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EVAL-IMM101T
Smart IPM evaluation board application note
Application Diagrams and Application Use Cases
10.2
IMM101T Application Use Cases
This chapter provides more details about most common application use cases for IMM100 series’ devices,
including necessary passive components and pin connections.
10.2.1
Sensorless Single Shunt
The sensorless single-shunt use case shown below is a most common application use case for IMM100 devices,
alowing lowest BOM cost and highest number of available programmable pins for system-level functions.
M
VSS
RXD0
TXD0
IS
Vbus
1M
1M
13.3k
Vbus sense
2K
Rs
10K
3.3V
Vsp
VrW
Vbus
V
sU
VrU
VrV
V
bW
V
b
V
V
ss
1
V
cc
P
1
.7
V
dd
P
2
.10
P2.9
P2.6
Vss2
P2.2
P2.0 / P4.6
P0.15
P0.14
VsU
VbU
VsV
VsW
P
2
.11
/
P
2
.13
3.3V
VsV
VsW
C_REF
AI N2
15V
Vbus sense
AI N6
Options for Input Set Point:
1- Analog Input Vsp to pin34 P2.0
2- UART input through P0.14 and P0.15
3- Duty (PWM) or frequency input on pin34 P4.6
Other Pins available to the user:
P2.6, P2.2, P1.7
100
220pF
Figure 31
IMM101T Sensorless, single shunt configuration
The single shunt configuration is the default current sensing configuration for the EVAL-IMM101T evaluation
board.
