VOLTAGE SUPPLY SYSTEM WITH BOOST CONVERTER AND CHARGE PUMP

• US 20170277216A1
• Filed: 06/13/2017
• Published: 09/28/2017
• Est. Priority Date: 02/15/2015
• Status: Active Grant

• Current Assignee: Skyworks Solutions Incorporated
• Original Assignee: Skyworks Solutions Incorporated
• Inventors: RIPLEY, David Steven
• Granted Patent: US 10,365,680 B2
• Time in Patent Office: Days
• CPC Class Codes: G05F 5/00 Systems for regulating electric variables by detecting deviations in the electric input to the system and thereby controlling a device within the system to obtain a regulated output
• CPC Class Codes: H02M 3/07 using capacitors charged and discharged alternately by semiconductor devices with control electrode , e.g. charge pumps
• CPC Class Codes: H02M 3/155 using semiconductor devices only
• CPC Class Codes: H04B 1/40 Circuits

Abstract

Voltage supply system with boost converter and charge pump. A voltage supply system can include a boost converter controllable to receive an input voltage at an input node and generate an output voltage when the output voltage is greater than or equal to the input voltage. The voltage supply system can include a charge pump controllable to receive the input voltage at the input node and generate the output voltage when the output voltage is less than the input voltage. The voltage supply system can further include a controller configured to receive a control signal and control the boost converter or the charge pump to generate the output voltage at an output node based on the control signal.

Claims

1. A method for operating a voltage supply system, the method comprising:

generating a first output voltage with a boost converter based on an input voltage when in a first mode;

delivering the input voltage as a second output voltage when in a second mode; and

generating a third output voltage with a charge pump based on the input voltage when in a third mode.

2. The method of claim 1 further comprising:

determining a voltage level of a control signal of a controller of the voltage supply system.

3. The method of claim 2 further comprising:

generating the first output voltage with a boost converter in response to determining the value of the control signal corresponding to the first mode.

4. The method of claim 2 further comprising:

delivering the input voltage as a second output voltage in response to determining the value of the control signal corresponding to the second mode.

5. The method of claim 2 further comprising:

generating a third output voltage with a charge pump based on the input voltage in response to determining the value of the control signal corresponding to the third mode.