发明名称 |
Communication method and apparatus using modulation of post-conduction oscillation frequency in switching converters |
摘要 |
A communication method and apparatus that uses modulation of post-conduction oscillation frequency in switching converters is provided. The apparatus may include a converter having a magnetic element having a primary winding and a secondary winding, a first switch, a control circuit configured to repeatedly activate the first switch to couple an input voltage source to the primary winding to store electrical energy in the magnetic element, and a diode coupled to the secondary winding, said diode configured to couple the secondary winding to a load to deliver the electrical energy stored in the magnetic element, and a communication apparatus having a second switch, a first modulator capacitor coupled to the secondary winding, a first transmitter configured to activate the second switch in accordance with a first input signal, and a first receiver configured to detect a post-conduction oscillation frequency of a voltage signal at the primary or secondary windings. |
申请公布号 |
US9602015(B2) |
申请公布日期 |
2017.03.21 |
申请号 |
US201514872878 |
申请日期 |
2015.10.01 |
申请人 |
Microchip Technology Inc. |
发明人 |
Mednik Alexander;Krugly Simon |
分类号 |
H02M1/00;H02M3/335;H04B5/00;H02M3/24 |
主分类号 |
H02M1/00 |
代理机构 |
Burr & Forman LLP |
代理人 |
Burr & Forman LLP ;Corbett Ryan M. |
主权项 |
1. An apparatus comprising:
a converter; and a communication apparatus; wherein the converter comprises a magnetic element having a primary winding and a secondary winding, a first switch, a control circuit configured to repeatedly activate the first switch to couple an input voltage source to the primary winding to store electrical energy in the magnetic element, and a diode coupled to the secondary winding, said diode configured to couple the secondary winding to a load to deliver the electrical energy stored in the magnetic element; wherein the converter comprises a capacitance at the primary winding and the secondary winding forming an LC circuit with the magnetic element; and wherein the communication apparatus comprises a second switch, a first modulator capacitor coupled to the secondary winding, a first transmitter configured to activate the second switch in accordance with a first input signal, and a first receiver configured to detect a change in an oscillation frequency of the LC circuit. |
地址 |
Chandler AZ US |