Systems and methods of level shifting for voltage drivers

A system for controlling one or more switches, the system comprising:

• a first converting circuit configured to convert a first current and generate a first converted voltage signal based at least in part on the first current;
• a second converting circuit configured to convert a second current and generate a second converted voltage signal based at least in part on the second current;
• a signal processing component configured to receive the first converted voltage signal and the second converted voltage signal and generate an output signal based on at least information associated with the first converted voltage signal and the second converted voltage signal;
• a first switch configured to receive a first input signal and allow the first current to flow through the first switch based on at least information associated with the first input signal;
• and
• a second switch configured to receive a second input signal and allow the second current to flow through the second switch based on at least information associated with the second input signal;
• wherein the signal processing component is further configured to:
• if the second converted voltage signal is larger than the first converted voltage signal by at least a first predetermined magnitude, generate the output signal at a first logic level;
• and
• if the first converted voltage signal is larger than the second converted voltage signal by at least a second predetermined magnitude, generate the output signal at a second logic level, the second logic level being different from the first logic level;
• wherein the signal processing component is further configured to receive a first voltage and a second voltage, the first voltage minus the second voltage in magnitude being equal to a first predetermined value;
• wherein:
• the first switch is further configured to receive the first input signal at the first logic level at a first time, at the first time the second voltage increasing in magnitude to an intermediate value smaller than a second predetermined value;
• the second switch is further configured to receive the second input signal at the second logic level at the first time;
• and
• the signal processing component is further configured to change the output signal from the second logic level to the first logic level at a second time, the second time being no earlier than the first time, at the second time the second voltage increasing in magnitude from the intermediate value to the second predetermined value.

A system for controlling one or more switches, the system comprising:

• a first converting circuit configured to convert a first current and generate a first converted voltage signal based at least in part on the first current;
• a second converting circuit configured to convert a second current and generate a second converted voltage signal based at least in part on the second current;
• a signal processing component configured to receive the first converted voltage signal and the second converted voltage signal and generate an output signal based on at least information associated with the first converted voltage signal and the second converted voltage signal;
• a first switch configured to receive a first input signal and allow the first current to flow through the first switch based on at least information associated with the first input signal;
• and
• a second switch configured to receive a second input signal and allow the second current to flow through the second switch based on at least information associated with the second input signal;
• wherein the signal processing component is further configured to:
• if the second converted voltage signal is larger than the first converted voltage signal by at least a first predetermined magnitude, generate the output signal at a first logic level;
• and
• if the first converted voltage signal is larger than the second converted voltage signal by at least a second predetermined magnitude, generate the output signal at a second logic level, the second logic level being different from the first logic level;
• wherein the signal processing component is further configured to receive a first voltage and a second voltage, the first voltage minus the second voltage in magnitude being equal to a first predetermined value;
• wherein:
• the first switch is further configured to receive the first input signal at the first logic level at a first time, the first time being before the second voltage increases in magnitude to a second predetermined value;
• the second switch is further configured to receive the second input signal at the second logic level at the first time;
• and
• the signal processing component is further configured to change the output signal from the second logic level to the first logic level at a second time, the second time being no earlier than the first time.

A system for controlling one or more switches, the system comprising:

• a first switch configured to receive a first input signal and allow at least a first current to flow through the first switch based on at least information associated with the first input signal;
• a first current-sink component coupled to the first switch;
• a second switch configured to receive a second input signal and allow at least a second current to flow through the second switch based on at least information associated with the second input signal;
• a second current-sink component coupled to the second switch;
• a first converting circuit configured to convert the first current and generate a first converted voltage signal based at least in part on the first current;
• a second converting circuit configured to convert the second current and generate a second converted voltage signal based at least in part on the second current;
• a first comparator configured to receive the first converted voltage signal and the second converted voltage signal and generate a first comparison signal based on at least information associated with the first converted voltage signal and the second converted voltage signal;
• and
• a second comparator configured to receive the first converted voltage signal and the second converted voltage signal and generate a second comparison signal based on at least information associated with the first converted voltage signal and the second converted voltage signal;
• wherein:
• the first comparator is further configured to, if the second converted voltage signal is larger than the first converted voltage signal by at least a first predetermined magnitude, generate the first comparison signal at a first logic level;
• and
• the second comparator is further configured to, if the first converted voltage signal is larger than the second converted voltage signal by at least a second predetermined magnitude, generate the second comparison signal at the first logic level.

