Other Parts Discussed in Thread: TPS62802
Can you share me the expected values of below parameters for TPS62801 and TPS62802 ?
1. TON and TOFF.
2. Duty Cycle.
3. Ripple Frequency and Ripple Voltage range.
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Hi Siburaj,
Thanks for your question.
It is not clear to me what do you mean. All the parameters you are asking for are strictly dependent on the converter working conditions (VIN, VOUT, IOUT) and the passive components that you select.
If you are interested in our converters, please use our Power Designer (ti.com) for a quick evaluation.
Thanks,
Stefano
All information in this correspondence and in any related correspondence is provided “as is” and “with all faults”, and is subject to TI’s Important Notice (http://www.ti.com/corp/docs/legal/important-notice.shtml).
Hi Stefano,
Thanks for your quick reply.
My aim is to theoretically calculate the above parameters based on VIN, VOUT, IOUT and the passive components in my design and check whether the values are within the limits in my design.
If any theoretical equations available to calculate the above parameters can you share me.
Thanks & Regards,
Siburaj D.S.
Hi Siburaj,
This device has DCS control, therefore it is more difficult to theoretically compute the operating conditions with respect to standard fixed frequency converter.
Please refer both to the devices datasheet (TPS6280x 1.8-V to 5.5-V, 0.6A / 1-A, 2.3-µA IQ Step Down Converter 6-Pin, 0.35-mm Pitch WCSP Package datasheet (Rev. E) (ti.com)) and the following application note for further details (High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions).
Of course in PWM operation the frequency should remain around the typical value (4MHz) and the duty cycle still related to the standard buck equation VOUT/VIN.
Thanks,
Stefano
All information in this correspondence and in any related correspondence is provided “as is” and “with all faults”, and is subject to TI’s Important Notice (http://www.ti.com/corp/docs/legal/important-notice.shtml).