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Method for a heatsink and cap for cylindrical-shaped capacitors, voltage regulators, and other components

IP.com Disclosure Number: IPCOM000008065D
Publication Date: 2002-May-15
Document File: 4 page(s) / 55K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for a heatsink and cap for cylindrical-shaped capacitors, voltage regulators, and other components. Benefits include improved thermal performance.

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Method for a heatsink and cap for cylindrical-shaped capacitors, voltage regulators, and other components

Disclosed is a method for a heatsink and cap for cylindrical-shaped capacitors, voltage regulators, and other components. Benefits include improved thermal performance.

Background

              Decreased ambient cooling caused by very high component density often leads to premature capacitor and voltage regulator failure. Input voltage capacitors are typically the first parts to fail in a high-power circuit. To function reliably in densely packed systems, the capacitor and voltage regulator must be kept cool.

              The conventional solution is to reduce the power dissipation of the voltage regulator, increase the system air flow rate by adding additional system fan, and relocate the capacitor and voltage regulator to the main air flow paths to keep them away from the hot components. No cooling device such as heatsink is attached to the cylindrical shape of component (see Figure 1). A system fan is also added to increase the system airflow around the components.

Description

              The disclosed method is a heatsink for cylindrical-shaped capacitors, voltage regulators, and other components. The heatsink can be made of aluminum, copper, or carbon-fiber-enhanced plastic.

              The disclosed method features two styles of heat fins, disk shaped and radial, to increase the effective heat-transfer area. The disk-shaped design includes a heatsink that looks like a pencil cap (see Figure 2). The disk-like heat fins are in the top of the cap and a heat spreading post is located right on the fin center. The heatsink cap can be mounted to the cylindrical shape of component directly (...