Power module
Budget: €8 – €30 EUR
Hello,
The project consist of designing a power module with the following properties:
-power input at 5V from USB or from an auxiliary input
-1-cell battery charging
-Power output: 5V, 3.3V and I2C connection to the battery charger IC
-PWR button of type Press-ON-Press-OFF toggle action to cut the 3.3V and 5V output
Blocks (see the attached picture):
-1-cell battery charger and booster (to 5V) using the IP5306-I2C chip: see (4) on the picture
-DC-DC converter (from battery or 5V) to 3.3V: see (3) on the picture
-Two power input: 5V (from USB) and 5V Auxiliary: see (2) on the picture
-Latching push button power switch: see (1) on the picture. Behavior:
.The PWR button is of type Press-ON-Press-OFF toggle action to cut the 3.3V and 5V power output (at J4)
.Usage: A short button press (on the “push button” on the board) latches the circuit ON and another toggles it back OFF.
.The behavior of the PWR_BTN_N pin (of J4) is like the PWR button: of type Press-ON-Press-OFF toggle action, to cut the 3.3V and 5V power. The PWR_BTN_N pin can be connected to external microcontroler to get the same behavior
Interface of the circuit:
-Power input: 5V supply from USB (J1) of from another power auxiliary (J2) input
-Rechargeable 1-cell battery (J3)
-Output (J4)
-Power: 5V, 3.3V, GND
-Signal output: I2C and PWR_BTN_N pin to switch on/off the circuit
-Latching push button power switch (PWR) to switch on/off the circuit
Datasheets:
-IP5306-I2C
.https://forums.futura-sciences.com/attachments/electronique/446876d1633328412-led-12-volts-alimentee-usb-5-v-decharge-5-v-ip5306-injoinic-1-.pdf
.https://sharvielectronics.com/wp-content/uploads/2021/07/IP5306-I2C-registers.pdf
-SY8089A1
https://sharvielectronics.com/wp-content/uploads/2021/07/IP5306-I2C-registers.pdf
Task to Do
1)Discuss about the picture: suggest ideas, comment, modify…
2)Schematics design with KICAD: (1) and (2). (3) and (4) is provided on the circuits datasheets
3)Component choice: appropriate values (current, voltage...), compact dimensions
4)Do PCB traces: target PCB dimensions: 20x20mm
RESPONSE FROM CANDIDATES WITHOUT EXPLANATION ON HOW TO PROCEED THE TASKS 1 to 5 WILL BE IGNORED.
The project consist of designing a power module with the following properties:
-power input at 5V from USB or from an auxiliary input
-1-cell battery charging
-Power output: 5V, 3.3V and I2C connection to the battery charger IC
-PWR button of type Press-ON-Press-OFF toggle action to cut the 3.3V and 5V output
Blocks (see the attached picture):
-1-cell battery charger and booster (to 5V) using the IP5306-I2C chip: see (4) on the picture
-DC-DC converter (from battery or 5V) to 3.3V: see (3) on the picture
-Two power input: 5V (from USB) and 5V Auxiliary: see (2) on the picture
-Latching push button power switch: see (1) on the picture. Behavior:
.The PWR button is of type Press-ON-Press-OFF toggle action to cut the 3.3V and 5V power output (at J4)
.Usage: A short button press (on the “push button” on the board) latches the circuit ON and another toggles it back OFF.
.The behavior of the PWR_BTN_N pin (of J4) is like the PWR button: of type Press-ON-Press-OFF toggle action, to cut the 3.3V and 5V power. The PWR_BTN_N pin can be connected to external microcontroler to get the same behavior
Interface of the circuit:
-Power input: 5V supply from USB (J1) of from another power auxiliary (J2) input
-Rechargeable 1-cell battery (J3)
-Output (J4)
-Power: 5V, 3.3V, GND
-Signal output: I2C and PWR_BTN_N pin to switch on/off the circuit
-Latching push button power switch (PWR) to switch on/off the circuit
Datasheets:
-IP5306-I2C
.https://forums.futura-sciences.com/attachments/electronique/446876d1633328412-led-12-volts-alimentee-usb-5-v-decharge-5-v-ip5306-injoinic-1-.pdf
.https://sharvielectronics.com/wp-content/uploads/2021/07/IP5306-I2C-registers.pdf
-SY8089A1
https://sharvielectronics.com/wp-content/uploads/2021/07/IP5306-I2C-registers.pdf
Task to Do
1)Discuss about the picture: suggest ideas, comment, modify…
2)Schematics design with KICAD: (1) and (2). (3) and (4) is provided on the circuits datasheets
3)Component choice: appropriate values (current, voltage...), compact dimensions
4)Do PCB traces: target PCB dimensions: 20x20mm
RESPONSE FROM CANDIDATES WITHOUT EXPLANATION ON HOW TO PROCEED THE TASKS 1 to 5 WILL BE IGNORED.