Method and system for bidirectional data and power transmission
First Claim
1. A driver that is connected to a DC power source, a microprocessor and a node in a bidirectional power and data transmission system, the driver comprising:
- a control interface for receiving voltage control signals from the microprocessor;
an input/output interface for communicating with the node; and
a transistor bridge connected to the control interface and the input/output interface and connected in parallel with the DC power source, wherein the transistor bridge switches a voltage polarity on the input/output interface in response to the voltage control signals.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and system for bidirectional data and power transmission are shown and described. An exemplary embodiment comprises a current receiver, including a microprocessor and a driver, and a plurality of nodes connected to the current receiver through a plurality of wires that allow both power supply and bidirectional data transfer between the current receiver and the plurality of nodes. The use of the plurality of wires for both power and data transmission offers significant advantages over the prior art in terms of weight reduction and system modularity.
-
Citations
20 Claims
-
1. A driver that is connected to a DC power source, a microprocessor and a node in a bidirectional power and data transmission system, the driver comprising:
-
a control interface for receiving voltage control signals from the microprocessor;
an input/output interface for communicating with the node; and
a transistor bridge connected to the control interface and the input/output interface and connected in parallel with the DC power source, wherein the transistor bridge switches a voltage polarity on the input/output interface in response to the voltage control signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A circuit module for preventing a transistor bridge from short-circuiting a DC power source connected across the transistor bridge, the circuit module comprising:
-
a resistor connected between the gate of a first transistor of the transistor bridge and the gate of a second transistor of the transistor bridge; and
a capacitor connected between the gate and the source of the second transistor of the transistor bridge, wherein the resistor and capacitor are selected so that a relative difference between a turn-on time of the first transistor of the pair and a turn-off time of the second transistor of the pair is equal to about three orders of magnitude. - View Dependent Claims (15, 16, 17)
-
-
18. A method for preventing short circuiting of a power supply across a pair of transistors in a transistor bridge, the method comprising the steps of:
-
determining the input capacitance of a first transistor of the pair;
determining the input capacitance of a second transistor of the pair;
providing a capacitor that is approximately equal to the difference between the input capacitances of the first and second transistors;
connecting the capacitor to the gate of the second transistor;
determining an RC time constant for the first transistor;
selecting a resistor to provide an RC time constant for the second transistor that is substantially greater than the RC time constant for the first transistor; and
connecting the resistor between the gate of the second transistor and the gate of the first transistor. - View Dependent Claims (19, 20)
-
Specification