A method for controlling one or more switches, the method comprising:

• receiving a first input signal at a first switch;
• processing information associated with the first input signal;
• allowing at least a first current to flow through the first switch based on at least information associated with the first input signal;
• receiving a second input signal at a second switch;
• processing information associated with the second input signal;
• allowing at least a second current to flow through the second switch based on at least information associated with the second input signal;
• converting the first current to a first converted voltage signal based at least in part on the first current;
• converting the second current to a second converted voltage signal based at least in part on the second current;
• receiving the first converted voltage signal and the second converted voltage signal;
• processing information associated with the first converted voltage signal and the second converted voltage signal;
• generating a first comparison signal based on at least information associated with the first converted voltage signal and the second converted voltage signal, the first comparison signal being at a first logic level if the second converted voltage signal is larger than the first converted voltage signal by at least a first predetermined magnitude;
• and
• generating a second comparison signal based on at least information associated with the first converted voltage signal and the second converted voltage signal, the second comparison signal being at the first logic level if the first converted voltage signal is larger than the second converted voltage signal by at least a second predetermined magnitude.

A system for controlling one or more switches, the system comprising:

• a first converting circuit configured to convert a first current and generate a first voltage signal based at least in part on the first current;
• a second converting circuit configured to convert a second current and generate a second voltage signal based at least in part on the second current;
• and
• a signal processing component configured to receive the first voltage signal and the second voltage signal and generate an output signal based on at least information associated with the first voltage signal and the second voltage signal;
• wherein the signal processing component is further configured to:
• in response to the second voltage signal being larger than the first voltage signal by at least a first predetermined magnitude, generate the output signal at a first logic level;
• and
• in response to the first voltage signal being larger than the second voltage signal by at least a second predetermined magnitude, generate the output signal at a second logic level, the second logic level being different from the first logic level;
• wherein the signal processing component is further configured to receive a third voltage and a fourth voltage, a difference between the third voltage and the fourth voltage being equal in magnitude to a predetermined value.

A system for controlling one or more switches, the system comprising:

• a first switch configured to receive a first input signal and allow at least a first current to flow through the first switch based on at least information associated with the first input signal;
• a second switch configured to receive a second input signal and allow at least a second current to flow through the second switch based on at least information associated with the second input signal;
• a first converting circuit configured to convert the first current and generate a first voltage signal based at least in part on the first current;
• a second converting circuit configured to convert the second current and generate a second voltage signal based at least in part on the second current;
• a first comparator configured to receive the first voltage signal and the second voltage signal and generate a first comparison signal based on at least information associated with the first voltage signal and the second voltage signal;
• a second comparator configured to receive the first voltage signal and the second voltage signal and generate a second comparison signal based on at least information associated with the first voltage signal and the second voltage signal;
• and
• a flip-flop component configured to receive at least the first comparison signal and the second comparison signal;
• wherein:
• the first comparator is further configured to, in response to the second voltage signal being larger than the first voltage signal by at least a first predetermined magnitude, generate the first comparison signal at a first logic level;
• and
• the second comparator is further configured to, in response to the first voltage signal being larger than the second voltage signal by at least a second predetermined magnitude, generate the second comparison signal at the first logic level;
• wherein:
• the first comparator is further configured to, in response to the first voltage signal being larger than the second voltage signal by at least the second predetermined magnitude, generate the first comparison signal at a second logic level;
• and
• the second comparator is further configured to, in response to the second voltage signal being larger than the first voltage signal by at least the first predetermined magnitude, generate the second comparison signal at the second logic level;
• wherein the flip-flop component is further configured to:
• in response to the first comparison signal being at the first logic level and the second comparison signal being at the second logic level, generate an output signal at the first logic level;
• and
• in response to the first comparison signal being at the second logic level and the second comparison signal being at the first logic level, generate the output signal at the second logic level.