Offline Controllers | NCP4390

谐振控制器，同步整流器控制，增强式轻负载

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概览

NCP4390是一款先进的脉冲频率调制（PFM）控制器，适用于具有同步整流（SR）功能的LLC谐振转换器，可为隔离式DC/DC转换器提供同类最佳的效率。它采用基于电荷控制的电流模式控制技术，将振荡器的三角波与集成的开关电流信息结合起来，从而确定开关频率。这为功率级提供了更好的控制转输出功能，简化了反馈环路设计，同时实现了真正的输入功率限制功能。闭环软启动可防止误差放大器饱和，并允许输出电压单调上升而不受负载条件的影响。双边缘跟踪自适应死区时间控制可最大限度地缩短体二极管的导通时间，从而最大限度地提高效率。

  • 高能效100W至2000W电源，带PFC预调节器

  • 大型LED显示屏
  • 电信前端电源
  • 工业电源系统
  • 计算机电源
  • 初级服务器

  • 电荷电流控制
  • 自适应SR带双边缘跟踪
  • 绿色功能，提供更广泛的PWM模式入门级功能，包括禁用PWM
  • 闭环软启动
  • 可编程死区时间
  • 非零电压开关（ZVS）保护
  • 宽工作频率（39kHz ~ 690kHz）
  • 保护功能，自动重新启动、过流保护（OCP）、输出短路保护（OSP）、通过补偿削减限制功率（频率偏移）、带可编程关断延迟时间的过载保护（OLP）、过热保护（OTP）
  • 宽工作温度范围-40°C 至 +125°C

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MSL Type

MSL Temp (°C)

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Container Qty.

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Topology

Control Mode

fsw Typ (kHz)

Stand-by Mode

UVLO (V)

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NCP4390DR2G

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Active

CAD Model

Pb

A

H

P

SOIC-16

751B-05

1

260

REEL

2500

Y

Half-Bridge

Current Mode

Up to 690

Yes

8.6

Yes

No

Yes

20

100 / 100

$0.92

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可靠性数据

Die Related Summary Data

Device: NCP4390DR2G

Equivalent to wafer fab process: CMOS SUB

产品技术

产品技术

等效器件小时

平均故障间隔时间/平均无故障时间（按小时计算）

FITS

CMOS SUB

2

920154574

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Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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