17887095. SWITCHING VOLTAGE REGULATOR WITH BI-POLAR LOAD REGULATION simplified abstract (Apple Inc.)

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SWITCHING VOLTAGE REGULATOR WITH BI-POLAR LOAD REGULATION

Organization Name

Apple Inc.

Inventor(s)

Terry J. Groom of Rio Vista TX (US)

Daibashish Gangopadhyay of San Jose CA (US)

SWITCHING VOLTAGE REGULATOR WITH BI-POLAR LOAD REGULATION - A simplified explanation of the abstract

This abstract first appeared for US patent application 17887095 titled 'SWITCHING VOLTAGE REGULATOR WITH BI-POLAR LOAD REGULATION

Simplified Explanation

The system described in the patent application includes a voltage regulator, a current source circuit, and a control circuit.

  • The voltage regulator provides a supply voltage at its output node.
  • The current source circuit draws current away from the voltage regulator's output node.
  • The control circuit delays enabling the current source circuit when the voltage at the output node is above a predetermined level and the voltage regulator is disabled.

Potential applications of this technology:

  • DC-DC converters employing a Pulse Frequency Modulation scheme
  • Power supply systems with bi-polar load currents

Problems solved by this technology:

  • Reducing voltage ripple at the output node of the voltage regulator
  • Managing bi-polar load currents effectively

Benefits of this technology:

  • Improved performance of voltage regulator designs
  • Enhanced stability in power supply systems


Original Abstract Submitted

The present disclosure describes a system with a voltage regulator, a current source circuit, and a control circuit. The voltage regulator has an output node and is configured to provide a supply voltage at the output node. The current source circuit is configured to draw current away from the voltage regulator's output node. And, the control circuit is configured to delay enabling the current source circuit in response to a voltage at the voltage regulator's output node being above a predetermined voltage level and the voltage regulator being disabled. With this arrangement, a voltage ripple at the voltage regulator's output node can be reduced in the presence of a bi-polar load current, which can be advantageous in voltage regulator designs (e.g., in DC-DC converters employing a Pulse Frequency Modulation scheme).

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