DHA2 Series
7 pin SIP Package, 2 Watt, Isolated, Regulated
Features
7pin SIP Package with Industry-Standard Footprint
Input / Output Isolation Voltage: 1.5kVDC
High Efficiency
Lead Free Design, RoHS Compliant
Operating temperature: -40°C to +85°C
Meet Safety Standard / Approval: IEC / EN60950-1
Applications
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.
Technical Specification All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
Model
Number
Input Voltage
Range(V)
DHA2-05S1
DHA2-05S2
4.75-5.25
Nominal:5
DHA1R5-05S3
DHA2-12S1
DHA2-12S2
11.4-12.6
Nominal:12
DHA1R5-12S3
DHA2-15S1
DHA2-15S2
14.3-15.8
Nominal:15
DHA1R5-15S3
DHA2-24S1
DHA2-24S2
DHA1R5-24S3
Output
Voltage
(V)
Output Current (mA) (1)
5
400
12
167
15
571
70
47
527
76
22
100
400
75
10
5
400
228
73
47
12
167
214
78
22
15
100
164
76
10
5
400
73
47
12
167
183
171
78
22
100
132
76
10
400
114
73
47
106
80
79
78
22
10
15
22.8-25.2
Nominal:24
Full Load
Input Current (mA)
Capacitive
Eff .(%) (2)
Typ.
Load, max. (3)
Typ.
(uF)
No Load Full Load
5
12
15
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167
100
40
20
15
10
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Page 1 of 6
Input Specifications
5V nominal input
4.75-5.25V
12V nominal input
11.4-12.6V
15V nominal input
14.3-15.8V
24V nominal input
22.8-25.2V
Input filter
Capacitor
Environmental Specifications
Operating ambient temperature
-40°Cto+85°C
Maximum case temperature
+105°C
Storage temperature range
-55°C to +125°C
Relative humidity
95%RH Max.
Output Specifications
Output power
Voltage accuracy
2Watts Max.
Nominal Vin and full load
5Vdc
12Vdc
15Vdc
4.75-5.15V
11.64-12.24V
14.7-15.3V
Minimum load
0A
Line regulation
For Vin charge of -5% +5%
Load Regulation
10%~100% load
Ripple and Noise (20MHz Bandwidth)
±1% Max.
60mVp-p Max.
Maximum capacitive load
Output short circuit protection
±0.25% Max.
See table
Automatic recovery
Temperature coefficient
Continuous
±0.03%/°C Typ.
General Specifications
Efficiency
Nominal input and full load
Isolation voltage
Input to output
Isolation resistance
500VDC
See table
1500VDC (60 second)
1000MΩ Min.
Isolation capacitance
30pF Typ.
Switching frequency
300kHz Max.
Reliability, calculated MTBF
2×10
6
Hrs
Physical Specifications
Case material
Plastic (UL94 V-0)
Potting material
PU (UL94 V-0)
Dimensions
19.6×10.1×7.0 mm
Weight
2.5g Typ.
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.
4. Specifications subject to change without notice.
5. In case of long input lines or hot plug-in requirements, we recommended to use an external low ESR capacitor
(22uF) near to the converter’s input pins.
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Page 2 of 6
Power Derating Curve
Power Derating Curve
Output Power (%)
120
100
80
60
40
20
0
-40
-20
0
20
40
71
60
80
100
120
Ambient Temp.TA ()
Mechanical Dimensions
Bottom
View
Pin Assignment
Front
View
Pin
Single
1
+Vin
2
-Vin
4
-Vout
6
+Vout
Unit: mm (inch)
Pin section tolerances:±0.1(±0.004)
General tolerances:±0.5(±0.02)
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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): Accuracy200μA ~ 200mA 4 ranges+(0.2% rdg + 2 digits)
2000mA ~ 20A 2ranges+(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
10.10~13.2V
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
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:
Narrow input voltage range(±10%)and unregulated output voltage series.
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│
│
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
8. Ripple and Noise: as shown below. The bandwidth is 0-20MHz.
Ripple&Noise
Noise
Ripple
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Page 5 of 6
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
power-temperature range. As shown below.
Output Power (%)
120
100
80
60
40
20
0
-40
-20
0
20
40
60
71
80
100
120
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.
12. Input souce impedance: The power module should be connected to low ac-impedance input souce.
Highly inductive souce impedances can affect the stability of the power module. In applications where power is
supplied over long lines and output loading is high , it maybe necessary to use a capacitor at the input to ensure
startup. Capacitor mounted close to the power module helps ensure stability of the unit , it is commended to use
a good quality low Equivalent Series Resistance ( ESR < 0.1Ω at 100KHz ) capacitor of a 22uF for the power
module.
DC
Power Supply
Cin
DC/DC
converter
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Load
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Page 6 of 6
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