Offline Controllers | NCP1380

コントローラ、擬似共振電流モード

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Overview

NCP1380は、擬似共振コンバータに電力を供給することを目的とした高性能デバイスです。独自のバレー・ロックアウト・システムを利用し、電力負荷が軽くなってくるとスイッチング周波数の低減に転じます。その結果、スイッチング・イベントがドレインソース・バレーで常にトリガとなるにもかかわらず、動作が安定します。このシステムで第4バレーまで奏効すると、可変周波数モードへトグルし、優れたスタンバイ電力性能を確保します。過負荷状態での安全性を向上するため、高圧線で供給電力をクランプする過電力保護（OPP）回路があります。安全性の面で、固定内部タイマはフィードバック電圧に依存して障害を検出します。タイマが切れると、オプションAとCでは停止してラッチされたままになり、オプションBとDでは自動リカバリ・モードに移行します。過電圧/過熱保護の組み合わせ（バージョンAとB）と節電/過電圧保護の組み合わせ（バージョンCとD）のいずれかを実装するためのピンがあり、特にアダプタ・アプリケーションに適しています。

  • AC-DC adapters for notebooks
  • Offline battery chargers
  • Auxiliary power supplies (flat TV, appliances)
  • Power AC-DC converters for adapters, TVs and set top boxes
  • Quasi-resonant peak current mode control operation
  • Valley switching operation with valley lockout
  • Frequency foldback at light load
  • Adjustable overpower protection
  • Auto-recovery or latched internal output short circuit protection
  • Fixed internal 80 ms timer for short circuit protection
  • Combined overvoltage and overtemperature protection (A and B versions)
  • Combined overvoltage protection and brownout (C and D versions)
  • VCC range operation up to 28 V

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Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Topology

Control Mode

fsw Typ (kHz)

Stand-by Mode

UVLO (V)

Short Circuit Protection

Latch

Soft Start

VCC Max (V)

Drive Cap. (mA)

Reference Price

NCP1380ADR2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

N

Flyback

Current Mode

Variable

Yes

9

Yes

Yes

Yes

28

500 / 800

Price N/A

More Details

NCP1380BDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

Y

Flyback

Current Mode

Variable

Yes

9

Yes

No

Yes

28

500 / 800

$0.4237

More Details

NCP1380CDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

Y

Flyback

Current Mode

Variable

Yes

9

Yes

Yes

Yes

28

500 / 800

$0.4835

More Details

NCP1380DDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

Y

Flyback

Current Mode

Variable

Yes

9

Yes

No

Yes

28

500 / 800

$0.4237

More Details

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