High-Efficiency 225W 28V DC Power Module – Dual Independent 28V Outputs, Low Ripple, Harsh-Environment Ready

1

Input Voltage Range

24 – 32 VDC

Nominal 28 V

2

Rated Power

225W

derating curve starts at +70 °C

3

Output Voltage Accuracy

≤±1%

Under nominal load, nominal input,

and room temp

4

Load regulation

≤ ±0.1%

when load current varies from no-load to full-load

5

Line regulation

≤ ±0.1%

over input range 24–32 V

6

Output ripple (peak-to-

peak)

≤100 mV p-p

0.1 Hz–100 MHz;

Measured at steady load;

Bandwidth: 20 MHz

7

Overshoot

<5% during

transient

no sustained ringing

8

Start-up time

< 300 ms

VIN applied to output within regulation ±1%

9

Hold-up time

≥ 10 ms

from loss of VIN to output voltage

10

Output 1

+28V/2.5A

independent power system

11

Output 2

+28V/5A

independent power system

12

Efficiency

≥ 90%

For 70% to 100% load

13

over-temperature protection

90ºC(min);

125ºC(max)

Power supply should work at full for

1 hour at 70ºC

14

Output overcurrent protection

①    4.6 ②7.1

②    6.3 ②9.5

used as a test indicator

15

Output overvoltage protection

33V(min);

36V(max)

16

Load 2 output delay

>50mS

Dimensions

180x140x30 mm

Mounting

Three holes (4mm taped; 10mm deep) on edge of cavity

1-8

+28V ± 4VDC

Power In

9-15

+28V GND

1-5

+28V/2.5A

Power Out

6-9

+28V GND

1-6

+28V/5A

Power Out

7-10

Power GND

11

RS422 Rx+

Industrial PC to Module

13

RS422 Tx+

Module to Industrial PC

14

RS422 Tx-

Module to Industrial PC

15

Signal GND

Byte_1

Frame Header

0xAB

Byte_2

0xA0

Byte_3

OUTPUT 1

0x00

OFF

0xAA

ON

Others

DO NOTHING

Byte_4

XOR Checksum

--

XOR all bytes of header and data

Byte_5

Frame Footer

0xFA

Byte_6

0XAA

Byte_1

Frame Header

0xBB

Byte_2

0xB0

Byte_3

Health Enquiry

0x11

Byte_4

XOR Checksum

--

XOR all bytes of header and data

Byte_5

Frame Footer

0xFA

Byte_6

0XAA

Byte_1

Frame Header

0xBB

Byte_2

0xB0

Byte_3

Input Voltage

0x1C

Refer to table below

Byte_4

Current 1

0xXX

Byte_5

Current 2

0xXX

Byte_6

XOR Checksum

--

XOR all bytes of header and data

Byte_7

Frame Footer

0xFA

Byte_8

0XAA

Input

voltage

32V

0x20

Voltage range depends upon XADC so minimum and maximum could be adjusted as OEM desires

.

.

28V

0x1C

.

.

24V

0x18

Output

Currents

0A

0x00

Current range and resolution depends upon the current   sense amplifier and XADC. So OEM can adjust both as per actual implementation. However we desire a good

resolution.

0.024

0x01

.

.

.

.

6A

0xFA

Byte_1

Frame Header

0xCB

Byte_2

0xC0

Byte_3

Error Code

--

0x01 (Checksum Error)

0x02 (Invalid

Command)

0x03(Parameter

Byte_4

XOR Checksum

--

XOR all bytes of header and data

Byte_5

Frame Footer

0xFA

Byte_6

0XAA

1

EMC/EMI

CE102, CS101, CS114, CS115, CS116, CS118, RE102,

RS103

2

Low Temperature

-40 ºC for 4hrs

3

High Temperature

+70 ºC for 4hrs

4

Random Vibration

6.06grms/10mins/Axis

5

Endurance

vibration

3.60grms, 01hr/X,Y and Z axis

6

Mechanical shock

30g/11ms/saw tooth/Half Sine

7

Linear acceleration

6g/3min

8

Thermal stress cycle

-20 ºC to +60 ºC @ 2 to 3 ºC/min 60min soak time, 2xCycle

9

Thermal shock

-40 ºC to +70 ºC in 1min

10

Low pressure

0.18bar for 15mins(40k ft)

11

Humidity test

60% to 90%, +20 ºC to +70 ºC for 75 hrs

12

Power on Aging

4hrs ON + 0.5hrs OFF (16 Cycles)

13

Isolation resistance

>10MΩ @ 200VDC for 60sec