ncp4200 ON Semiconductor, ncp4200 Datasheet - Page 26

• Manufacturer Part Number: ncp4200
• Description: Programmable Multi-phase Synchronous Buck Converter With Pmbus
• Manufacturer: ON Semiconductor

Code
0x4A
0x6A
Cmd
0x26
0x38
0x39
0x68
0x78
0x79
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
Default
0x00B2
0x012C
0x012C
0x0001
0x0000
0x0064
0x0000
0x00
VOUT_MARGIN_LOW
IOUT_CAL_GAIN
IOUT_CAL_OFFSET
IOUT_OC_WARN_LIMIT
POUT_OP_FAULT_LIMIT
POUT_OP_WARN
LIMIT
STATUS BYTE
STATUS WORD
Description
http://onsemi.com
Bytes
#
2
2
2
2
2
2
1
2
Byte
High
High
High
High
High
Low
Low
Low
Low
Low
Low
Low
26
Sets the output voltage when operation command is set to Margin
Low. Programmed in VID Mode.
Sets the ratio of voltage sensed to current output. Scale is Linear and
is expressed in 1/W
This offset is used to null out any offsets in the output current sensing
circuitry. Units are Amps
This sets the high current limit. Once this limit is exceeded
IOUT_OC_WARN_LIMIT bit is set in the Status_IOUT register and an
ALERT is generated. This limit is set in Amps.
This sets the output power over power fault limit. Once exceeded Bit
1 of the Status I
asserted (if not masked).
This sets the output power over power warn limit. Once exceeded Bit
0 of the Status I
asserted (if not masked)
Bit
7
6
5
4
3
2
1
0
None of the
VOUT_OV
IOUT_OC
Name
Above
BUSY
OFF
CML
Res
Res
Bit
7
6
5
4
3
2
1
0
7
6
5
4
OUT
OUT
Command gets set and the FAULT output gets
Command gets set and the ALERT output gets
None of the
A fault was declared because the NCP4200
was busy and unable to respond.
This bit is set whenever the NCP4200 is not
switching.
This bit gets set whenever the NCP4200 goes
into OVP mode.
This bit gets set whenever the NCP4200
latches off due to an overcurrent event.
A Communications, memory or logic fault has
occurred.
A fault has occurred which is not one of the
above.
VOUT_OV
I
IOUT_OC
OUT
Above
Name
V
CML
MFR
OFF
Res
Res
Res
Res
OUT
/P
OUT
Comment
This bit is set whenever the
NCP4200 is not switching.
This bit gets set whenever the
NCP4200 goes into OVP mode.
This bit gets set whenever the
NCP4200 latches off due to an
overcurrent event.
A Communications, memory or
logic fault has occurred.
A fault has occurred which is not
one of the above.
This bit gets set whenever the
measured output voltage goes
outside its power good limits or
an OVP event has taken place,
i.e. any bit in Status V
This bit gets set whenever the
measured output current or
power exceeds its warning limit
or goes into OCP. i.e. any bit in
Status I
A manufacturer specific warning
or fault has occurred.
Description
OUT
Description
is set.
OUT
is set.