US 11,990,902 B2
Open-drain bus repeater and system comprising the same
Katarzyna Nowak, Nijmegen (NL); and Geethanadh Asam, Nijmegen (NL)
Assigned to Nexperia B.V., Nijmegen (NL)
Filed by NEXPERIA B.V., Nijmegen (NL)
Filed on May 31, 2022, as Appl. No. 17/828,552.
Claims priority of application No. 21177187 (EP), filed on Jun. 1, 2021.
Prior Publication US 2022/0385290 A1, Dec. 1, 2022
Int. Cl. H03K 19/003 (2006.01); G06F 13/40 (2006.01); H03K 19/00 (2006.01); H03K 19/017 (2006.01); H03K 19/17784 (2020.01)
CPC H03K 19/0027 (2013.01) [G06F 13/4068 (2013.01); H03K 19/01742 (2013.01); H03K 19/17784 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A bus repeater for open-drain bus communication comprising a repeating unit, the repeating unit having an A-side terminal configured to be electrically connected to an A-side open-drain bus line, and a B-side terminal configured to be electrically connected to a B-side open-drain bus line;
wherein the repeating unit is operable in a first mode in which the repeating unit is configured to receive a signal at the A-side terminal and to produce a signal at the B-side terminal based on the signal received at the A-side terminal;
wherein the repeating unit comprises a B-side accelerator element electrically connected to the B-side terminal;
wherein the repeating unit further comprises a first control unit configured to, control the B-side accelerator element to pull up a voltage at the B-side terminal when the repeating unit is operating in the first mode, and when the voltage at the A-side terminal surpasses a first threshold voltage during a rising edge of the voltage, and to subsequently control the B-side accelerator element to stop pulling up the voltage at the B-side terminal when the voltage at the B-side terminal surpasses a second threshold voltage.