Search Results - pei-hsin liu

5 Results Sort By:
Improved Current-Mode Control with Single-Step Load Transient
Non-linear single-step load transient improvement structures are proposed for current mode controlled converters. Two popular variable-frequency current mode controls are Constant On-Time (COT) and Ramp Pulse Modulation (RPM) due to their fast transient response. However, conventional COT and RPM both need multiple steps to increase inductor curren...
Published: 2/27/2015   |   Inventor(s): Virginia Li, Pei-Hsin Liu, Qiang Li, Fred Lee
Keywords(s):  
Category(s): Electrical, Energy, Engineering
Transient Performance Improvement for Constant On Time Control
A novel method to improve the load transient performance in constant on time (COT) control both in load step up and down is proposed along with its simple circuit implementation. When a large and fast load step up is introduced in COT control, increment of inductor current is limited by the constant on time (Ton) and the minimum off time which is a...
Published: 4/1/2014   |   Inventor(s): Syed Bari, Fred Lee, Qiang Li, Pei-Hsin Liu
Keywords(s):  
Category(s): Electrical, Engineering
Hybrid Interleaving Structure With Adaptive PLL Loop For Constant On-Time Switching Converter
A simple interleaving method is propsed to improve transient response and remain pseudo constant frequency for constant on-time controlled multi-phase switching converters. Currently, pulse distribution and PLL methods are used for interleaving. Former is simple, but is noise-sensitive under current ripple cancellation. Besides, the transient respo...
Published: 12/19/2013   |   Inventor(s): Pei-Hsin Liu, Fred Lee, Qiang Li
Keywords(s):  
Category(s): Electrical, Engineering
V2 Control with Capacitor Current Ramp Compensation Using Self-Calibrated Lossless Capacitor Current Sensing
V2 control is a popular control scheme in Point-of-Load Buck converters and Voltage Regulators for microprocessor. V2 control with ceramic capacitor is unstable when the converter operates at hundreds of kHz. Moreover, the jittering issue is a common concern in the commerical products. Compensating the loop by inductor current ramp increases the...
Published: 5/9/2013   |   Inventor(s): Yingyi Yan, Pei-Hsin Liu, Fred Lee
Keywords(s):  
Category(s): Electrical
External Ramp Autotuning for Current Mode Control of Switching Converter
In this invention, a novel external ramp autotuning solution for the current mode control of switching converters is proposed. Conventionally, using fixed external ramp needs to be based on the worst-case condition, while prior adaptive ramp compensation strategies cannot adapt to component tolerance and topology change. Therefore, using either app...
Published: 9/5/2012   |   Inventor(s): Pei-Hsin Liu, Fred Lee, Yingyi Yan, Paolo Mattavelli
Keywords(s):  
Category(s): Electrical
© 2019. All Rights Reserved. Powered by Inteum