Active On-Die Suppression of Power Supply Noise

Abstract

An active on-chip circuit is demonstrated in 130nm CMOS for the suppression of on-chip power supply noise due to power distribution resonance. Testchip measurement results indicate up to 40% reduction in power supply noise during clock/power gating at a 2% power and 6% area overhead cost. Oscillation time is reduced by 50%. Simulation results show that comparable overshoot/undershoot and ringing control via on-chip decoupling would require significantly more area and power due to leakage, particularly at 90nm and below