VALIDATION CIRCUIT FOR REFERENCE VOLTAGE SHIFTED DATA

摘要

A controller (10) includes a high-side circuit (14), a low-side circuit (16), a level-shift circuit (28), and a data-validation circuit (32). The high-side circuit (14) is referenced to an offset-voltage reference that is offset voltage-wise relative to a ground reference of the controller (10). The low-side circuit (16) is operable to output a control signal (24) for the high-side circuit (14). The control signal (24) is referenced to the ground reference. The level-shift circuit (28) is configured to output a shifted signal (30) to the high-side circuit (14) that is referenced to the offset-voltage reference and based on the control signal (24). The data-validation circuit (32) is configured to receive the shifted signal (30), determine a first value (34) of the shifted signal (30) at a first instant, determine a second value (38) of the shifted signal (30) at a second instant different in time from the first instant, and validate the shifted signal (30) based on a determination that the first value (34) and the second value (38) correspond.