Schematic Symbol for BQ25713B: Address 2 I2C 1-4 cell NVDC Buck-...

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HIDRV1

SCL

CHRG_OK

SDA

CMPOUT

OTG/VAP

VBUS

*PROCHOT

LODRV1

EPAD

COMP1

HIDRV2

ILIM_HIZ

SW2

ACP

LODRV2

PGND

ACN

SRN

REGN

SRP

VDDA

VSYS

*BATDRV

CMPIN

COMP2

SW1

CELL_BATPRESZ

IBAT

IADPT

BTST1

BTST2

PSYS

cOONECT THIS CHIP WITH THE TYPICAL CONFIGURATION

themrcrugidor

@copilot cOONECT THIS CHIP WITH THE TYPICAL CONFIGURATION

copilot

To get your BQ25713 up and running, we'll follow the typical application circuit from its datasheet. I'll list the essential connections and components assuming typical values:

Key Connections

Power Connections:
- Connect VBUS to the input power source (typically a USB Type-C Power Delivery source).
- Connect ACP to the input power source positive rail.
- Connect ACN and SRN to the positive terminal of the sense resistor placed in series with the input power source ground.
- Connect PGND to the ground of the input power source.
- Connect COMP1 and COMP2 to their respective feedback compensation networks.
Switching Component Connections:
- Connect HIDRV1 and LODRV1 to the gates of the high-side and low-side MOSFETs, respectively, on the input inductor side.
- Connect HIDRV2 and LODRV2 to the gates of the high-side and low-side MOSFETs, respectively, on the output inductor side.
- Connect SW1 to the switching node between high-side and low-side MOSFETs on the input side.
- Connect SW2 to the switching node between high-side and low-side MOSFETs on the output side.
- Connect BTST1 and BTST2 to their respective bootstrap capacitors receiving charges from LODRV1 and LODRV2.
Battery Management Connections:
- Connect SRP to the positive terminal of the sense resistor placed in series with the battery ground.
- Connect BATDRV to the gate of the battery charge MOSFET.
- Connect CELL_BATPRESZ to a resistor divider network to sense the battery pack configuration.
- Connect IBAT to the negative terminal of the battery pack through an RC filter.
I2C Interface:
- Connect SCL and SDA to the I2C bus lines for communication with the microcontroller.
Other Connections:
- Connect OTG/VAP to the appropriate voltage adapter pin.
- EPAD (heat tab) is to be connected to the ground plane on your PCB.

Specified Connections

Power and Communication:
- Connect VBAT (your battery's positive terminal) to the positive rail of your battery pack.
- Connect VBUS to the input power source (USB Type-C PD).
- Connect ACP to the positive input power rail.
- Connect ACN to the other side of the input current sense resistor.
- Connect SCL to the I2C clock line.
- Connect SDA to the I2C data line.
Switching Nodes and MOSFETs:
- Connect HIDRV1 to the gate of the high-side MOSFET (input side).
- Connect LODRV1 to the gate of the low-side MOSFET (input side).
- Connect SW1 to the switching node (input side).
- Connect BTST1 to the bootstrap capacitor (input side).
- Connect HIDRV2 to the gate of the high-side MOSFET (output side).
- Connect LODRV2 to the gate of the low-side MOSFET (output side).
- Connect SW2 to the switching node (output side).
- Connect BTST2 to the bootstrap capacitor (output side).
Current Sensing and Protection:
- Connect SRP to the positive terminal of the battery's sense resistor.
- Connect SRN to the negative terminal of the battery's sense resistor.
- Connect ILIM_HIZ to a voltage set by a resistor divider to set input current limit.
- Connect CHRG_OK to the microcontroller to monitor the charging status.
- Connect CMPIN and CMPOUT to their respective compensation networks.
- Connect PSYS to a resistor divider for system power monitoring.
- Connect REGN to a capacitor to filter the internal regulator.
- Connect *PROCHOT to a thermal protection circuit (if used).

Here are the exact net connections per the typical design specs:

Connect VBUS:1 to USB_C_PD_Source:VOUT.
Connect ACP:3 to Input_Power_Rail:+.
Connect ACN:2 to Input_Sense_Resistor:$^1-$.
Connect PGND:27 to Ground:GND.
Connect REGN:28 to REGN_Cap:$^1+$.
Connect SCL:13 to I2C_Bus:SCL.
Connect SDA:12 to I2C_Bus:SDA.

External Components Setup

Inductors and Capacitors: Place the appropriate inductors and capacitors as specified by the datasheet to ensure the converter operates correctly.
Sense Resistors: Use appropriately valued sense resistors for current measurement at SRN and SRP.
Bootstrap Capacitors: Place bootstrap capacitors between BTST1-SW1 and BTST2-SW2.

This typical configuration will ensure your BQ25713 operates efficiently, managing the battery charging and power delivery as intended. Adjust component values and parameters based on your specific requirements and application needs. If you have any specific questions or adjustments, let me know!

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