US 2018/0131277 A1 · DC-DC CONVERTER BLOCK, DC-DC CONVERTER COMPRISING SAME AND ASSOCIATED SYSTEM ENVELOPE TRACKING SYSTEM

Abstract

Disclosed is a high-power and high-frequency DC-DC converter block for the envelope tracking technique including a step-down power circuit whose output constitutes the output of the DC-DC converter block, the step-down power circuit including at least one HEMT depletion-mode transistor, the DC-DC converter block further including a gate driving circuit of the at least one HEMT depletion-mode transistor of the step-down power circuit. The driving circuit has HEMT depletion-mode transistors configured to drive the gate of the at least one HEMT depletion-mode transistor of the step-down power circuit, and the step-down power circuit is powered by two positive and non-zero power supply voltages, namely a first power supply voltage and a second power supply voltage, the first power supply voltage being greater than the second power supply voltage.

Claims18

Dependent claims

1-15. (canceled)

A high-power and high-frequency DC-DC converter block for the envelope tracking technique comprising a step-down power circuit whose output constitutes the output of the DC-DC converter block, the step-down power circuit comprising at least one HEMT (high electron mobility transistors) depletion-mode transistor (T3;

T6), the DC-DC converter block further comprising a gate driving circuit of the at least one HEMT depletion-mode transistor (T3, T6) of the step-down power circuit, wherein the gate driving circuit comprises HEMT depletion-mode transistors (T1, T2;
T4, T5) configured to drive the gate of the at least one HEMT depletion-mode transistor (T3;
T6) of the step-down power circuit, and wherein the step-down power circuit is powered by two positive and non-zero power supply voltages referenced to ground, namely a first power supply voltage (VDD1) and a second power supply voltage (VDD2), the first power supply voltage (VDD1) being greater than the second power supply voltage (VDD2).

Dependencies are inferred from the claim text.

Facts

Application

15/577,779Filed 26 May 2016

Priority

FR 155491729 May 2015

Published

10 May 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

H02M 3/158
With automatic control of output voltage or current, e.g. switching regulators: including plural semiconductor devices as final control devices…
H02M 1/08
Details of apparatus for conversion: circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in…
H02M 3/1588
Including plural semiconductor devices as final control devices for a single load: comprising at least one synchronous rectifier element
H03F 1/0227
By using a signal derived from the input signal: using supply converters

Dc-dc converter block, dc-dc converter comprising same and associated system envelope tracking system

Life of this patent

Dc-dc converter block, dc-dc converter comprising same and associated system envelope tracking system

Life of this patent

Abstract

Claims18