Methods and apparatus for open-loop enhanced control of power supply transients

US6791302B2 · kind B2 · utility

Assignee

• PRIMARION, INC. · US

Inventors

• Benjamim Tang · Rancho Palos Verdes, US
• Keith Bassett · Torrance, US
• Tim Ng · Monterey Park, US
• Kenneth Ostrom · Rancho Palos Verdes, US
• Nicholas Steffen · Redondo Beach, US
• Cliff Duong · Willow View Lane, US

Key dates

• Filing date: Mar 21, 2002
• Grant date: Sep 14, 2004
• Expiry date: Mar 21, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G05F3/08
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A system is provided for supplying current to a dynamic load subject to transient current requirements. A sense unit coupled to the dynamic load is configured to sense the rate of change of supply current required by the dynamic load during a transient event. A current source coupled to the sense unit is configured to supply a current pulse to the dynamic load in response to the sense unit determining that the rate of change of supply current (di/dt) exceeds a predetermined threshold. The current pulse preferably has a shape characterized by a first region and a second region subsequent to the second region, wherein the first region includes a first boost current which exceeds the transient current requirement, and wherein the second region includes a second boost current which is less than the transient current requirement. More generally, a wideband transient suppression system is provided for controlling a wide spectrum of transients. The wideband system includes a primary regulator configured to compensate for low frequency transients, and a secondary regulator configured to provide short-term compensation current to the dynamic load until the relatively slow primary regulator …