Controllers | NCV881930

低静止電流 410 kHz 車載用同期降圧コントローラ

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NCV881930 は最大 38 V (標準) で動作するスプレッド・スペクトラムを搭載した 410 kHz 固定周波数低静止電流降圧コントローラです。クロックと同期するか、または個別に NCV881930 と同期できます。広い入力電圧と出力電圧負荷範囲での高速過渡応答と厳密なレギュレーションのためにピーク電流制御モードが採用されています。フィードバック補償はデバイスの内部ですので、設計を簡素化できます。NCV881930 は、定ベース・スイッチング周波数で、3.5 V (スタンバイ時 4.5 V) の車載用入力電圧範囲を、18 V に変換できます。最大 45 V のロード・ダンプ状態で、レギュレータがシャットダウンします。外部 5 V バイアス電源への自動スイッチオーバ付き高電圧バイアス・レギュレータは効率アップのために使用されます。UVLO、電流制限、短絡保護、サーマル・シャットダウンなど複数の保護機能があります。高周波のスイッチングにより、使用するインダクタ値が小さくても、全セラミック出力フィルタ・コンデンサ (スペース効率のよいスイッチング・レギュレータ・ソリューションを形成) であっても、低出力電圧リップルを発生させます。(NCV891930 で提供される 2 kHz バージョン)

  • Radio and Infotainment
  • Telematics
  • ADAS (safety applications)
  • Instrumentations & Clusters

  • Automotive

  • 30µA Operating Current at No Load
  • 50 mV Current Limit Sensing
  • Capable of 45 V Load Dump
  • Board Selectable Fixed Output Voltages With Lockout
  • 410 kHz Operating Frequency with synchronization capability
  • Adaptive Non−Overlap Circuitry
  • Integrated Spread Spectrum
  • Logic level Enable Input Can be Tied Directly to Battery
  • Short Circuit Protection Pulse Skip
  • Battery monitoring for UVLO and Overvoltage Protection
  • Thermal Shutdown (TSD)
  • Adjustable Soft−Start
  • Individual Enable and Reset pins
  • QFN Package with Wettable Flanks (pin edge plating)
  • NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
  • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant

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NCV881930MW00AR2G

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CAD Model

Pb

A

H

P

QFNW-24

484AE

1

260

REEL

4000

F

Step-Down

1

Current/Voltage Mode

3.5

45

410

$1.4384

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信頼性データ

Die Related Summary Data

Device: NCV881930MW00AR2G

Equivalent to wafer fab process: I3T

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等価デバイス時間

MTBF/MTTF (時間)

FITS

I3T

4

4350769675

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Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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