Offline Controllers | NCP1203

PWMコントローラ、固定周波数、フライバック、電流モード

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Overview

SO-8またはDIP-8パッケージに収められたNCP1203は、超コンパクトなスイッチモード電源への大きな一歩となり、UC384Xデバイスを置き換える有力候補となります。独自のSmartMOS超高電圧テクノロジーにより、完全にオフラインのAC/DCアダプタ、充電器、高電力SMPSが、わずかな外部コンポーネントで実装できます。固定スイッチング周波数40 kHz/60 kHz/100 kHzで動作する内部構造による、クリーンで損失のないスタートアップ・シーケンスを確保する高電圧スタートアップFETが特長です。電流モード制御により、優れた音声感受性と固有のパルス間制御を本来的に実現します。出力電力需要が減少するなど、電流セットポイントが所与の値を下回ると、いわゆるスキップ・サイクル・モードへ自動で移行し、低負荷で効率が向上し、スタンバイ状態で優れた性能を発揮します。これはユーザーが調整可能な低ピーク電流時に発生するため、音響ノイズはありません。NCP1203には効率のよい保護回路もあるため、出力過負荷状態で出力パルスが無効化され、安全なバースト・モードに移行して再起動を試行します。デフォルト値が消失しても自動で復旧します。最後に、ヒステリシスによる温度シャットダウンで、安全で堅牢な電源の構築を支援します。

  • AC/DC Adapters for Notebooks, etc.
  • Offline Battery Chargers
  • Auxiliary Power Supplies (USB, Appliances, TVs, etc.)
  • High-Voltage Start Up Current Source
  • Auto-Recovery Internal Output Short-Circuit Protection
  • Extremely Low No-Load Standby Power
  • Current-Mode with Adjustable Skip-Cycle Capability
  • Internal Leading Edge Blanking
  • 250 mA Peak Current Capability
  • Internally Fixed Frequency at 40 kHz, 61 kHz and 100 kHz
  • Direct Optocoupler Connection
  • Undervoltage Lockout at 7.6 V Typical
  • SPICE Models Available for TRANsient and AC Analysis
  • Pin to Pin Compatible with NCP1200
  • Pb-Free Packages are Available

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fsw Typ (kHz)

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Reference Price

NCP1203D100R2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

N

Flyback

Current Mode

100

Yes

Yes

Yes

No

No

16

250

Price N/A

More Details

NCP1203D40R2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

N

Flyback

Current Mode

40

Yes

Yes

Yes

No

No

16

250

Price N/A

More Details

NCP1203D60R2G

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Last Shipments

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

N

Flyback

Current Mode

60

Yes

Yes

Yes

No

No

16

250

Price N/A

More Details

NCP1203P100G

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Obsolete

CAD Model

Pb

A

H

P

PDIP-8

626-05

NA

0

TUBE

50

N

Flyback

Current Mode

100

Yes

Yes

Yes

No

No

16

250

Price N/A

More Details

NCP1203P40G

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Obsolete

CAD Model

Pb

A

H

P

PDIP-8

626-05

NA

0

TUBE

50

N

Flyback

Current Mode

40

Yes

Yes

Yes

No

No

16

250

Price N/A

More Details

NCP1203P60G

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Last Shipments

CAD Model

Pb

A

H

P

PDIP-8

626-05

NA

0

TUBE

50

N

Flyback

Current Mode

60

Yes

Yes

Yes

No

No

16

250

Price N/A

More Details

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