GE

Data Sheet

CAR2548DC series dc-dc converters

Input: -36Vdc to -75Vdc; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A

December 6, 2013

©2013 General Electric Company. All rights reserved.

Page 10

Command

Hex

Code

Data

Field

Function

Vin_OV_fault_limit

55

2

Vin_OV_warn_limit

57

2

Set OV warn limit

Vin_UV_warn_limit

58

2

Set UV warn limit

Vin_UV_fault_limit

59

2

Set UV shutdown

Status_byte

78

1

Status_word

79

2

Status_Vout

7A

1

Status_Iout

7B

1

Status_input

7C

1

Status_temperature

7D

1

Status_CML

7E

1

Status_other

7F

1

Status_mfr_specific

80

1

Status_fan_1_2

81

1

Read_Vout

8B

2

Read output voltage

Read_Iout

8C

2

Read output current

Read_temperature

8D

2

Read Temperature

Read_Pout

96

2

PMBus revision

98

1

Mfr_ID

99

5

FRU_ID

Mfr_model

9A

15

Mfr_revision

9B

4

Mfr_location

9C

4

Mfr_date

9D

6

Mfr_serial

9E

15

Mfr_Vin_min

A0

2

36V (linear format)

Mfr_Vin_max

A1

2

75V (linear format)

Mfr_Iin_max

A2

2

27A (linear format)

Mfr_Pin_max

A3

2

950W (linear format)

Mfr_Vout_min

A4

2

10V (linear format)

Mfr_Vout_max

A5

2

15V (linear format)

Mfr_Iout_max

A6

2

71A (linear format)

Mfr_Pout_max

A7

2

850W (linear format)

Mfr_Tambient_max

A8

2

70C (linear format)

Mfr_Tambient_min

A9

2

-10C (linear format)

User_data_00

B0

48

User memory space

User_data_01

B1

48

User memory space

FRW_revision

D0

1

D3

2

Ilimit set (1/100A)

D4

2

Vout set (1/512V)

Fan_duty_cycle

D6

1

Duty_cycle in %

Fan_speed

D7

1

Control in duty cycle

Vprog_ext

D8

2

E0

2

1/512V

E1

2

1/100A

E2

2

Heat sink temp C

E3

2

01-OFF, 00-ON

E4

2

OT fault limit C

E5

2

OT fault recovery C

E6

2

High OV fault (1/512V)

E7

2

Low OV fault (1/512V)

Status Register Bit Allocation:

Register

Code

Bit

Function

Status_Byte

78

7

Busy

6

DC_ OFF

5

Output OV Fault detected

4

Output OC Fault detected

3

Input UV Fault detected

2

Temperature Fault/warning

detected

1

CML (communication fault)

detected

0

None of Below

Status_word

(includes Status_byte)

79

7

OV Fault/Warning detected

6

OC Fault/Warning detected

5

Input Fault/Warning detected

4

Mfr_specific register change

detected

3

DC_OFF

2

Fan Fault or Warning

detected

1

Other fault

0

Unknown

Status_Vout

7A

7

Vout OV Fault

6

Vout OV Warning

5

Vout UV Warning

4

Vout UV Fault

3

N/A

2

N/A

1

N/A

0

N/A

Status_Iout

7B

7

IOUT OC Fault

6

N/A

5

IOUT OC Warning

4

N/A

3

N/A

2

N/A

1

N/A

0

N/A

Status_input

7C

7

Vin OV Fault

6

Vin OV Warning

5

Vin UV Warning

4

Vin UV Fault

3

N/A

2

N/A

1

N/A

0

N/A

Status_temperature

7D

7

OT Fault

6

OT Warning

5

N/A

4

N/A

3

N/A

2

N/A

1

N/A

0

N /A