Other Parts Discussed in Thread: TPS54618
Here are two questions on RT pin
1. from the block diagram in datasheet, RT pin is connected to Vsense through " OSC with PLL" , not sure on the reason why the it needs to be connected to Vsense.
To my understanding, it make sense to connect to slope compensation and PWM generator, but not to Vsense.
2. customer connect a 6.8nf cap in parallel with RT resistor and the part cannot work. So just want to know how RT resistor functions. Is it a part of internal RC oscillator or the part source a current on RT resistor to read the Fsw?