3.1 Power Supply

The following are the list of sources to power the PIC32 WFI32E Curiosity Board:

External supply connector 5V (J201)
PKOB3 Micro-B USB connector (J302)
Target V_BUS Micro-B connector (J204)

The following table lists the power supply source details and its jumper positions.

Table 3-2. Power Supply Sources
Power Input	Description	Jumper Position (J202)⁽¹⁾
External supply connector 5V (J201)	Connect the PIC32 WFI32E Curiosity Board to an external 5V power supply	P/S-VIN (2-1)
PKOB3 Micro-B USB connector (J302)	Connect the Type-A male to micro-B USB cable to the USB debug port for power supply	PKOB-VIN (4-3)
Target V_BUS Micro-B connector (J204)	Connect the Type-A male to micro-B USB cable to the USB power port for power supply	V_BUS-VIN (6-5)
Note: Jumper (J202) in Figure 3-3

The following figure illustrates the jumper positions that power the PIC32 WFI32E Curiosity Board.

Figure 3-2. Jumper Configuration for Power Input

Note: Ensure that the 3V3_MOD and 3V3_IN (J102) are connected on the WFI32E01 carrier board.

Use the jumper (J202) to select the voltage source for the Curiosity board. The MCP1727 voltage regulator generates a +3.3V power supply for the MCU. PKOB3 turns on the board power (+5V and +3.3V rails) by driving the TARGET_POWER_ENABLE signal high to enable the MIC2005A switches (U200 and U304).