Optimization of the voltage regulators and voltage noise for the power delivery network

In order to reduce both the power loss of the switched capacitor converter integrated in the on-chip power delivery network and the voltage noise at the load, this paper proposes an optimization method to optimize the capacitance allocation between the flying capacitors of the switched-capacitor converter (SCCs) and the decoupling capacitors at the load. By formulating and solving the inequality-constrained nonlinear programming problem, the SCCs’ flying capacitance and decoupling capacitance can be optimally allocated and the sum of power loss and voltage noise is effectively reduced. Experimental results show that the joint optimization of the SCCs’ capacitance and decoupling capacitance can reduce the sum of power loss and voltage noise by about 11%~28%. For larger power deliver networks, this method can efficiently reduce the power loss and voltage noise.