Q48SC12025 Datasheet, PDF(17/28 Page) Delta Electronics, Inc.

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Q48SC12025 Datasheet, PDF (17/28 Pages) Delta Electronics, Inc. – 300W DC/DC Power Modules

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SUPPORTED PMBUS COMMANDS

The main PMBus commands described in the PMBus 2.0 specification are supported by the module. Partial

PMBus commands are fully supported; Partial PMBus commands have difference with the definition in PMBus

2.0 specification. All the supported PMBus commands are detail summarized in below table

Command

Code

Command

description

Transf Compatible with

-er

standard

type PMBUS or not?

Data

Format

Default Range Data Expon

value limit units -ent

Note

OPERATION

Turn the module on

R/W Refer to below

0x01 or off by PMBUS

Bit field 0x80

byte description;

command

ON_OFF_CONFIG

Configures the

0x1D

combination of

Not support turn

R/W

(Neg Logic);

0x02 primary on/off pin

off delay and fall Bit field 0x1D

byte

0x1F

and PMBUS

time setup

(Pos Logic);

command

Clear any fault bits Send

CLEAR_FAULTS

0x03

Yes

that have been set byte

This command is

Stores operating

Send

STORE_DEFAULT_ALL

0x11 parameters from

Yes

byte

RAM to data flash

effective to the

/ parameter of all

command in this

table.

Restores operating

Send

RESTORE_DEFAULT_ALL 0x12 parameters from data

Yes

byte

flash to RAM

This command can't

/ be issued when the

power unit is running.

VOUT_MODE

VOUT_COMMAND

VOUT_MARGIN_HIGH

VOUT_MARGIN_LOW

FREQUENCY_SWITCH

0x20

Read

Read Vo data format

byte

0x21

Set the output

R/W

voltage normal value word

0x25

Set the output

voltage margin high

value

R/W

word

0x26

Set the output

voltage margin low

value

R/W

word

0x33

Set the switching

frequency

R/W

word

Yes

mode+exp 0x14

Default value=12.4V is

for Droop function

Yes

Vout Linear 12

Volts -12 (Current sharing),

~13.2

value=12V is for no

Droop function

Default value=13.02V is

10.2

for Droop function

Yes

Vout Linear 12.6

Volts -12 (Current sharing),

~13

value=12.6V is for no

Droop function

Default value=11.78V is

10.2

for Droop function

Yes

Vout Linear 11.4

Volts -12 (Current sharing),

~13

value=11.4V is for no

Droop function

Frequency

120 ~

Write command need

Yes

130

KHz -2

linear

180

module off condition

DS_Q48SC12025_03312017

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

P17

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