US 12,206,411 B2
Power chip with a multi-function pin
Pengfei Liu, Hangzhou (CN)
Assigned to Chengdu Monolithic Power Systems Co., Ltd., Sichuan (CN)
Filed by Chengdu Monolithic Power Systems Co., Ltd., Chengdu (CN)
Filed on Oct. 19, 2022, as Appl. No. 17/969,106.
Claims priority of application No. 202111258764.7 (CN), filed on Oct. 27, 2021.
Prior Publication US 2023/0130380 A1, Apr. 27, 2023
Int. Cl. H03K 19/177 (2020.01); H03K 19/017 (2006.01); H03K 19/17772 (2020.01); H03K 19/17788 (2020.01)
CPC H03K 19/17788 (2013.01) [H03K 19/01742 (2013.01); H03K 19/17772 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power chip, comprising:
a power pin, configured to receive an input voltage;
an indicating signal generating circuit, configured to generate an indicating signal based on working conditions of a switching converter; and
a multi-function pin, configured to provide the indicating signal and to receive/transmit a communication data based on a power-on signal indicative of the input voltage, wherein the communication data includes an internal data and an external data; wherein
when the power-on signal is larger than the power-on voltage threshold, based on a logic operation result of an indicator enabling signal and a communication enabling signal, the multi-function pin performs one of functions of: (1) providing the indicating signal; (2) receiving/transmitting the communication data; (3) providing the indicating signal, and receiving/transmitting the communication data.