Abstract: In accordance with an embodiment, a circuit includes: a pass transistor drive circuit including an digital input, and at least one output configured to be coupled to at least one pass transistor; a digital feedback circuit having a first analog input configured to be coupled to the at least one pass transistor, and a digital output coupled to the digital input of the pass transistor drive circuit; and an analog feedback circuit including a second analog input configured to be coupled to the at least one pass transistor, and an analog output coupled to an over voltage node of the pass transistor drive circuit, where the analog feedback circuit has a DC gain greater than zero.

Abstract: In accordance with an embodiment, a circuit includes: a pass transistor drive circuit including an digital input, and at least one output configured to be coupled to at least one pass transistor; a digital feedback circuit having a first analog input configured to be coupled to the at least one pass transistor, and a digital output coupled to the digital input of the pass transistor drive circuit; and an analog feedback circuit including a second analog input configured to be coupled to the at least one pass transistor, and an analog output coupled to an over voltage node of the pass transistor drive circuit, where the analog feedback circuit has a DC gain greater than zero.

Abstract: In accordance with an embodiment a circuit includes: a plurality of delay elements coupled in series, each delay element including an input node and an output node; a multiplexer having inputs coupled to the output node of each delay element of the plurality of delay elements; and a time measurement circuit including a time amplifier having an input coupled to an output of the multiplexer, and a counter coupled to an output of the time amplifier.

Abstract: A supply-to-digital regulation loop (SDRL) circuit, including a reference supply circuit and a local supply circuit. The reference supply circuit includes a reference supply-to-digital converter (SDC) to convert an analog reference supply voltage to a digital reference signal. The local supply circuit is coupled to the reference supply circuit. The local supply circuit includes a local SDC to convert an analog local supply voltage to a digital local supply signal based on a digital feedback signal, and a local monitoring circuit to monitor the digital feedback signal based on a comparison of the digital local supply signal with the digital reference signal routed from the reference SDC of the reference supply circuit.