My customer has experimented with modifying the EVM and has some problems.
Please advise for improvement.
・The input uses a stabilized power supply (33.6V / 30A), but the input current is limited to about 11A. Why not input more than 11A?
・ When trying to output 24V / 1.5A, the output voltage will be 20V.
I know the EVM specification is Min.6V. The resistance of UVLO setting is removed.
Also, to change the L value from 6.8uH to 2.8uH, 4.7uH (6.48mΩ, 11.7A) is inserted in parallel connection.
I would like to know the negative effects of parallel connection.
Please answer the following additional questions.
・Should I input to TP6 when applying VCC with an external power supply, or connect JP8 when connecting to BIAS?
・Changing the CS pin (slightly smaller than 8mΩ) improves efficiency. Is it necessary to adjust here while looking at the L constant and operation waveform?
・ Are there any concerns if the booster circuit is built at a later stage?