MRD5

Isolated DC-DC Converters
MRD5 Series -- 5 Watt
BOTHHAND USA
Features
Wide 2 : 1 Input Voltage Range(9~18V,18~36V,36~75V)
High Efficiency
High Power Density
Input / Output Isolation Voltage: 1.5kVDC
Extended Operating Temperature Range: -55°C to+95°C
Output Short Circuit Protection:
Continuous & Auto Recovery
Description
Over Voltage Protection: Clamp Mode
Fixed Switching Frequency
The MRD5 Series are isolated 5W DC/DC converters. Designed
with highly efficiency, allow the operating temperature range of
these units to be -55°C to +95°C in a DIP package with
industry-standard footprint. Further features include wide 2 : 1
input voltage range, remote on/off control, short-circuit protection
and over voltage protection.
Shielded Metal Case with Insulated Baseplate
Lead Free Design, RoHS Compliant
Industry Standard Pinout
Applications
Customer Design Available
These converters are well suitable for battery operated
equipment, measurement equipment, telecom, wireless
network, Industry control system, everywhere where isolated,
tightly regulated voltages and compact size are required.
Meet Safety Standard : IEC / EN60950-1
Technical Specification All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
Model
Number
Output Current (mA)
Input Voltage Output
Voltage
(1)
Range
Full. Load
(Vdc) Min. Load
MRD5-12S1
Input Current (mA)
No Load
Full Load
(2)
Eff . Capacitive
max.
(%) Load,
(3)
(uF)
5
0
1000
17
555
79
1000
12
0
416
21
527
83
220
MRD5-12D3
±15
0
±167
27
543
81
47
MRD5-24S1
5
0
1000
9
278
79
1000
12
0
416
12
267
82
200
MRD5-24D3
±15
0
±167
15
268
82
47
MRD5-48S1
5
0
1000
5
139
79
1000
12
0
416
7
134
82
133
±15
0
±167
8
134
82
47
MRD5-12S2
MRD5-24S2
MRD5-48S2
9~18V
Nominal:12Vdc
18~36V
Nominal:24Vdc
36~75V
Nominal:48Vdc
MRD5-48D3
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Rev:20150827A
Page 1 of 7
Isolated DC-DC Converters
MRD5 Series -- 5 Watt
BOTHHAND USA
Input Specifications
Input Voltage
12V nominal input
9-18V
24V nominal input
18-36V
48V nominal input
36-75V
Input filter
Pi Type
Input surge voltage
12V nominal input
25V
(100ms max.)
24V nominal input
50V
48V nominal input
100V
Input reflected ripple current
Nominal Vin and full load
70mAp-p typ.
Start up time
Nominal Vin and constant resistive load
1300ms typ.
Reverse voltage protection
1.0A max
Environmental Specifications
Operating ambient temperature
-55°C to +95°C (with derating)
Maximum case temperature
+100°C
Storage temperature range
-55°C to +125°C
Relative humidity
5% to 95% RH
Temperature coefficient
±0.02% / °C max.
Output Specifications
Output power
Voltage accuracy
5 Watts max.
Full load and nominal Vin
±1%
Minimum load
Line regulation
See table
LL to HL at full load
25% load to full load
Load Regulation
Balanced load
±0.8%
Single
±1.0%
Dual
±1.0%
Unbalanced load 25% to 100% full load
Ripple and Noise
Over voltage protection
(Zener Diode Clamp)
±5%
20MHz bandwidth
75mVp-p max.
5Vout models
6.2V
12Vout models
15V
15Vout models
18V
Capacitive load
Over load protection
See table
% of full load at nominal input
Short circuit protection
150% typ.
Continuous, automatic recovery
Transient response settling time
50% load step change
Transient response over shoot
di/dt=0.8A/µs
1300us typ.
≤ ±5% of Vo
General Specifications
Efficiency
Nominal input
See table
Isolation voltage
Input to output
1500VDC
Isolation resistance
500VDC
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9
10 Ohms min.
Rev:20150827A
Page 2 of 7
Isolated DC-DC Converters
MRD5 Series -- 5 Watt
BOTHHAND USA
Isolation capacitance
580pF typ.
Switching frequency
Pulse width modulation (PWM)
300kHz typ.
6
Reliability, calculated MTBF
1.19× 10 Hrs
Physical Specifications
Case material
Nickel-coated copper
Base material
Non-conductive black plastic
Potting material
Silicon rubber (UL94V-0)
1.0 × 1.0 × 0.4 Inch
Dimensions
(25.4 × 25.4 × 10.2 mm)
Weight
17.4g (0.62oz) typ.
