz) capacitor of a 8.2uF for the 5V input devices, a 3.3uF for the 12V input
devices and a 1.5uF for the 24V and 48V devices, capacitor mounted close to the
Peak-to-Peak Output Noise Measurement Test
Use a Cout 0.47uF ceramic capacitor.
Scope measurement should be made by using a BNC socket, measurement
bandwidth is 0-20 MHz. Position the load between 50 mm and 75 mm from the
DC/DC Converter.
power module helps ensure stability of the unit.
Output Ripple Reduction
A good quality low ESR capacitor placed as close as practicable across the
load will give the best ripple and noise performance.
To reduce output ripple, it is recommended that 3.3uF capacitors are used on
output.
Design & Feature Considerations
Maximum Capacitive Load
The 2A(B)-YJD series has limitation of maximum connected capacitance on
the output.
The power module may operate in current limiting mode during start-up,
affecting the ramp-up and the startup time.
The maximum capacitance can be found in the data sheet.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 5 of 6
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