Offline Controllers | NCP1234

コントローラ、固定周波数、電流モード、フライバックコンバータ用

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CAD Model

Overview

NCP1234 は新しい固定周波数電流モード・コントローラで、ダイナミック自己給電 (DSS) が特長です。このデバイスには、これまでの NCP12xx ファミリとピン間互換性があります。DSS 機能により、補助電源や VCC キャパシタの設計が大幅に簡素化されます。これは遷移中に、内部スタートアップ電流源がアクティブ化され、コントローラへ供給されるからです。周波数フォールドバックにより、軽負荷状態での優れた効率を示しながら、超低スタンバイ電力消費を達成します。内部周波数ジッタリング、ランプ補償、多用途ラッチ入力により、コンポーネントのコストが主要な制約となるコンバータの有力候補となります。タイマベースの故障検知で、過負荷を確実に検知します。補償が調整可能なので、入力電圧から独立して、最大電力を保持できます。

  • Consumer Electronics Power Supplies
  • Auxiliary/Housekeeping power supplies
  • Notebooks
  • Frequency Foldback then Skip Mode in light load and standby conditions
  • High voltage current source with brown-out detection and dynamic self-supply
  • Frequency Jittering
  • 4.0 ms Soft-Start
  • Adjustable Overpower Compensation
  • Latched / Autorecovery Timer-Based Overload Protection

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CAD Models

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

NCP1234AD100R2G

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Active

CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

Y

Flyback

Current Mode

100

Yes

9.5

Yes

Yes

Yes

28

500 / 500

$0.5193

More Details

NCP1234AD65R2G

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Lifetime

CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

N

Flyback

Current Mode

65

Yes

9.5

Yes

Yes

Yes

28

500 / 500

$0.4608

More Details

NCP1234BD100R2G

Loading...

Active

CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

Y

Flyback

Current Mode

65

Yes

9.5

Yes

Yes

Yes

28

500 / 500

$0.5193

More Details

NCP1234BD65R2G

Loading...

Active

CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

Y

Flyback

Current Mode

65

Yes

9.5

Yes

Yes

Yes

28

500 / 500

$0.4388

More Details

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