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US 11,387,734 B2Granted
Power converter architecture using lower voltage power devices
AssigneeTexas Instruments Incorporated
InventorsRiazdeen Buhari, Roy Alan Hastings, Nghia Trong Tang
Life of this patent
Estimating the term…
Abstract
Aspects of the disclosure provide for a circuit. In at least some examples, the circuit includes a high-side power transistor, a low-side power transistor, a first transistor, a second transistor, and a third transistor. The high-side transistor is adapted to couple between an input node and a switch node. The low-side transistor is coupled between the switch node and ground. The first transistor is adapted to couple between a first node and the switch node. The second transistor is coupled between the first node and an output node. The third transistor is coupled between the first node and ground.
Claims27
A circuit, comprising:
- a high-side transistor adapted to couple between an input node and a switch node;
- a low-side transistor coupled between the switch node and ground;
- a first transistor adapted to couple between a first node and the switch node;
- a second transistor coupled between the first node and an output node;
- a third transistor coupled between the first node and ground;
- a first regulation circuit coupled between the input node and the switch node;
- and
- a second regulation circuit coupled between a drain of the first transistor and a gate of the first transistor.
5 more elements
A circuit, comprising:
- a high-side transistor adapted to couple between an input node and a switch node;
- a low-side transistor coupled between the switch node and ground;
- a first transistor adapted to couple between a first node and the switch node;
- a second transistor coupled between the first node and an output node;
- a third transistor coupled between the first node and ground;
- and
- a comparator having a first input coupled to the input node and a second input configured to receive a reference voltage, wherein an output signal of the comparator indicates whether a signal present at the input node exceeds a voltage rating of the high-side transistor, and wherein the output signal of the comparator is provided to the second regulation circuit as an enabling signal.
4 more elements
A circuit, comprising:
- a high-side device, comprising:
- a first transistor adapted to couple between an input node and a switch node;
- and
- a second transistor adapted to couple between the input node and the switch node in parallel with the first transistor;
- and
- a low-side transistor adapted to couple between the switch node and ground, wherein the switch node is adapted to couple to an energy storage component;
- wherein a gate terminal of the first transistor is adapted to couple to an output of a first driver and an output of a second driver, and a gate terminal of the second transistor is adapted to couple to an output of a third driver and an output of a fourth driver;
- and
- wherein the first driver, the second driver, the third driver, and the fourth driver each have an input adapted to couple to a round-robin controller configured to:
- control the first driver to weakly drive the first transistor beginning at a first time of a first switching cycle;
- and
- control the fourth driver to strongly drive the second transistor beginning at a second time of the first switching cycle.
9 more elements
A switched mode power supply (SMPS) having an input coupled to a battery as a power source and an output adapted to couple to a load to provide regulated power to the load, the SMPS comprises a power converter, comprising:
- a high-side transistor adapted to couple between an input node and a switch node;
- a low-side transistor coupled between the switch node and ground;
- a first transistor adapted to couple between a first node and the switch node via an energy storage component;
- a second transistor coupled between the first node and an output node;
- a third transistor coupled between the first node and ground;
- a first regulation circuit coupled between the input node and the switch node;
- and
- a second regulation circuit coupled between a drain of the first transistor and a gate of the first transistor.
5 more elements
A circuit, comprising:
- a high-side transistor adapted to couple between an input node and a switch node;
- a low-side transistor coupled between the switch node and ground;
- a first transistor adapted to couple between a first node and ground, wherein the first node is adapted to couple to the switch node;
- a second transistor coupled between the first node and a third node;
- a third transistor coupled between the third node and an output of the circuit;
- a first regulation circuit coupled between the input node and the switch node;
- and
- a second regulation circuit coupled between the first node and a gate of the first transistor.
5 more elements
A circuit, comprising:
- a Zener diode having a Zener diode cathode and a Zener diode anode, the Zener diode cathode coupled to a first input of the circuit;
- a first resistor coupled between the Zener diode anode and a first node;
- a second resistor coupled between the first node and ground;
- a first transistor having a drain coupled to the first node, and a source coupled to ground;
- a second transistor having a gate coupled to the first node, a drain adapted to couple to a voltage source, and a source coupled to a second node;
- a third resistor;
- a third transistor having a drain coupled to the second node and a source coupled to ground via the third resistor;
- and
- a driver having an input configured to receive a driver control signal and an output coupled to a third node, wherein the third node is an output of the circuit.
6 more elements
Dependencies are inferred from the claim text.