CY8CKIT-026 CAN and LIN Shield Kit Guide, Doc. No. 002-03798 Rev. *C
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Hardware
3.6.1
12 V Supply Input
A power jack (J11) is provided on the kit to give a 12 V/1 A input supply to the board. In addition, a
screw terminal (J12) is provided for a power supply of up to 12 V/1 A for the same. Maximum input
supply limit is 20 V/1 A, exceeding it may damage the board.
Figure 3-9. Power Jack Schematic
The Shield Kit has a pin on each CAN and LIN header (J17, J8, J14, and J5) that can be connected
to the VIN power supply of the kit. Using this option, you can power the Shield Kit with 12 V from any
one of the CAN/LIN connections. Another reason to provide this option is to power other CAN and
LIN shield boards (connected through CAN/LIN connectors) using this 12 V supply pin. With this,
you can avoid using multiple power adapters to supply different boards.
The J13 jumper is used to connect the VIN supply from/to the CAN1 connector pin (J17 pin9). The
J21 jumper is used to connect the VIN supply from/to the CAN2 connector pin (J8 pin9). The J16
jumper is used to connect the VIN supply from/to the LIN1 connector pin (J14 pin3). The J7 jumper is
used to connect the VIN supply from/to the LIN2 connector pin (J5 pin3).
Both the LIN circuits (transceivers) work only with 12 V input. The CAN1 circuit/transceiver requires
12 V for VBAT and 5 V for VCC. CAN2 circuit/transceiver works when it is powered with 5 V.
Warning:
The supply should only be given to any one connector. While supplying the power
through screw terminals, ensure that the polarities are proper as specified on the kit. It is
recommended to use short circuit protected power supply cables.
Warning:
Ensure extra care when providing the 12 V supply input to any of the J5, J8, J11, J12,
J14 or J17 connectors. The supply should only be given to any one connector at a time.
