5V/12V Input Voltage-Mode Buck PWM Controller CXSD62394 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 s

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The CXSD62394 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 CXSD62394 integrates all of the control, and protection functions into a single package. The CXSD62394 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 CXSD62394 has internal soft start and executes cycle-by-cycle current limit during soft start interval. The CXSD62394 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 oPw嘉泰姆

„ Operates at 5V to 12V Supply Voltage oPw嘉泰姆

„ Voltage-Mode PWM Control oPw嘉泰姆

„ Fast Transient Response oPw嘉泰姆

„ 0.8V, 2% Accuracy Reference Voltage oPw嘉泰姆

„ Internal Soft Start oPw嘉泰姆

„ Constant 300kHz Switching Frequency oPw嘉泰姆

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

„ Output Under-Voltage ProtectionoPw嘉泰姆

   应用范围 返回TOPoPw嘉泰姆

„ High Power DC-DC Regulators oPw嘉泰姆

„ Low-Voltage Distributed Power SuppliesoPw嘉泰姆

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