◆Ultra-wide input voltage range: 4:1 (9-36V, 18-72V, etc.)
◆Working temperature range: -40℃～+85℃
◆Short circuit protection (self-recovery)
◆Small volume, SIP package
◆Isolation voltage 1500VDC
◆Flame retardant package, meets the requirements of UL94-V0
◆Complied with RoHS command

dcdc module power supply application range

Power systems such as wireless network, telecommunications/data communications, power systems, industrial control systems, measurement instruments and instrumentation, and intelligent fields. It is suitable for designs such as large fluctuations in the input range, small power isolation, and small layout space, and to achieve modular product functions to improve product reliability.

dcdc module power supply model

model

Input voltage range

Output voltage/output current Vo/Io

Efficiency (TYP)

EWS3-24S05

9 – 36 VDC

5V / 600mA

76%

EWS3-24S06

9 – 36 VDC

6V / 600mA

78%

EWS3-24S12

9 – 36 VDC

12V / 250mA

79%

EWS3-24S15

9 – 36 VDC

15V / 200mA

81%

EWS3-48S05

18 – 72 VDC

5V / 600mA

77%

EWS3-48S12

18 – 72 VDC

12V / 250mA

78%

EWS3-48S15

18– 72 VDC

15V / 200mA

80%

EWS3-24D05

9 – 36 VDC

±5V / ±300mA

78%

EWS3-24D12

9 – 36 VDC

±12V / ±125mA

79%

★EWS3-24D15

9 – 36 VDC

±15V / ±100mA

81%

EWS3-48D05

18 – 72 VDC

±5V / ±300mA

76%

EWS3-48D12

18 – 72 VDC

±12V / ±125mA

79%

★EWS3-48D15

18– 72 VDC

±15V / ±100mA

80%

* If you have any other specifications and models, you can contact our company directly.

dcdc module power supply characteristics

project

Test conditions

Min

Typ

Max

unit

Output voltage accuracy

Input voltage range, 100% load (main circuit)

±1

±2

%

Input voltage range, 100% load (auxiliary circuit)

±2

±5

Load adjustment rate

Load from 10% to 100% (main circuit)

±0.5

±0.75

From 10% to 100% load (auxiliary circuit)

±0.5

±1.0

Voltage adjustment rate

Input voltage range

±0.2

±0.5

Output short circuit protection

Sustainable, self-recovery

Ripple & Noise

20MHz bandwidth, nominal voltage input 100% load

35

75

mVp-p

Switching frequency

Input voltage range 100% load

120-300(PFM)

KHz

Temperature drift coefficient

Nominal voltage input 100% load, -40℃～ +85℃

±0.03

%/℃

Storage humidity

95

%

Operating temperature

Safe workspace for product compliance

-40

85

℃

Storage temperature

-50

125

The shell heats up when the product works

Nominal voltage input 100% load

20

Pin resistance to soldering temperature

The solder joint is 1.5mm from the edge of the shell, 10 seconds

300

Insulation strength

Test time for 1 minute, leakage current is less than 0.5mA

1500

VDC

Insulation resistor

Insulation voltage 500VDC

1000

MΩ

Cooling method

Natural air-cool

Housing material

Flame retardant and heat-resistant plastic

Average failure-free time

MIL-HDBK-217F@25℃

100

Ten thousand hours

weight

5

gram

Note: 1. Except for special instructions, the above data are measured under TA=25℃ and humidity <75%;
2. Other specifications can also be provided. Please contact our company for details.

Typical Applications

Notes on using:
 Requirements for input power supply
A low-impedance voltage source must be connected to the input end of the product. If the voltage source impedance is too high or the connection line between the voltage source and the input end of the product is too long, the product will be instable. Connecting a low ESR capacitor to the input end of the product (as close as possible to the input pin of the product) can effectively solve the occurrence of this problem. For example, a 24V input product can be connected to a 22μF capacitor.

② Reduce output ripple
If further reduction of output ripple is required, a suitable filter capacitor can be connected in parallel at the output end or connected to an "LC" filter network. It should be noted that the external capacitor at the output end cannot be too large, otherwise it may cause startup problems. Please refer to the product's *** output capacitive load requirements for details. The bandwidth of the "LC" filter network should be far from the product's operating frequency range. Generally speaking, connecting a low ESR filter capacitor to the output end can meet the requirements, usually Co=100uF.

③ Input current
When the input power supply voltage is unstable, please make sure that its output voltage fluctuation range meets the input requirements of the product; the output current of the input power supply must be sufficient to cope with the instantaneous start current Ip of the product, generally: Ip = 2-4*Iin-max.

④ This product cannot be used in parallel and does not support hot plugging.

Appearance size and pin mode