Company Filing History:
4 out of 19 
3 out of 16,453 
1 out of 27,375 
Years Active: 2008-2012
Title: Innovations of Inventor Wee Sien Hong
Introduction
Wee Sien Hong is a notable inventor based in Singapore, recognized for his contributions to the field of electrical engineering and device protection circuits. With a total of four patents to his name, he has demonstrated a commitment to innovation and problem-solving in technology.
Latest Patents
One of his most recent inventions is a start-up in-rush current protection circuit for a DC-DC converter. This circuit is designed to protect DC-DC converters from the start-up in-rush current by utilizing a power MOS transistor, a coupling capacitor, and a voltage clamping circuit. The coupling capacitor ensures that no current is consumed during normal operation, while an enable signal or leakage current circuit is employed to discharge the capacitor for subsequent power supply activations.
Another significant patent involves a slew rate control in the output driver of switching circuits. This invention aims to prevent power ground undershoot by initially discharging the gate capacitance of a lower power transistor rapidly, followed by a slow discharge to limit the output slew rate. As the power ground level drops below the common ground, the gate capacitance continues to be discharged slowly, which effectively reduces the gate voltage slew rate when the transistor is almost fully turned off, thereby avoiding any undershoot at the power ground. Additionally, similar slew rate control circuits can be implemented in the output drivers of switching circuits to prevent PVCC overshoot.
Career Highlights
Wee Sien Hong has had an impactful career working with reputable companies such as Panasonic Semiconductor Asia Pte. Ltd. and Panasonic Corporation. His experience in the industry has equipped him with the skills necessary to develop innovative solutions to complex engineering challenges.
Collaborations
Throughout his career, he has collaborated with esteemed colleagues, including Shiah Siew Wong and Tien Yew Kang. These partnerships often lead to fruitful outcomes in the development of technology and inventive solutions within the industry.
Conclusion
Wee Sien Hong is a distinguished inventor whose work continues to influence the field of electrical engineering. His patents not only showcase his innovative mindset but also reflect his ability to address practical problems through technology. As he moves forward in his career, he is poised to make further contributions that may inspire future innovations in the industry.