- #1
ssb2245
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I need someone to tell me if what I am saying is true or BS?
Switching Frequency: Is simply defined as the frequency (amount of times) the same operation occurs, in our case the amount of times per second each phase is switched on.
Duty Cycle: is thought of as the time the object is on divided by the total time the object can be on. It can be expressed as a percentage or ratio. For our purpose and explanation we can also think of it as Vo/Vi=duty cycle. Duty Cycle is used in the control scheme of many PWMs.
Efficiency and temperature are probably the biggest limiting factors behind transient response
every time the phase is working switching losses occur from the MOSFETs so you can’t just ramp up switching frequency
Switching losses (from MOSFETs) theoretically are one of the most significant factors that set the upper cap on switching frequency.
one huge factor that affects transient response as much or more than switching frequency is bulk output capacitor parasitics (ESR). Higher ESR from a capacitor ends up causing more ripple.
Another theory is that the actual size of a MSOFET designates a proportion to resistance, larger the MOSFET, the more resistance.
?
Switching Frequency: Is simply defined as the frequency (amount of times) the same operation occurs, in our case the amount of times per second each phase is switched on.
Duty Cycle: is thought of as the time the object is on divided by the total time the object can be on. It can be expressed as a percentage or ratio. For our purpose and explanation we can also think of it as Vo/Vi=duty cycle. Duty Cycle is used in the control scheme of many PWMs.
Efficiency and temperature are probably the biggest limiting factors behind transient response
every time the phase is working switching losses occur from the MOSFETs so you can’t just ramp up switching frequency
Switching losses (from MOSFETs) theoretically are one of the most significant factors that set the upper cap on switching frequency.
one huge factor that affects transient response as much or more than switching frequency is bulk output capacitor parasitics (ESR). Higher ESR from a capacitor ends up causing more ripple.
Another theory is that the actual size of a MSOFET designates a proportion to resistance, larger the MOSFET, the more resistance.
?