If the Lingte LT3789 is to output 12V10A, can it be directly connected in parallel with MOS?

QWE4562009

If the Lingte LT3789 is to output 12V10A, can it be directly connected in parallel with MOS? [Copy link]

If the Lingte LT3789 is to output 12V10A, can it be directly connected in parallel with MOS?

QWE4562009

If the Lingte LT3789 is to output 12V10A, can it be directly connected in parallel with MOS?

PowerAnts

Parallel connection is a last resort. To increase the current from 5A to 10A, just replace the MOS with a smaller Ron.

Lao Jiang's Law (2): Principles for selecting MOSFET: For the same package, mainly look at Ron;

Note: If the Ron is small, the current is basically sufficient. If the current is a certain number of times higher than the standard, the Ron of a tube with a large current may not be small. The voltage is not mentioned.

PowerAnts

To add an old Chiang's law (1): For flyback, it is better to specify Vor first, then calculate the duty cycle and turns ratio;

Note: Selecting the maximum Vor that the MOSFET can withstand under the highest input voltage can obtain a larger duty cycle and reduce the switch tube loss; it can increase the turns ratio and reduce the voltage stress of the secondary side rectifier diode.

QWE4562009

PowerAnts posted on 2019-8-27 13:30 Parallel connection is a last resort. To increase 5A to 10A, just replace the MOS with a smaller Ron. Lao Jiang's Law (2): Principles for selecting MOSFETs: Same package...

Lao Jiang? Hahaha who is this?