Digital Controller for an Interleaved Voltage Regulator - Inst.eecs ...
Digital Controller for an Interleaved Voltage Regulator - Inst.eecs ...
Digital Controller for an Interleaved Voltage Regulator - Inst.eecs ...
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Implementation of Optimal <strong>Voltage</strong> Positioning<br />
with I L<br />
<strong>an</strong>d I C<br />
sensing<br />
Vin<br />
Vref<br />
+<br />
_<br />
Ke<br />
error<br />
amplifier<br />
digital<br />
controller<br />
-<br />
L1<br />
I L<br />
Re<br />
Re*m<br />
Vc<br />
Co/m<br />
Re<br />
Co<br />
Iout<br />
Ic<br />
Vout<br />
-<br />
-<br />
Ic estimator<br />
Vo’ = Vout + Re * Iout<br />
Re * Iout = Re * (I L<br />
+ Ic) = Re * I L<br />
+ (Vc – Vout)<br />
Vo’ = Vc + Re * I L<br />
Adv<strong>an</strong>tage: Doesn’t add a resistive current sensor <strong>for</strong> Iout after Co (the voltage drop<br />
across such sensor would add to the ESR drop during tr<strong>an</strong>sients).
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