Output Power (%)
Power Derating Curve
120
100
80
60
40
20
0
62
-55
-35
-15
5
25
45
95
65
85
105
125
MRD5-48S1
MRD5-48S1
Input voltage vs. Efficiency
Output Current vs. Efficiency
85
85
80
75
70
65
60
55
50
45
Efficiency (%)
Efficiency (%)
Ambient Temp.TA (℃
℃)
80
75
70
65
60
55
50
45
Input voltage (V)
E-mail: [email protected]
Output Current (A)
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Rev:20150827A
Page 3 of 7
1
75
0. 9
68
0.8
64
0. 7
60
0.6
56
0.5
52
0.4
48
0.3
44
0.2
40
0 .1
36
Isolated DC-DC Converters
MRD5 Series -- 5 Watt
BOTHHAND USA
MRD5-48S1
MRD5-48S1
Transient Response at 50%~100% Max Load
Loop Gain & Phase at Vi=48V,Full Load
Note
1. Io below this value will not damage these converters, however, they may not meet all listed specifications.
2. Typical value, tested at nominal input and full load.
3. For each output.
Mechanical Dimensions
Pin
1
2
3
4
5
Pin Assignment
Single
Dual
+Vin
+Vin
-Vin
-Vin
+Vout
+Vout
No pin
Common
-Vout
-Vout
Unit: mm [inch]
Tolerance:±0.5[0.02]
Specifications subject to change without notice.
E-mail: [email protected]
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Rev:20150827A
Page 4 of 7
Isolated DC-DC Converters
MRD5 Series -- 5 Watt
BOTHHAND USA
Package Information
PS:
Unit: mm [inch]
L= 285 mm[11.22 inch] ; ONE TUBE = 10 PCS
Test Configurations
All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
A
A
DC
Power Supply
DC/DC
converter
V
V
Load
◎DC Power Supply: It offers a wide voltage and current range precisely.
◎Current meter (A): Accuracy 200μA ~ 200mA 4 ranges+(0.2% rdg + 2 digits)
2000mA ~ 20A
2 ranges+(0.3% rdg + 2 digits).
◎Voltage meter (V): Accuracy +(0.03% rdg + 4 digits).
◎Load: At full load.
◎Wires: The resistance of the wires must be small.
1. Input voltage range: Narrow input voltage range（±10%）、wide input voltage range (2:1 and 4:1）。
EX: Narrow input voltage range（±10%）
5V nominal input
4.5~5.5V
12V nominal input
10.8~13.2V
24V nominal input
21.6~26.4V
Wide input voltage range 2:1
5V nominal input
12V nominal input
24V nominal input
48V nominal input
4.5~9V
9~18V
18~36V
36~75V
Wide input voltage range 4:1 (W)
24V nominal input
9~36V
48V nominal input
18~75V
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Rev:20150827A
Page 5 of 7
Isolated DC-DC Converters
MRD5 Series -- 5 Watt
BOTHHAND USA
2. Input power :
Pin = Vin x Iin
Vin：Input voltage
Iin：Input current
Pout = Vout x Iout
Vout：Output voltage
Iout：Output current
3. Output power :
4. Efficiency :
Efficiency =
Pout
Pin
x100%
Pout: Output power
Pin: Input power
5. Voltage accuracy:
│Vout-Vout(nominal)│
│
Vout
x100%
Vout：Output voltage
Vout(nominal)：Nominal output voltage
││││
││││
6. Line regulation: (1) Wide input voltage range and regulated output voltage series.
│Vout(LL)-Vout(HL)│
│
LL: Low Line input voltage
x100%
HL: High Line input voltage
Vout(LL)
(2) Narrow input voltage range（±10%）and unregulated output voltage series.
Line regulation=
ΔVout
ΔVin
ΔVout = Vout(+10%)-Vout(-10%) x100%
Vout
Vout(+10%)：Output voltage at Vin = 1.1xVin(nominal)&full load
Vout(-10%)：Output voltage at Vin = 0.9xVin(nominal)&full load
Vout：Output voltage at Vin = Vin(nominal)&full load
ΔVin = Vin(+10%)-Vin(-10%) x100%
Vin(nominal)
Vin(+10%)：Input voltage = 1.1xVin(nominal)
Vin(-10%)：Input voltage = 0.9xVin(nominal)
Vin(nominal)：Nominal Input voltage
7. Load regulation :
│Vout(FL)-Vout(NL)│
│ x100%
Vout(FL)
Vout(FL): Output voltage at full load
Vout(NL): Output voltage at 25% full load or 10% full load
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Rev:20150827A
Page 6 of 7
Isolated DC-DC Converters
MRD5 Series -- 5 Watt
BOTHHAND USA
8. Ripple and Noise: as shown below. The bandwidth is 0-20MHz.
Ripple&Noise
Noise
Ripple
Output Ripple&Noise measurement test circuit: as shown below.
Copper strip
DC/DC
converter
Co
Load
Oscilloscope
Copper strip
Co: usually 0.47uF.
9. Temperature derating curve: The DC-DC converter will operate over a wider temperature range if less power is
drawn from the output and the device is already running. The temperature derating curve shows the operating
Output Power (%)
power-temperature range. As shown below.
120
100
80
60
40
20
0
95 100
-55
-35
-15
5
25
45
65
85
105
125
Ambient Temp.TA (℃
℃)
10. Switching frequency: The nominal operating frequency of the DC-DC converters.
11. Input to output isolation: The dielectric breakdown strength test between input and output circuits. This is the
isolation voltage the device is capable of withstanding for a specified time, usually 1 second or 1 minute.
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Rev:20150827A
Page 7 of 7