Offline Controllers | NCP1203

PWM 控制器，固定频率，反激，电流模式

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CAD模型

概览

NCP1203 位于 SO-8 或 DIP-8 封装内，是实现超紧凑型开关模式电源的重要飞跃，是替代 UC384X 器件的绝佳备选。由于专属的 SmartMOS 极高电压技术，该电路使用极少外部部件即可实施完整的离线 AC/DC 适配器、电池充电器和大功率 SMPS。通过以固定的 40 kHz、60 kHz 或 100 kHz 频率运行的内部结构，该控制器具有高电压启动 FET，可确保明确的无损耗启动序列。其电流模式控制能够很自然地提供良好的音频敏感性和按脉冲控制。例如，在输出功率需求消失，电流设定点降至某个特定值以下时，该集成电路将进入所谓的跳过周期模式，在轻负载下提供卓越能效。因为这发生在用户可调节的低峰值电流下，所以不会发出噪音。NCP1203 还包括了有效的保护电路，在输出超负载条件下会禁用输出脉冲，同时器件进入安全突发模式，尝试重启。一旦故障清除，器件自动恢复。最后，带有迟滞的高温关断有助于工件安全耐用的电源。

  • 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

物质成分

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可订购器件:

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产品

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

NCP1203D100R2G

Contact Sales

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

Contact Sales

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

Contact Sales

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

Contact Sales

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

Contact Sales

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

Contact Sales

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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