Patent ID: 11921149
Assignee: PSEMI CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 16:
17. A method, comprising:
testing a leakage current of a switch in a switching network in an integrated circuit, that, when connected to capacitors, forms a switched-capacitor network for transforming a first voltage into a second voltage, said switching network comprising a driver and a floating-regulator, wherein the switch is connected to the driver and controlled by the driver, and the driver is configured to receive charge from the floating-regulator, wherein said switching network comprises a first set of switches and a second set of switches, wherein switches from said first set of switches are arranged in series to define a first charge-transfer path that extends from an input of said switching network to an output of said switching network, wherein switches from said second set of switches are arranged in series to define a second charge-transfer path that extends from said input to said output, wherein said first charge-transfer path comprises nodes at which switches from said first set of switches connect to each other, wherein said nodes are configured to be connected to a first plurality of capacitors, wherein said second charge-transfer path comprises nodes at which switches from said second set of switches connect to each other, and wherein said nodes are configured to be connected to a second plurality of capacitors;
wherein testing said leakage current comprises:
causing a first current, at least a portion of the first current being used to bias said switch;
diverting said first current along a path such that said first current avoids interference with a measurement of a second current;
obtaining a measurement of said second current; and
estimating said leakage current based at least in part based on said measurement of said second current.