Offline Controllers | NCP1250

PWM コントローラ、電源モード、オフライン電源用

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NCP1250 は高集積 PWM コントローラで、頑丈で高性能のオフライン電源が小型の TSOP-6 パッケージで実現できます。電源範囲は最大 28 V、ピーク電流モード制御で動作するジッタード 65 kHz/100 kHz のスイッチング回路をホストします。セカンダリ・サイドの電力が下がり始めると、スイッチング周波数を最低レベルの 26 kHz まで自動的にフォールドバックします。電力がさらに下がると、スキップ・サイクルへ移行してピーク電流を制限します。40W の過電力保護 (OPP) は、無負荷スタンバイ要件でコンバータを仕様どおりに駆動する場合、特に困難です。当社独自の内蔵 OPP なら、外部抵抗器2つだけで、スタンバイ性能に影響することなく最大供給電力を活用できます。同じピンに過電圧保護入力もあり、オプトカプラの故障や有害な開ループ動作の場合に回路全体を保護します。最後に、タイマベースのショート保護により最高の保護スキームを実現しているため、保護トリップ・ポイントを高精度で選択できます。補助巻線と電力巻線との間が疎結合であっても関係ありません。

  • Offline Adapters
  • AC-DC converters
  • Set-top Boxes
  • Printers
  • Notebooks and Netbooks
  • Non-dissipative internal and adjustable Over Power Protection (OPP) circuits
  • Frequency Foldback down to 26 kHz and Skip-Cycle in light load conditions
  • Internal Ramp Compensation
  • Frequency jittering from full load to skip-cycle
  • Latch input for OVP and OTP implementations
  • See NCP1251 for integrated Over Voltage Protection (OVP) monitoring on the Vcc pin

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Reference Price

NCP1250ASN100T1G

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Obsolete

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

N

Flyback

Current Mode

100

Yes

8.8

Yes

Yes

Yes

28

300 / 500

Price N/A

More Details

NCP1250ASN65T1G

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Last Shipments

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

N

Flyback

Current Mode

65

Yes

8.8

Yes

Yes

Yes

28

300 / 500

Price N/A

More Details

NCP1250BP65G

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Active

CAD Model

Pb

A

H

P

PDIP-8

626-05

NA

0

TUBE

50

N

Flyback

Current Mode

65

Yes

8.8

Yes

Yes

Yes

28

300 / 500

$0.4581

More Details

NCP1250BSN100T1G

Loading...

Obsolete

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

N

Flyback

Current Mode

100

Yes

8.8

Yes

Yes

Yes

28

300 / 500

Price N/A

More Details

NCP1250BSN65T1G

Loading...

Active

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

Y

Flyback

Current Mode

65

Yes

8.8

Yes

Yes

Yes

28

300 / 500

$0.2215

More Details

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