ZHCSMU0D July 2009 – December 2020 TPS23753A
The current-sense input for the DC-DC converter should be connected to the high side of the current-sense resistor of the switching MOSFET. The current-limit threshold, VCSMAX, defines the voltage on CS above which the GATE ON-time are terminated regardless of the voltage on CTL.
The TPS23753A provides internal slope compensation to stabilize the current mode control loop. If the provided slope is not sufficient, the effective slope may be increased by addition of RS per Figure 8-8.
Routing between the current-sense resistor and the CS pin must be short to minimize cross-talk from noisy traces such as the gate drive signal.