US 12,379,737 B2
Power supply and calibration adjustment based on detected current mirror error
Sujata Sen, Marina Del Rey, CA (US); Luca Petruzzi, Andover, MA (US); and Aviral Srivastava, Los Angeles, CA (US)
Assigned to Infineon Technologies Austria AG, Villach (AT)
Filed by Infineon Technologies Austria AG, Villach (AT)
Filed on Sep. 28, 2022, as Appl. No. 17/954,617.
Prior Publication US 2024/0103553 A1, Mar. 28, 2024
Int. Cl. G05F 1/575 (2006.01); G05F 1/46 (2006.01); G05F 3/26 (2006.01)
CPC G05F 1/575 (2013.01) [G05F 1/468 (2013.01); G05F 3/262 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a calibration circuit operative to:
produce an error signal indicative of an error associated with a current generator circuit generating a secondary current based on a reference current, the secondary current being proportional to the reference current;
derive an adjustment value from the error signal; and
apply the adjustment value to the current generator circuit, the applied adjustment value operative to reduce the error associated with the current generator circuit generating the secondary current based on the reference current.