大功率DC转换器PWM控制CXSD62395同步整流buck拓扑中驱动两个N通道mosfet快速瞬态响应恒定300kHz开关频率

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1.产品概述       2.产品特点     VGz嘉泰姆

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   产品概述 返回TOPVGz嘉泰姆

The CXSD62395 provides complete control and protection for a DC-DC converter for high power applications. It is designed to drive two N-channel MOSFETs in a synchronous-rectified buck topology. The CXSD62395 integrates all of the control, and protection functions into a single package. The CXSD62395 provides simple, single feedback loop, voltage-mode control with fast transient response. It includes a 300KHz free-running triangle-wave oscillator. The error amplifier features a 15MHz gain-bandwidth product which provides high converter bandwidth for fast transient performance. The resulting PWM duty ratio ranges from 0% to 80%. The reference voltage is 0.8V, 2% accuracy. The CXSD62395 has internal soft start and executes cycle-by-cycle current limit during soft start interval. The CXSD62395 monitors the current by using the RDS(ON) of the low-side MOSFET which eliminates the need for a current sensing resistor. The under-voltage protection function monitors voltage at FB pin. The over-current and under-voltage events after soft-start interval trigger hiccup mode protection.

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Drives Two N-Channel MOSFETs VGz嘉泰姆

Operates at 5V Supply Voltage VGz嘉泰姆

Voltage-Mode PWM Control VGz嘉泰姆

Fast Transient Response VGz嘉泰姆

0.8V, 2% Accuracy Reference Voltage VGz嘉泰姆

Internal Soft Start VGz嘉泰姆

Constant 300kHz Switching Frequency VGz嘉泰姆

Over-Current Fault Monitors by Using Low-Side MOSFET RDS(ON) VGz嘉泰姆

Output Under-Voltage ProtectionVGz嘉泰姆

   应用范围 返回TOPVGz嘉泰姆

16V to 30V Input High Power DC-DC Regulators VGz嘉泰姆

Low-Voltage Distributed Power SuppliesVGz嘉泰姆

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     需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！VGz嘉泰姆

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