Getting Started with the PCA9452A-EVK

2.1 Board Features

• Six buck regulators
  • One 6 A buck regulator with DVS (BUCK1 and BUCK3 are in Dual Phase)
  • One 3 A buck regulator with DVS
  • One 3 A buck regulator
  • Two 2 A buck regulators
• Five linear regulators
  • Two 10 mA LDOs
  • One 150 mA LDO
  • One 200 mA LDO
  • One 300 mA LDO
• 32.768 kHz crystal oscillator driver and buffer output
• Two-channel logic level translator
• System features
  • 2.85 V to 5.5 V operating input voltage range
  • Power ON/OFF control
  • Standby/run mode control
  • Smart DVS control
  • Interrupt configuration
  • Fm+ 1 MHz I²C Interface (via FTDI USB to I²C cable)

2.2 Board Description

This evaluation board features the PCA9452A power management IC. The kit integrates all hardware needed to fully evaluate the PMIC. It integrates a communication bridge based on FTDI to interface with the PCA9452A GUI software interface to fully configure and control the PMIC.

2.3 Board Components

Identify the different main components of the board.

1. PCA9452A PMIC
2. VPWR and GND input power connectors
3. I²C connector
4. I²C pull up voltage jumper (I2C_PU)
5. Kelvin sense connector
6. Digital IO connector
7. BUCK1 and BUCK3 output test points
8. BUCK3 Feedback connection
9. BUCK2 and BUCK6 output test points
10. BUCK4 and BUCK5 output test points
11. Load switch output test point

Installing software is necessary to work with this evaluation board.

• Go to: PCA945A-EVK
• Extract the zip file PCA9452_EVB_GUI.zip into selected folder. No need to install. (if password is asked during unzip, then type “NXP”)
• Install the FTDI cable driver from website D2XX Drivers
• Run the file PCA9452.exe. The interface window is shown below

Interface Window

Interface Window

3.1 GUI Setup

After turning on the power supply and plugging in the USB part of the FTDI cable, the GUI detects the cable automatically. Select the cable type (FT2TRWH9) from the drop-down menu, and then click “Connect” button.

On the “Device connection status” section (right bottom part of the screen), the GUI shows “Connected” with green light.

PCA9452A-EVK Test Setup

4.1 Evaluation Board Connection

PCA9452A-EVK Connections

4.2 Configure and Power the Board

1. Connect the wires of the FTDI cable on the following pins as shown in Figure 4, and make sure the Connect both SDAs, SCL, GND, and the 3.3 V wires from the FTDI cable as mentioned in Figure 4 above

Power supply is turned off and the USB connector is disconnected during the wiring stage:

2. Connect both SDAs, SCL, GND, and the 3.3 V wires from the FTDI cable as mentioned in Figure 4 above
   1. SCL serial clock signal (orange cable) should be connected to pin 5 of the 'Digital IO' connector (J3).
   2. Both SDA serial data wires (yellow and green cables) should be connected to create bidirectional data. Connect yellow cable to pin 3, and green cable to pin 4 of the 'Digital IO' connector (J3).
   3. GND ground signal (black cable) should be connected to pin 6 or pin 2 of the 'Digital IO' connector (J3).
   4. Remove jumper from J11. 3.3 V supply wire (red cable) from FTDI cable should be connected to pin 2 of the 'I2C_PU' connector (J11).
3. With the power supply turned off, connect 5 V power supply to LK1 connector and corresponding ground to LK5
4. Turn ON power supply.
5. Connect USB connector of the FDTI cable to PC.

Board Information

• UM11907, PCA9452A-EVK Evaluation Board User Manual
• PCA9452 Evaluation Board Design Files
• PCA9452 Evaluation Board Schematics

Additional References

In addition to our PCA9452: PCA9452 Power Management IC for i.MX 93x Auto Processor page, you may also want to visit:

Application pages: Application page: Driver Monitoring Systems (DMS) and Occupant Monitoring Systems