JAJSMY9 April 2022 TPSM63606E
PRODUCTION DATA
Connect a resistor, designated as RRT in Figure 8-1, between RT and AGND to set the swiching frequency within the range of 200 kHz to 2.2 MHz. Use Equation 5 or refer to Figure 7-8 to calculate RRT for a desired frequency.
Refer to Table 8-1 or use the simplified expression in Equation 6 to find a switching frequency that sets an inductor ripple current of 25% to 40% of the 6-A module current rating at nominal input voltage:
where
Note that a resistor value outside of the recommended range can cause the module to shut down. This prevents unintended operation if the RT pin is shorted to ground or left open. Do not apply a pulsed signal to this pin to force synchronization. Refer to Section 8.3.7 if clock synchronization is required.