Hi TI
I want to know that TPS54561 Oscillator type is a voltage controlled oscillator or not? Like ADI LTC3707 which supports switching frequency selection continously by PLLFLTR PIN voltage . thanks.
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Hi TI
I want to know that TPS54561 Oscillator type is a voltage controlled oscillator or not? Like ADI LTC3707 which supports switching frequency selection continously by PLLFLTR PIN voltage . thanks.
Hi,
The RT/CLK pin does not operate the same way as the LTC3707.
The TPS54561 can be configured with a resistor to ground to set a switching frequency or externally connected to a clock signal to synchronize the the new frequency. A DC voltage into the RT/CLK pin would not change the oscillator frequency.
Regards,
Jimmy
TPS54561 supports a changing of the switching frequecy continously when using external synchronous clock ?
Or the switching frequency could be changed during working state ?
The TPS54561 should be able to change in accordance with the external synchronous clock. The rising edge of the SW will be synchronized to the falling edge of the RT/CLK pin signal.
Hi Jimmy
Are there any documents about how to use the external synchronous clock of TPS54561? Or design examples?
Please refer to Section 7.3.12 Synchronization to RT/CLK Pin . This section details the documentation for the CLK synchronization feature.