Bob,
What external frequency are you trying to sync to?
The TPS65251 will only sync to an external clock when two conditions are met:
1) The PGOOD signal is asserted.
2) The internal oscillator frequency is less than that of the external clock. …
Other Parts Discussed in Thread: TPS65251 Hello.
We are developing a new application where the TPS65251 is used to generate respectively 1.8V, 3.3V and 1.2V using DC/DC 1, 2 and 3. The product is powered at 12V.
While 1.8V and 1.2V (DCDC number 1 and…
Other Parts Discussed in Thread: TPS65251 , AM1808 , TPS65250 Questions about the TPS65251 datasheet:
On Page 13 (Overview) it says, “The device has two built-in LDO regulators. During a standby mode, the 3.3-V LDO and the 6.5-V LDO can be
used to…
Other Parts Discussed in Thread: TINA-TI Update of TINA9-TI Spice Model Libraries and Example Circuits
This note describes the step-by-step process for updating the TINA9-TI Spice Macro Libraries and Example circuits. The update is initiated by selecting…