用于离线 SMPS 的高电压开关稳压器

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NCP1072 / NCP1075 产品集成了固定频率电流模式控制器和 700 V MOSFET。NCP1072/5 采用 PDIP-7 或 SOT-223 封装,提供了高水平的集成,包括软启动、频率抖动、短路保护、跳过周期、最大峰值电流设定点、斜坡补偿以及动态自供电(无需辅助绕组)。与其他单片方案不同,NCP1072/5 具有无噪音特性:在正常负载运行期间,在某个可用频率进行开关的时候(65,100,130 kHz)。当输出功率需求消失时,该集成电路将自动进入频率折回模式,在轻负载下提供卓越能效。当功率需求进一步降低时,它进入跳过模式,将待机功耗降低到无负载条件。保护功能包括:检测过载或短路事件的计时器、带自动恢复的过电压保护,以及交流输入线路电压检测。 为了提高待机性能,连接辅助绕组会停止 DSS 运行,有助于将高电平线路的输入功耗降至 50 mW 以下。

  • Auxiliary Supply
  • Isolated Standby Power Supply
  • White Goods
  • Smart Meter / E-Meter
  • LED Drivers
  • Integrated 700 V MOSFET with RDS(on) of 11 Ω
  • Current-Mode Fixed Frequency Operation (65/100/130 kHz)
  • Peak Current: NCP1072 = 250mA / NCP1075 = 450 mA
  • Skip-Cycle Operation at Low Peak Current
  • Dynamic Self-Supply (DSS)
  • Auto-Recovery Output Short Circuit Protection with Timer-Based Detection
  • Frequency Foldback Operation
  • 300µA No Load Power Consumption
  • Frequency Jittering (including during frequency foldback mode)
  • AC Input Voltage Line Detection

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CAD Models

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Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Control Mode

fsw Typ (kHz)

fJitter Typ (%)

Stand-by Mode

RDS(ON) Typ (Ω)

V(BR)DSS Max (V)

IPeak (mA)

HV Start-up Min (V)

DSS (mA)

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Over Power Compensation

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Latch

Reference Price

NCP1075P065G

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Active

CAD Model

Pb

A

H

P

PDIP-7

NA

0

TUBE

50

N

Current Mode

65

Yes

Yes

11

700

450

Yes

8

6.3

Yes

No

No

No

$0.56

More Details

NCP1075P100G

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Last Shipments

CAD Model

Pb

A

H

P

PDIP-7

NA

0

TUBE

50

N

Current Mode

100

Yes

Yes

11

700

450

Yes

8

6.3

Yes

No

No

No

Price N/A

More Details

NCP1075P130G

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Obsolete

CAD Model

Pb

A

H

P

PDIP-7

NA

0

TUBE

50

N

Current Mode

130

Yes

Yes

11

700

450

Yes

8

6.3

Yes

No

No

No

Price N/A

More Details

NCP1075STAT3G

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Active

CAD Model

Pb

A

H

P

SOT-223-4 / TO-261-4D

1

260

REEL

4000

Y

Current Mode

65

Yes

Yes

11

700

450

Yes

8

6.3

Yes

No

No

No

$0.5924

More Details

NCP1075STBT3G

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Active

CAD Model

Pb

A

H

P

SOT-223-4 / TO-261-4D

1

260

REEL

4000

Y

Current Mode

100

Yes

Yes

11

700

450

Yes

8

6.3

Yes

No

No

No

$0.5924

More Details

NCP1075STCT3G

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Active

CAD Model

Pb

A

H

P

SOT-223-4 / TO-261-4D

1

260

REEL

4000

Y

Current Mode

130

Yes

Yes

11

700

450

Yes

8

6.3

Yes

No

No

No

$0.5924

More Details

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