uInverter Board Connections

This document describes the connections on the uInverter board. For detailed review of the board, please refer to the schematics in the AMDC-Hardware repo.

Connections with the AMDC

PWM

The PWM connector on the uInverter board uses DB15 connector, similar to the Drive Outputs connector on the AMDC. Three-phase PWM signals A+, B+, C+ generated on the AMDC are carried over to the uInverter on this connector CONN2 - PWM.

Pin #	uInverter	AMDC
1	PWM A+	PWM_1
2	No connect	PWM_2
3	PWM B+	PWM_3
4	No connect	PWM_4
5	PWM C+	PWM_5
6	No connect	PWM_6
7	GND	GND
8	No connect	STS_A
9	No connect	STS_B
10	No connect	STS_C
11	No connect	STS_D
12	No connect	VPS
13	No connect	VDD
14	No connect	GNDPS
15	No connect	GND

Analog

For providing feedback of current and voltage (analog sensing), the uInverter board uses the RJSAE connector similar to the analog connector on the AMDC. Three phase current signals and the DC link voltage signal generated on the uInverter are fed back to the AMDC using connector CONN3 - ANALOG SENSING.

Pin Number	uInv Conn 1	AMDC Analog Conn 1	uInv Conn 2	AMDC Analog Conn 2
1	ISENSE_A	Analog P1	ISENSE_C	Analog P3
2	GND	Analog N1	GND	Analog N3
3	VCC+	+15V	No Connect	+15V
4	GND	GND	GND	GND
5	VCC-	-15V	No Connect	-15V
6	GND	GND	GND	GND
7	ISENSE_B	Analog P2	VDC_SENSE	Analog P4
8	GND	Analog N2	GND	Analog N4

External Connections

DC Voltage Connector

The 12V DC supply uses a barrel jack connector with ground-center as marked on the PCB. Here is the link to the datasheet of the connector.

Here is an example of a usable 12V wall-wart connector. A phoenix connector J7 is also provided for an alternative 12V supply connection.

Jumper connection

The phase connection Phoenix connectors are normal-closed (NC) connections. Hence, jumpers should be used to short ONLY the following connectors - J1, J2, J3, J4, J5 and J6. Here is a link to an example phoenix contact jumper.

For more details, please refer to the schematics.