FAST TRANSIENT RESPONSE IN DC-to-DC CONVERTERS
US-2020313552-A1 · Oct 1, 2020 · US
Fast transient response in DC-to-DC converters
US11539293B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11539293-B2 |
| Application number | US-202117146248-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 11, 2021 |
| Priority date | Mar 27, 2019 |
| Publication date | Dec 27, 2022 |
| Grant date | Dec 27, 2022 |
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- Title
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Abstract
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A capacitor is discharged to a point where ring back in an output voltage across the capacitor is eliminated in response a transient event to high side and low side switching devices conductively coupled to an inductor and the capacitor before turning on the high side switch and varying an output voltage with a change in a load current.
First claim
Opening claim text (preview).
What is claimed is: 1. A method comprising: discharging a capacitor in a DC-DC converter to a point where ring back in an output voltage across the capacitor is eliminated in response a transient event to high side and low side switching devices conductively coupled to an inductor and the capacitor before turning on the high side switch and varying the output voltage with a change in a load current using a transient control unit (TCU) and an adaptive voltage positioning (AVP) controller, wherein the TCU is configured to adaptively adjust a load line R LL to meet a certain constraint for a given load transient to attain optimal performance of the DC-DC converter, wherein the certain constraint is R LL <I Δ /(2( V in −V O )×( C o /L ))− R ESR , where I Δ is a change in amplitude of the load current in the transient event, V in is an input voltage of the DC-DC converter, V O is an output voltage of the DC-DC converter, C o is the capacitance of the capacitor, L is the inductance of the inductor and R ESR is an equivalent series resistance. 2. The method of claim 1 wherein the TCU modifies an error voltage used by a Proportional-Integral-Derivative (PID) controller. 3. The method of claim 1 , wherein the TCU controls the operation of a Proportional-Integral-Derivative (PID) controller. 4. The method of claim 1 wherein the TCU controls operation of a pulse width modulation (PWM) module that governs switching of the high side and low side switching devices. 5. The method of claim 1 wherein TCU sends control signals to a supervisor during the transient event.
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Classifications
with means for compensating against rapid load changes, e.g. with auxiliary current source, with dual mode control or with inductance variation · CPC title
- H02M3/158Primary
including plural semiconductor devices as final control devices for a single load · CPC title
by dynamic converters · CPC title
for the simultaneous control of series or parallel connected semiconductor devices · CPC title
- H02M3/157Primary
with digital control · CPC title
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- What does patent US11539293B2 cover?
- A capacitor is discharged to a point where ring back in an output voltage across the capacitor is eliminated in response a transient event to high side and low side switching devices conductively coupled to an inductor and the capacitor before turning on the high side switch and varying an output voltage with a change in a load current.
- Who is the assignee on this patent?
- Alpha & Omega Semiconductor Cayman Ltd
- What technology area does this patent fall under?
- Primary CPC classification H02M3/158. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 27 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).