Offline Controllers | NCP1256

電圧低下保護機能を搭載した低電力オフライン PWM 電流モード・コントローラ

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Overview

NCP1256 には、費用効率の高い、数ワットから数十ワットまでのスイッチ・モード電源を構築するために必要なものがすべて揃っています。小型の TSOP-6 パッケージに収められたこの部品の電圧源は最大 30 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。 NCP1256 は、タイマベースの自動リカバリ短絡保護、ロスレス OPP、調整しやすい電圧低下 (BO) ピンなどの保護機能を搭載しています。たとえば、OVP や OTP イベントなどを使った実用的な方法で部品をラッチ・オフするために、2 つの入力が提供されています。ラッチまたは自動リカバリを選択するためのオプションがいくつか用意されています。

  • Ac−dc Adapters for Portable Devices
  • Ac−dc Adapters for Computers
  • Ac−dc Adapters for Tablets
  • General Ac−dc Adapters
  • Ac-dc Adapters
  • Frequency Foldback down to 26 kHz and Skip−cycle in Light Load Conditions
  • 70−ms Timer−based Auto−recovery Short−circuit Protection
  • Frequency Jittering in Normal and Frequency Foldback Modes
  • +500 mA/ −500 mA Source/Sink Drive Capability
  • Fixed−frequency 65−kHz or 100−kHz Current−mode Control Operation
  • Pb−Free Device
  • Adjustable Over Power Protection (OPP) Circuit, Disabled at Low Line
  • Adjustable Brown Out Level
  • Internally−fixed Slope Compensation Ramp
  • Internally−fixed 4−ms Soft−start
  • Double Hiccup Auto−recovery Short−circuit Protection
  • Pre−short Ready for Latched OCP Option
  • Latched OVP Protection on Vcc
  • Latched Inputs for Improved Robustness (OVP and OTP implementations)
  • EPS 2.0 Compliant

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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

NCP1256ASN100T1G

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Active

CAD Model

Pb

A

H

P

TSOP-6

318G-02

3

260

REEL

3000

N

Flyback

Current Mode

100

Yes

8.3

Yes

Yes

Yes

35

500 / 500

$0.2133

More Details

NCP1256ASN65T1G

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Active

CAD Model

Pb

A

H

P

TSOP-6

318G-02

3

260

REEL

3000

N

Flyback

Current Mode

65

Yes

8.3

Yes

Yes

Yes

35

500 / 500

$0.2133

More Details

NCP1256BSN100T1G

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Obsolete

CAD Model

Pb

A

H

P

TSOP-6

318G-02

3

260

REEL

3000

N

Flyback

Current Mode

100

Yes

8.3

Yes

No

Yes

35

500 / 500

Price N/A

More Details

NCP1256BSN65T1G

Loading...

Active

CAD Model

Pb

A

H

P

TSOP-6

318G-02

3

260

REEL

3000

N

Flyback

Current Mode

65

Yes

8.3

Yes

No

Yes

35

500 / 500

$0.2133

More Details

NCP1256ESN65T1G

Loading...

Active

CAD Model

Pb

A

H

P

TSOP-6

318G-02

3

260

REEL

3000

N

Flyback

Current Mode

65

Yes

8.3

Yes

Yes

Yes

35

500 / 500

$0.2347

More Details

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