OKDL-T Datasheet, PDF (27/31 Pages) Murata Power Solutions Inc. – 12A Digital PoL DC-DC Converter Series

OKDL-T/12-W12-xxx-C
12A Digital PoL DC-DC Converter Series
Address
0x00
0x01
0x02
0x03 - 0x07
0x08
0x09 - 0x0B
0x0C
0x28
0x2C - 0x2D
0x37
0x40 - 0x44
0x48 - 0x4B
0x61
0x78 - 0x7B
0x7C - 0x7F
Comment
General Call Address / START byte
CBUS address
Address reserved for different bus format
Reserved for future use
SMBus Host
Assigned for Smart Battery
SMBus Alert Response Address
Reserved for ACCESS.bus host
Reserved by previous versions of the SMBus specification
Reserved for ACCESS.bus default address
Reserved by previous versions of the SMBus specification
Unrestricted addresses
SMBus Device Default Address
10-bit slave addressing
Reserved for future use
I2C/SMBus – Timing
Setup and hold times timing diagram
The setup time, tset, is the time data, SDA, must be stable before
the rising edge of the clock signal, SCL. The hold time thold, is the
time data, SDA, must be stable after the falling edge of the clock
signal, SCL. If these times are violated incorrect data may be captured
or meta-stability may occur and the bus communication may fail. All
standard SMBus protocols must be followed, including clock stretch-
ing. Refer to the SMBus specification, for SMBus electrical and timing
requirements.
The bus-free time (time between STOP and START packet) accord-
ing to Electrical Specification must be followed.
The product supports PEC (Packet Error Checking) according to the
SMBus specification.
In operation cases according to the list below the product’s control-
ler will be executing processor-intensive tasks and may not respond
to PMBus™ commands.
During the presence of an overcurrent fault.
Just after the output voltage has been enabled. It is recommended to wait
until PG is asserted (or the equivalent time) before sending commands.
When sending subsequent commands to the same unit it is recommended
to insert additional delays after write transactions according to the table
below.
PMBus™ Command
STORE_USER_ALL
STORE_DEFAULT_ALL
DEADTIME_GCTRL
USER_CONF
MANUF_CONF
RESTORE_USER_ALL
RESTORE_DEFAULT_ALL
FREQUENCY_SWITCH
VOUT_DROOP
IOUT_CAL_GAIN
ADAPTIVE_MODE
FEEDBACK_EFFORT
LOOP_CONFIG
COMP_MODEL
ZETAP
Delay after Write before Additional Command
500 ms
350 ms
10 ms
0.5 ms
PMBus™ Commands
The product is PMBus™ compliant. The following table lists all the
implemented PMBus™ read commands. For more detailed informa-
tion see PMBus™ Power System Management Protocol Specification;
Part I – General Requirements, Transport and Electrical Interface and
PMBus™ Power System Management Protocol; Part II – Command
Language.
Designation
Standard PMBus™ Commands
Control Commands
PAGE
OPERATION
ON_OFF_CONFIG
WRITE_PROTECT
Output Commands
CAPABILITY (read only)
VOUT_MODE (read Only)
VOUT_COMMAND
VOUT_TRIM
VOUT_CAL_OFFSET
VOUT_MAX
VOUT_MARGIN_HIGH
VOUT_MARGIN_LOW
VOUT_TRANSITION_RATE
VOUT_DROOP
MAX_DUTY
FREQUENCY_SWITCH
VIN_ON
VIN_OFF
IOUT_CAL_GAIN
IOUT_CAL_OFFSET
VOUT_SCALE_LOOP
VOUT_SCALE_MONITOR
COEFFICIENTS
Fault Limit Commands
POWER_GOOD_ON
POWER_GOOD_OFF
VOUT_OV_FAULT_LIMIT
VOUT_OV_WARN_LIMIT
Code Impl*
00h No
01h Yes
02h Yes
10h Yes
19h Yes
20h Yes
21h Yes
22h Yes
23h Yes
24h Yes
25h Yes
26h Yes
27h Yes
28h Yes
32h No
33h Yes
35h Yes
36h Yes
38h Yes
39h Yes
29h No
2Ah No
30h No
5Eh Yes
5Fh Yes
40h Yes
42h No
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MDC_OKDL-T/12-W12-xxx-C.A02 Page 27 of 31