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降圧コンバータ

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バック（ステップダウン）トポロジは、入力 / 出力絶縁の有無にかかわらず出力電圧が入力電圧を下回るDC-DCスイッチング･コンバータで使用されます。

STは、突入電流を最小限に抑えるソフト･スタートや電源投入時のシーケンス処理を可能にするパワー･グッドなど、様々な機能を備えた降圧コンバータIC（パワー･スイッチ内蔵）や多相コントローラ、単相コントローラ、マルチ出力コントローラを提供しています。また、特定のEMI / EMC / 効率 / 電力密度目標やユース･ケース向けに微調整された降圧コンバータの設計に役立つプログラマブル･デバイスも利用可能です。

STは、CPUやDDRメモリ向けに、Intel VR13/VR12.5仕様に準拠した絶縁型シングル･ステージ48V/ポイント･オブ･ロード（PoL）共振直接変換ソリューションも開発しています。また、ダイナミック･セル･シェディングやパルス･スキップ機能を備えた、最大6つのインタリーブ･セル向けの極めて拡張性に優れたソリューションも提供しています。

さらに、製品開発期間の短縮をサポートする様々な評価および開発ツールやリファレンス設計を取り揃えています。

降圧コンバータ回路図

buck converter circuit diagram

ビデオ

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Getting started with eDesignSuite

The smart way to design your application

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All resources

アプリケーションノート (5 of 18)

Resource title
Latest update
AN1768 ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES 1.1
24 Mar 2020
24 Mar 2020
AN1768 ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES 1.1
AN2025 CONVERTER IMPROVEMENT USING SCHOTTKY RECTIFIER AVALANCHE SPECIFICATION 1.1
13 Sep 2018
13 Sep 2018
AN2025 CONVERTER IMPROVEMENT USING SCHOTTKY RECTIFIER AVALANCHE SPECIFICATION 1.1
AN604 Calculation of conduction losses in a power rectifier 3.2
24 Mar 2020
24 Mar 2020
AN604 Calculation of conduction losses in a power rectifier 3.2
AN4021 Calculation of reverse losses in a power diode 1.0
24 Mar 2020
24 Mar 2020
AN4021 Calculation of reverse losses in a power diode 1.0
AN5028 Calculation of turn-off power losses generated by a ultrafast diode 1.0
13 Sep 2018
13 Sep 2018
AN5028 Calculation of turn-off power losses generated by a ultrafast diode 1.0
AN4381 Current sharing in parallel diodes 1.0
24 Mar 2020
24 Mar 2020
AN4381 Current sharing in parallel diodes 1.0
AN3267 Impact of power MOSFET VGS on buck converter performance 1.2
13 Sep 2018
13 Sep 2018
AN3267 Impact of power MOSFET VGS on buck converter performance 1.2
AN1453 NEW FAMILY OF 150V POWER SCHOTTKY 1.1
24 Mar 2020
24 Mar 2020
AN1453 NEW FAMILY OF 150V POWER SCHOTTKY 1.1
AN4391 New P-channel trench technology from ST for low power DC-DC conversions and load switching applications 1.0
13 Sep 2018
13 Sep 2018
AN4391 New P-channel trench technology from ST for low power DC-DC conversions and load switching applications 1.0
AN4150 Power MOSFET technology gate current needs in a synchronous buck converter 1.2
07 Jan 2019
07 Jan 2019
AN4150 Power MOSFET technology gate current needs in a synchronous buck converter 1.2
AN4191 Power MOSFET: Rg impact on applications 1.2
07 Jan 2019
07 Jan 2019
AN4191 Power MOSFET: Rg impact on applications 1.2
AN4192 Power MOSFETs: best choice guide for VRM application 1.0
13 Sep 2018
13 Sep 2018
AN4192 Power MOSFETs: best choice guide for VRM application 1.0
AN5046 Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT packages 4.0
24 Mar 2020
24 Mar 2020
AN5046 Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT packages 4.0
AN5088 Rectifiers thermal management, handling and mounting recommendations 2.0
24 Mar 2020
24 Mar 2020
AN5088 Rectifiers thermal management, handling and mounting recommendations 2.0
AN533 SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting 3.6
24 Mar 2020
24 Mar 2020
AN533 SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting 3.6
AN443 SERIES OPERATION ON FAST RECTIFIERS 2.1
24 Mar 2020
24 Mar 2020
AN443 SERIES OPERATION ON FAST RECTIFIERS 2.1
AN1542 THE THERMAL RUNAWAY LAW IN SCHOTTKY USED IN OR-ING APPLICATION 1.1
13 Sep 2018
13 Sep 2018
AN1542 THE THERMAL RUNAWAY LAW IN SCHOTTKY USED IN OR-ING APPLICATION 1.1
AN869 Tj max limit of Schottky diodes 2.2
24 Mar 2020
24 Mar 2020
AN869 Tj max limit of Schottky diodes 2.2
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Design Notes & Tips (2)

Resource title
Latest update
DN0010 Adapting ST power line modem evaluation boards to communicate over a DC bus 1.2
16 Jul 2019
16 Jul 2019
DN0010 Adapting ST power line modem evaluation boards to communicate over a DC bus 1.2
DN0011 ST1S03 alternative topology: Using a buck in a negative buck-boost configuration 1.2
16 Jul 2019
16 Jul 2019
DN0011 ST1S03 alternative topology: Using a buck in a negative buck-boost configuration 1.2

フライヤー (3)

Resource title
Latest update
A698x family High-performance automotive synchronous DC-DC converters 1.0
12 Nov 2019
12 Nov 2019
A698x family High-performance automotive synchronous DC-DC converters 1.0
A798x, A597x switching regulators for car power management 1.0
24 Mar 2020
24 Mar 2020
A798x, A597x switching regulators for car power management 1.0
AST1S3x family Power optimization for postregulated automotive systems 1.0
21 Jun 2018
21 Jun 2018
AST1S3x family Power optimization for postregulated automotive systems 1.0

セレクションガイド (1)

Resource title
Latest update
Linear and Switching Voltage Regulators Selection Guide 3.0
25 Mar 2020
25 Mar 2020
Linear and Switching Voltage Regulators Selection Guide 3.0

All tools & software

    • 製品型番
      		ステータス
      		概要
      		タイプ
      		サプライヤ

      ST Diode Finder
      量産中

      Diode product finder application for Android and iOS

      		 ファインダ･アプリ ST
      ST Diode Finder

      概要:

      Diode product finder application for Android and iOS

eDesignSuite

コンバータ

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output

V This option is required and must be a number.
A This option is required and must be a number.