MotorKit-91F267-MC User Guide
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© Fujitsu Microelectronics Europe GmbH
3.10 Current measurement
(JP: 43, 46, 48, 51, 59, 41, 47, 52, 53)
JP43, JP48, JP48, JP51
These jumpers select if the internal or external current signals are connected to
the MCU analog inputs AN0-AN3.
JP59
This solder jumper selects an offset defined by R99 and R102 which is added
to the internal phase current values (2.5V by default, R99 = R102 = 10k)
JP41, JP47, JP52, JP53
These solder jumpers can be used to bypass the measurement shunts, when
they are not mounted or to reduce the power dissipation when not used by the
application.
Jumper Setting
Description
Open
Shunt for phase A current measurement used
JP41
Closed
Shunt for phase A current measurement bypassed
Open
Shunt for phase B current measurement used
JP47
Closed
Shunt for phase B current measurement bypassed
Open
Shunt for phase C current measurement used
JP52
Closed
Shunt for phase C current measurement bypassed
Open
Shunt for DC bus current measurement used
JP53
Closed
Shunt for DC bus current measurement bypassed
1-2
The current of the internal power stage phase A is
measured
JP43
2-3
The phase A current sense signal of an external power
stage is passed to the MCU
1-2
The current of the internal power stage phase B is
measured
JP46
2-3
The phase B current sense signal of an external power
stage is passed to the MCU
Closed
The phase C current sense signal of an external power
stage is passed to the MCU
JP48
Open
No connection to AN2
1-2
The current of the internal power stage DC bus is
measured
JP51
2-3
The DC bus current sense signal of an external power
stage is passed to the MCU
1-2
No offset on phase current values
JP59
2-3
offset defined by R99 / R102 is added to internal phase
current values
In case an external power stage is used, the external power stage has to supply adequate
voltage levels of the measured values as well as conditioned signals.
