3.1 Power Supply

The PIC32-BZ6 Curiosity Board can be powered using any of the following sources:

A host PC can power the PIC32-BZ6 Curiosity Board over USB using a Type-A-to-Type-C USB cable connected to a USB-C® debug USB connector (J100).
A host PC can power the PIC32-BZ6 Curiosity Board over USB using a Type-A-to-Type-C USB cable connected to a USB-C® target USB connector (J103).
External 5V according to +/- marking on the board using 1x2 male header (J201).
4.2V Lithium battery (Li-ion/Li-Po) kit as follows:
- Connected to battery header (J204), JST PH, 2-pin, 2 mm pitch and right-angle male battery header.
- Crimp-style connector ensures battery polarity according to ± marking on the PIC32-BZ6 Curiosity Board.
- Battery is not included in the kit.
- Minimum recommended battery capacity is 400 mAh, with a battery charge voltage of 4.2V.

For selecting between power supply options 1, 2, and 3, configure the jumper caps according to the following table.

Table 3-2. Jumper Option (J202) to Select the PIC32WM-BZ6204UE Module Power Supply
Jumper (J202) Cap Position	Power Supply
J202 Pin 1 and Pin 2	External 5V supply from external 5V header (J201)
J202 Pin 3 and Pin 4	Debug USB supply from debug USB (J100)
J202 Pin 5 and Pin 6	Target USB supply from USB Type-C® connector (J103)

Battery management circuit automatically handles selection between USB power supply and battery supply.

The following are the three on-board voltage regulators on the PIC32-BZ6 Curiosity Board that power the circuitry on-board.

Buck Voltage regulator (U203) and Ripple blocker (IC200): MIC33153 buck regulator (U203) together with ripple blocker (MIC94325), generates 3.3V that powers the PIC32WM-BZ6204UE Module along with the associated circuits.
Linear Voltage regulator (U204): Curiosity board also has MCP1727 linear regulator (U204) to provide power from Linear regulator if necessary. Depopulate R243 and populate R244 to use this option.
Linear Voltage regulator (U201): Generates 3.3V that powers the USB hub IC (U201), PKOB4 main controller (U300), along with the associated circuits that connect the PKOB4 debugger to a host PC and MCP2200 USB to UART converter (U101).

For more details on the U203 and U204 voltage regulators, refer to the MIC33153 4 MHz 1.2A Internal Inductor PWM Buck Regulator with HyperLight Load® and Power Good (DS20006223) and MCP1727 1.5A, Low Voltage, Low Quiescent Current LDO Regulator Data Sheet (DS21999).

Figure 3-2. PIC32-BZ6 Curiosity Board Power Supply Block Diagram

The PIC32WM-BZ6204UE Module and associated peripherals can also be powered from:

External power supply header (J203) using external power supply (1.9–3.6V) for testing at different voltage levels apart from the default supply of 3.3V from the on-board regulator. To use the external power supply header, disconnect the on-board 3.3V supply according to the following table:

Table 3-3. Resistor Option to Select the PIC32WM-BZ6204UE Module Power Supply
On-board 3.3V Regulator	External Power Supply
Mount shunt resistor (R213) (default configuration) and remove shunt resistor (R217)	Remove shunt resistor (R213) (default configuration) and mount shunt resistor (R217)

Note: The maximum available current from the Debug USB Type-C connector (J100) is limited to 500 mA. The current is shared between charging the external battery (if connected) and powering the target application.