US 11,811,406 B2
Driving device and driving-program updating method for fan
Chung-Ping Tan, Taipei (TW)
Assigned to Midastek Microelectronics Inc., Taipei (TW)
Filed by Midastek Microelectronics Inc., Taipei (TW)
Filed on Sep. 23, 2021, as Appl. No. 17/482,428.
Claims priority of application No. 110132149 (TW), filed on Aug. 30, 2021.
Prior Publication US 2023/0062609 A1, Mar. 2, 2023
Int. Cl. H03K 3/017 (2006.01); G05B 19/042 (2006.01)
CPC H03K 3/017 (2013.01) [G05B 19/0426 (2013.01); G05B 2219/23296 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A driving device for a fan unit, the driving device comprising:
a signal converter, configured to receive a first signal and convert the first signal into a second signal;
a storage circuit, configured to store a driving program;
a controller, coupled to the signal converter and the storage circuit, and configured to provide a control signal in response to the second signal and the driving program;
a driver, coupled to the controller, configured to drive the fan unit in response to the control signal; and
a detection circuit, coupled to the storage circuit, configured to detect whether the first signal comprises a program update command, wherein: when the first signal comprises the program update command, the driving program stored in the storage circuit is updated based on the program update command,
wherein the first signal is a pulse-width modulation signal with a frequency range,
wherein the second signal is a voltage signal, and
wherein a voltage value of the second signal is related to a first frequency of the frequency range.