April 2004

9

M9999-042704

MIC2193

Micrel

transition faster than those with higher gate charge

requirements.

• For the same size inductor, a lower value will have

fewer turns and therefore, lower winding resistance.

However, using too small of a value will require more

output capacitors to filter the output ripple, which will

force a smaller bandwidth, slower transient response

and possible instability under certain conditions.

• Lowering the current sense resistor value will de

crease the power dissipated in the resistor. However,

it will also increase the overcurrent limit and will

require larger MOSFETs and inductor components.

• Use low ESR input capacitors to minimize the power

dissipated in the capacitors ESR.