Trans-inductor voltage regulator (TLVR) to reduce voltage hazards
Particular example embodiments described herein can provide for a system, an apparatus, and a method for a trans-inductor voltage regulator to reduce voltage hazards. The system, apparatus, and method can include, for example, a trans-inductor voltage regulator (TLVR) circuit that includes a multi-phase voltage regulator circuit; a plurality of phases of a primary winding connected in series. The plurality of phases includes a first phase and a last phase. The TLVR circuit can further include a ground located between the first phase and the last phase, and a compensation inductor situated such that at least one of the plurality of phases is between the ground and the compensation inductor.
1 . A trans-inductor voltage regulator (TLVR) circuit, comprising:
a multi-phase voltage regulator circuit;
a plurality of phases of a primary winding connected in series, wherein the plurality of phases includes a first phase and a last phase;
a ground located between the first phase and the last phase; and
a compensation inductor situated such that at least one of the plurality of phases is between the ground and the compensation inductor.
2 . The trans-inductor voltage regulator circuit of claim 1 , wherein the ground is located in a middle portion of the plurality of phases.
3 . The trans-inductor voltage regulator circuit of claim 1 , wherein the ground is located between an equal number of the plurality of phases.
4 . The trans-inductor voltage regulator circuit of claim 1 , wherein a first number of phases on a first side of the ground is different than a second number of phases on a second side of the ground.
5 . The trans-inductor voltage regulator circuit of claim 1 , wherein the trans-inductor voltage regulator circuit is configured to turn on a number of the plurality of the phases corresponding to a target response time.
6 . The trans-inductor voltage regulator circuit of claim 1 , wherein the trans-inductor voltage regulator circuit includes a pair of compensation inductors having a connection that is the ground, and wherein, when a peak voltage on a side of the compensation inductor is positive, a peak voltage on another side of the compensation inductor is negative.
7 . The trans-inductor voltage regulator circuit of claim 1 , wherein the compensation inductor includes a first side and an opposite second side, and wherein, when a peak voltage on one of the sides is positive, a peak voltage on another one of the sides is negative.
8 . The trans-inductor voltage regulator circuit of claim 1 , wherein a peak voltage on a first side of the compensation inductor and a peak voltage on a second side of the compensation inductor is below a voltage threshold.
9 . The trans-inductor voltage regulator circuit of claim 1 , wherein between seventy percent and fifty percent of the plurality of phases are on a first side of the ground, and between thirty percent and fifty percent of the plurality of phases are on an opposite second side of the ground.
10 . The trans-inductor voltage regulator circuit of claim 1 , wherein the plurality of phases connected in series is greater than twenty-five phases.
11 . A method, comprising:
determining a peak threshold voltage for a trans-inductor voltage regulator circuit that includes a plurality of phases of a primary winding connected in series, wherein the plurality of phases includes a first phase and a last phase, and wherein a compensation inductor is situated such that at least one of the plurality of phases is between a ground and the compensation inductor; and
configuring the ground between the plurality of phases in the trans-inductor voltage regulator circuit such that a peak voltage of the trans-inductor voltage regulator circuit does not exceed the peak threshold voltage.
12 . The method of claim 11 , wherein the compensation inductor includes a first side and an opposite second side, and wherein, when a peak voltage on the first side of the compensation inductor is a positive voltage, a peak voltage on the second side of the compensation inductor is a negative voltage.
13 . The method of claim 12 , wherein the positive peak voltage on the first side of the compensation inductor is about the same as an absolute value of the negative peak voltage on the second side of the compensation inductor.
14 . The method of claim 12 , wherein more than fifty percent of the phases are on a first side of the ground and less than fifty percent of the phases are on an opposite second side of the ground.
15 . The method of claim 11 , wherein between seventy percent and fifty percent of the phases are on a first side of the ground and between thirty percent and fifty percent of the phases are on an opposite second side of the ground.
16 . The method of claim 11 , wherein a total number of phases in the trans-inductor voltage regulator circuit is greater than twenty phases.
17 . The method of claim 11 , wherein the trans-inductor voltage regulator circuit is a single-secondary trans-inductor voltage regulator circuit or a multiple secondary trans-inductor voltage regulator circuit.
18 . A method for using a controller to manage a trans-inductor voltage regulator circuit, comprising:
determining a peak threshold voltage for the trans-inductor voltage regulator circuit, wherein the trans-inductor voltage regulator circuit includes a plurality of phases of a primary winding connected in series and the plurality of phases includes a first phase and a last phase, and wherein a compensation inductor is situated such that at least one of the plurality of phases is between a ground and the compensation inductor; and
limiting a number of phases that are activated such that a peak voltage of the trans-inductor voltage regulator circuit does not exceed the peak threshold voltage.
19 . The method of claim 18 , wherein the number of phases that are activated at the same time without exceeding the threshold voltage is determined and stored as a max_phase_fire threshold value.
20 . The method of claim 19 , wherein the max_phase_fire threshold value is stored in a voltage engine in a controller that controls the trans-inductor voltage regulator circuit.