24V Input Voltage-Mode Buck PWM Controller CXSD62397 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 sync

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The CXSD62397 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 CXSD62397 integrates all of the control, bootstrap diode and protection functions into a single package. The CXSD62397 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 CXSD62397 has internal soft start and executes cycle-by-cycle current limit during soft start interval. The CXSD62397 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 ptM嘉泰姆

„ Operates at 5V to 24V Supply Voltage ptM嘉泰姆

„ Internal Bootstrap Diode Circuit ptM嘉泰姆

„ Voltage-Mode PWM Control ptM嘉泰姆

„ Fast Transient Response ptM嘉泰姆

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

„ Internal Soft Start ptM嘉泰姆

„ Constant 300kHz Switching Frequency ptM嘉泰姆

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

„ Output Under-Voltage ProtectionptM嘉泰姆

   应用范围 返回TOPptM嘉泰姆

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

„ Low-Voltage Distributed Power SuppliesptM嘉泰姆

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