Buck-Stromregler

Details

Veröffentlichungs-Nr.

EP4819471

Anmeldetag

27. März 2026

Veröffentlichung

7. Oktober 2026

Rechtsraum

EP

Abstract

The present disclosure relates to a step-down converter operating at a constant switching period (Tsw). The high side and low side switches of the converter are controlled by comparing a current (IL) flowing across an inductor connected to the converter with a first threshold (ThH) equal to ILtarget + ILband/2 and a second threshold (ThL) equal to ILtarget - Ilband/2. ILtarget is determined by a constant target average value (Icst) of the current (IL). ILband is determined based on one of the following equations: ILband = Vld / Lv * Toff , <img class="EMIRef" id="9f3113c2-0da4-460a-ad72-27562fa0910e-ia01" /> with Toff a value of an ON-time duration of the low side switch, Lv an inductance value of the inductor (L), and Vld a voltage across a load connected to the inductor, and ILband = Tsw * Vld / Lv * 1 − Vld / Vsup , <img class="EMIRef" id="9f3113c2-0da4-460a-ad72-27562fa0910e-ia02" /> with Tsw the constant switching period, and Vsup a supply voltage.

Anmelder

Firma

STMicroelectronics International N.V.

Land

🇨🇭 Schweiz