POWER DEVICE

• US 20150036389A1
• Filed: 01/30/2014
• Published: 02/05/2015
• Est. Priority Date: 02/08/2013
• Status: Active Grant

• Current Assignee: Smart Prong Technologies, Inc.
• Original Assignee: Advanced Charging Technologies LLC
• Inventors: Freeman, Michael H., Weaver, W. J. "Jim" Jr., Freeman, Mitchael C., Dieter, Robert, Santee, Brian
• Granted Patent: US 9,461,546 B2
• Time in Patent Office: Days
• US Class Current: 363/16
• CPC Class Codes: H01R 31/065 with built-in electric apparatus
• CPC Class Codes: H02M 1/0009 Devices or circuits for detecting current in a converter
• CPC Class Codes: H02M 1/0032 Control circuits allowing low power mode operation, e.g. in standby mode
• CPC Class Codes: H02M 1/08 Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
• CPC Class Codes: H02M 1/10 Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
• CPC Class Codes: H02M 1/36 Means for starting or stopping converters
• CPC Class Codes: H02M 3/01 Resonant DC/DC converters
• 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 3/158 including plural semiconductor devices as final control devices for a single load
• CPC Class Codes: H02M 3/335 using semiconductor devices only
• CPC Class Codes: H02M 3/33507 with automatic control of the output voltage or current, e.g. flyback converters H02M3/33561, H02M3/33569 take precedence
• CPC Class Codes: H02M 3/33592 having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
• CPC Class Codes: H02M 3/337 in push-pull configuration H02M3/33576 takes precedence; with self-oscillating arrangements H02M3/3382, H02M3/3385
• CPC Class Codes: H02M 3/3374 with preregulator, e.g. current injected push-pull
• CPC Class Codes: H02M 7/217 using semiconductor devices only
• CPC Class Codes: Y02B 70/10 Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

An energy efficient apparatus includes a switching device, a frequency dependent reactive device, and a control element is provided. The switching device is coupled to a source of electrical power and includes a pair of transistors and is adapted to receive a control signal and to produce an alternating current power signal. The frequency of the alternating current power signal is responsive to the control signal. The frequency dependent reactive device is electrically coupled to the pair of transistors for receiving the alternating current power signal and producing an output power signal. The frequency dependent reactive device is chosen to achieve a desired voltage of the output power signal relative to the frequency of the alternating current power signal. The control element senses an actual voltage of the direct current power signal and modifies the control signal delivered to achieve the desired voltage of the direct current power signal.

Claims

1. An apparatus, comprising:

a switching device coupled to a source of electrical power, the switching device being adapted to receive a direct current (DC) input power signal having an input voltage level, to receive a control signal and to produce an alternating current (AC) power signal as a function of the DC input power signal and the control signal, the AC power signal having the input voltage level and a frequency, the frequency of the AC power signal being responsive to the control signal, and,

a frequency dependent reactive device electrically coupled to the switching device for receiving the AC power signal and producing a DC output power signal having an output voltage level that is different than the input voltage level, the frequency dependent reactive device being chosen to achieve a desired voltage of the DC output power signal relative to the frequency of the AC power signal, the switching device adapted to adjust the frequency of the AC power signal based on the output voltage level to produce the desired voltage level of the DC output power signal.