Secondary Side Controllers | NCP4304

辅助侧控制器，同步整流，用于高能效 SMPS 拓扑结构

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概览

NCP4304A/B 是一款全功能控制器和驱动器，专门为控制开关模式电源中的同步整流电路而设计。由于其多功能性，它可以用于反激、正向和半桥谐振 LLC 等多种拓扑结构中。外部可调最短开关时间的组合有助于抵御 PCB 布局和其他寄生元件产生的振铃。因此，可以保证 SR 系统可靠的无噪声运行。极短关断延迟时间、驱动器的高汲电流能力以及自动封装寄生电感补偿系统可最大程度延长同步整流 MOSFET 导通时间，实现 SMPS 能效的进一步提高。最后，较宽的运行 VCC 范围结合两个版本的驱动器电压箝位，简化了 SR 系统在 24 V 输出应用中的实施。

  • High Power Density AC/DC Power Supplies
  • Notebook Adapters
  • Server Power Supplies
  • ATX Power Supplies
  • Precise True Secondary Zero Current Detection with Adjustable Threshold
  • Automatic Parasitic Inductance Compensation
  • Typically 40 ns Turn off Delay from Current Sense Input to Driver
  • Zero Current Detection Pin Capability up to 200 V
  • Optional Ultrafast Trigger Input
  • Disable Input
  • Adjustable Minimum ON Time and Minimum OFF Time
  • 5 A/2.5 A Peak Current Sink/Source Drive Capability
  • Operating Voltage Range up to 30V

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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

VCC Max (V)

Vref Typ (V)

ICC Max (A)

TA Min (°C)

TA Max (°C)

Reference Price

NCP4304ADR2G

Contact Sales

Active

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

Y

30

N/A

0.0066

-40

125

$0.4782

More Details

NCP4304AMNTWG

Contact Sales

Active

CAD Model

Pb

A

H

P

DFN-8

488AF

1

260

REEL

4000

N

30

N/A

0.0066

-40

125

$0.741

More Details

NCP4304BDR2G

Contact Sales

Active

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

Y

30

N/A

0.0062

-40

125

$0.6207

More Details

NCP4304BMNTWG

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

DFN-8

488AF

1

260

REEL

4000

N

30

N/A

0.0062

-40

125

Price N/A

More Details

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