- Confirm the pinout of the controller on schematic against the pinout of the data sheet.
- Have a component value calculator tool ready to check component values.
- Carefully check the choice of inductor and sense resistor.
- Carefully check the choice of output capacitors.
- Because the voltage and current feedback signals are fully differential, double check their polarity.
- CSP1 / CSN1
- CSP2 / CSN2
- CSP3 / CSN3
- VOUT_SENSE to VFB / GND_SENSE to GFB
- Make sure the pull up on the SDA, SCL lines are correct. Check if there is a bypass capacitor close to the device on the pull up VINTF rail to GND of the device.
- TI strongly recommends that the device GND be separate from the system and Power GND.
Note: Make sure to separate noisy driver interface lines. This is a critical layout rule.
The driver (TPS59603-Q1) is outside of the device. All gate-drive and switch-node traces must be local to the inductor and MOSFETs.