SLUUCF7 April   2021 BQ25960

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 I/O Descriptions
  3. 2Test Summary
    1. 2.1 Equipment
    2. 2.2 Equipment Setup
    3. 2.3 Software Setup
    4. 2.4 Test Procedure
      1. 2.4.1 Initial Settings
      2. 2.4.2 Communication Verification
      3. 2.4.3 Switched Cap Mode Charge Verification
      4. 2.4.4 Bypass Mode Charge Verification
      5. 2.4.5 Dual BQ25960 Operation
      6. 2.4.6 BQ25611D Charge Verification
  4. 3PCB Layout Guidelines
  5. 4Board Layout, Schematic, and Bill of Materials
    1. 4.1 Board Layout
    2. 4.2 Schematic
    3. 4.3 Bill of Materials

1.2 I/O Descriptions

Table 1-2 lists the BQ25960EVM board connections and ports.
Table 1-2 EVM Connections
Jack Description
J1 VIN1 Positive rail of the priority input adapter or power supply
GND Ground
J2 VOUT Positive rail of the charger battery input
BATP Input connected to the positive terminal of the battery for remote battery voltage sensing
BATN Input connected to the negative terminal of the battery for remote battery voltage sensing
PACK- Negative rail of the charger battery input
J3 VIN2 Positive rail of the secondary input adapter or power supply
GND Ground
J4 VBUS Positive rail of the VBUS input to the charger ICs
GND Ground
J5 Communication port I2C communication port for use with the USB2ANY interface adapter
J6 Communication port I2C communication port for use with the EV2400 interface board
J7 VSYS Positive rail of the BQ25611D charger's system output voltage
GND Ground
J8 USB-C connector Provides power to VIN2 and has D+/D- lines for input source detection

Table 1-3 below lists the jumper connections available on this EVM.

Table 1-3 EVM Jumper Settings
Jumper Description Single BQ25960 Setting Dual BQ25960 Setting
JP1 BATP to VOUT connection. Installed Installed
JP2 ACDRV1 to GND connection. Connect this jumper if powering directly from VBUS, or if ACFET1/RBFET1 are removed. Not installed Not installed
JP3 U1 TSBAT or SYNCOUT connection. Connect to SYNCOUT if operating in primary/secondary mode. Installed between left pin and middle pin (connect to TSBAT) Installed between middle pin and right pin (connect to SYNCOUT)
JP4 ACDRV2 to GND connection. Connect this jumper if ACFET2/RBFET2 are removed. Not installed Not installed
JP5 U1 /INT pin connection to 3.3V pull-up rail. Installed Installed
JP6 U1 REGN pin connection to U1 TSBUS resistor network. Installed Installed
JP7 Different resistor connection for U1 TSBUS resistor network. Installed Installed
JP8 U2 I2C address and mode selection. Installed Installed
JP9 U1 I2C address and mode selection. Not installed Installed between top pin and middle pin (connect to R16)
JP10 U1 TSBUS pin connection to U1 TSBUS resistor network. Installed Installed
JP11 U2 TSBAT connection to TSBAT resistor network. Installed Installed
JP12 U2 REGN pin connection to U2 TSBUS resistor network. Installed Installed
JP13 SDA and SCL connection to 3.3V I2C pull-up rail. Installed Installed
JP14 Different resistor connection for U2 TSBUS resistor network. Installed Installed
JP15 U2 /INT pin connection to 3.3V pull-up rail. Installed Installed
JP16 U2 TSBUS pin connection to U2 TSBUS resistor network. Installed Installed
JP17 Connection from TSBAT resistor network to either U1 REGN pin or U2 REGN pin. Installed between top pin and middle pin (connect to REGN_M) Installed between top pin and middle pin (connect to REGN_M)
JP18 Input selection for 3.3V LDO Installed between top pin and middle pin (connect to VOUT) Installed between top pin and middle pin (connect to VOUT)
JP19 Different resistor connection for TSBAT resistor network. Installed Installed
JP20 D- connection for USB-C connector. Installed Installed
JP21 Charge enable connection for U4. Installed Installed
JP22 D+ connection for USB-C connector. Installed Installed
JP23 U4 thermistor NORMAL temperature setting. Install this jumper to simulate entering normal temperature region. Installed Installed

Out of the box, the BQ25960EVM is configured to evaluate the performance of the BQ25960 only. If the BQ25611D must also be evaluated, then the user should populate R29 and R32, as shown in the schematic in Figure 4-11.

Table 1-4 lists the recommended operating conditions for this EVM.

Table 1-4 Recommended Operating Conditions
Description MIN MAX UNIT
VIN1, VIN2, VBUS Input voltage at J1, J3, and J4 0 13 V
IVIN1, IVIN2, IVBUS Input current into J1, J3, and J4 5 A
VOUT Battery voltage at J2 0 5 V
IVOUT Battery charge current out of J2 8 A
TA Operating free-air temperature range –40 85 °C