Offline Controllers | NCP1256

低功率离线 PWM 电流模式，带欠电压保护

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概览

NCP1256 包括构建几瓦到几十瓦成本高效开关模式电源所需的一切功能。该零件采用微型 TSOP-6 封装，供电范围高达 30 V，具有带抖动的 65 kHz 或 100 kHz 开关电路，在峰值电流模式控制下运行。当辅助侧功率开始降低时，该控制器将其开关频率自动折回至最低 26 kHz 的水平。当功率进一步下降时，该零部件进入跳过周期，同时对峰值电流进行限制。 NCP1256 带有若干保护功能，如基于计时器的短路保护、无损耗 OPP 和易于调节的欠电压 (BO) 引脚。提供了两个输入，以可行方式锁存关断该零件，例如使用 OVP 和 OTP 事件。有若干选项用来选择锁存或自动恢复。

  • 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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状态

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

NCP1256ASN100T1G

Loading...

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

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

$0.2133

More Details

NCP1256BSN100T1G

Loading...

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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