US 2026/0280426 A1 · DUAL OUTPUT BUCK DC/DC CONVERTER

Abstract

A dual output buck DC-to-DC converter includes a positive voltage rail that receives a positive DC voltage from a DC power source, a negative voltage rail that receives a negative DC voltage from the DC power source, a switch connected between the positive voltage rail and a switching node, and a pulsed DC voltage source that delivers a PWM signal to the switch. A positive voltage output circuit is connected across the switching node and the negative voltage rail to conduct current from the positive voltage rail in a first direction to generate a positive output voltage in response to the switch operating in conducting state. A negative voltage output circuit is connected across the switching node and the negative voltage rail to conduct current from the negative voltage rail in a second direction to generate a negative output voltage in response to the switch operating in a non-conductive state.

Claims15

Dependent claims

A dual output buck direct current-to-direct current (DC/DC) converter comprising:

a positive voltage rail configured to receive a positive DC voltage from a DC power source, and a negative voltage rail configured to receive a negative DC voltage from the DC power source;
a switch including a PWM input connected to the positive voltage rail and a PWM output connected to a switching node;
a pulsed DC voltage source configured to deliver a PWM signal to the switch;
a positive voltage output circuit connected across the switching node and the negative voltage rail, the positive voltage output circuit configured to conduct current from the positive voltage rail in a first direction to generate a positive output voltage in response to the switch operating in conducting state;
and
a negative voltage output circuit connected across the switching node and the negative voltage rail, the negative voltage output circuit configured to conduct current from the negative voltage rail in a second direction to generate a negative output voltage in response to the switch operating in a non-conductive state.

3 more elements

A dual output buck direct current-to-direct current (DC/DC) converter comprising:

a switch including a PWM input connected to a positive voltage rail to receive a positive DC voltage and including a PWM output connected to a switching node;
a pulsed DC voltage source configured to deliver a PWM signal to the switch to continuously operate the switch between a conductive state and a non-conductive state;
a positive voltage output circuit connected across the switching node and a negative voltage rail configured to receive a negative DC voltage, the positive voltage output circuit configured to conduct current in a first direction during a first duty cycle to generate a positive output voltage;
and
a negative voltage output circuit connected across the switching node and the negative voltage rail, the negative voltage output circuit configured to conduct current in a second direction during a second duty cycle to generate a negative output voltage.

2 more elements

Dependencies are inferred from the claim text.

Dual output buck dc/dc converter

Life of this patent

Dual output buck dc/dc converter

Life of this patent

Abstract

Claims15