Datasheet

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MURATA-PS DEFINED COMMANDS (01-CFH REFER TO PMBUS 1.2 SPEC)
DBh: MFR_CURRENT_SHARE_CONFIG
Bits Purpose Value Meaning
7:1 0000000 Reserved
0
Droop Current Share
Control
0 Current share disabled
1 Droop current share mode enabled
DDh: MFR_PRIMARY_ON_OFF_CONFIG
Bits Purpose Value Meaning
7:3 00000 Reserved
2
Controls how the
unit responds to the
CONTROL pin
0 Unit ignores the primary ON/OFF pin
1
Unit requires the primary ON/OFF pin to be
asserted to start the unit.
1
Polarity of primary
ON/OFF logic
0 Active low (Pull pin low to start the unit)
1 Active high (Pull high or open to start the unit)
0 0 Reserved
DEh: MFR_ PGOOD_POLARITY
Bits Purpose Value Meaning
7:1 0000000 Reserved
0
Power good polarity
of pin 12
0
Negative logic, output low if Vout rises to
specifi c value
1
Positive logic, output high if Vout rises to
specifi c value
Notes:
1. a) Unit restores the entire contents of the non-volatile User Store memory when power up
b) PEC is supported
c) Max bus speed: 400kHZ
d) SMBALERT# is supported
e) Linear data format used
f) addressing: If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default
PMBus address 119d is assigned instead.
2. Not supported items:
100101XXb Margin Low(Ignore Fault),
101001XXb On Margin High(Ignore Fault)
3. Restart delay of turned off by OPEATION or CONTROL or primary on/off is 200ms
4. Unit will shutdown 1 second for protection , then recover automatically.
5. Restart delay unit: 500ms, lower limit: 500ms.
Turn off delay unit: 0ms, lower limit: 0ms
if bits 7:6=11b, restart delay is 500ms
6. Restart delay unit and Turn off delay unit are same as note 5
Bits 7:6: 00b,01b,10b are not supported
7. Restart delay unit: 200ms, lower limit: 200ms.
Turn off delay unit:0ms, lower limit: 0ms
if bits 7:6=11b, restart delay is 200ms
8. Temperature of baseplate side
9. Unit's actual information
10. Default value of DROOP CURRENT SHARE ENABLED mode: 0x01
Default value of DROOP CURRENT SHARE DISABLED mode: 0x00
11. Locked to 10m in DROOP CURRENT SHARE mode; confi gurable and default value is 0m in
CURRENT SHARE DISABLED mode
12. Default value of negative logic: 0x04
Default value of positive logic: 0x06
13. Unit can receive any value for VOUT_TRIM command, but Vout is limited to 8.1~13.2V, if calcu-
lated Vout exceeds limit, then equal to limit.
14. Value of 0 is acceptable, which is the same as lower limit to unit.
15. Default value of without "B" suffi x: 120°C
Default value of with "B" suffi x: 125°C
16. Confi gurable while without "S" suffi x locked while with "S" suffi x
On/Off 2 pin VOUT_DROOP TON_DELAY TOFF_DELAY TON_RISE TOFF_FALL
-- -- -- -- -- --
On/Off 2 confi gurable confi gurable confi gurable confi gurable confi gurable
On/Off 2 locked to 0x000A locked to 0x0001 locked to 0x0000 locked to 0x0000 locked to 0x0000
DBQ/DVQ Series
420W Digital Fully Regulated Intermediate
DC-DC Bus Converter
MDC_DBQ Series.B02Δ Page 24 of 31
OVERALL (CONT.)