电压模式脉宽调制控制CXSD62397快速瞬态响应同步整流buck拓扑中驱动两个N通道mosfet大功率DC转换器恒定300kHz开关频率

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.

产品特点 返回TOPSdU嘉泰姆

„ Drives Two N-Channel MOSFETs SdU嘉泰姆

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

„ Internal Bootstrap Diode Circuit SdU嘉泰姆

„ Voltage-Mode PWM Control SdU嘉泰姆

„ Fast Transient Response SdU嘉泰姆

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

„ Internal Soft Start SdU嘉泰姆

„ Constant 300kHz Switching Frequency SdU嘉泰姆

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

„ Output Under-Voltage ProtectionSdU嘉泰姆

应用范围 返回TOPSdU嘉泰姆

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

„ Low-Voltage Distributed Power SuppliesSdU嘉泰姆

技术规格书（产品PDF) 返回TOP SdU嘉泰姆

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产品封装图 返回TOPSdU嘉泰姆

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电路原理图 返回TOPSdU嘉泰姆

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Synchronous Step Down ControllerSdU嘉泰姆
Part NO.SdU嘉泰姆	Vin(V)SdU嘉泰姆 minSdU嘉泰姆	Vin(V)SdU嘉泰姆 maxSdU嘉泰姆	IOUTSdU嘉泰姆 (A)SdU嘉泰姆	FSWSdU嘉泰姆 (kHz)SdU嘉泰姆	FBSdU嘉泰姆 (V)SdU嘉泰姆	DutySdU嘉泰姆 max(%)SdU嘉泰姆	VOUTSdU嘉泰姆 (ms)SdU嘉泰姆	NoteSdU嘉泰姆	PackageSdU嘉泰姆
CXSD62393SdU嘉泰姆	2.5SdU嘉泰姆	5.5SdU嘉泰姆	--SdU嘉泰姆	300SdU嘉泰姆	1SdU嘉泰姆	100SdU嘉泰姆	15SdU嘉泰姆	EXT, VDD, GND, CE, FB, Voltage ModeSdU嘉泰姆	SOT-23-5SdU嘉泰姆
CXSD62394SdU嘉泰姆	5SdU嘉泰姆	12SdU嘉泰姆	OCSETSdU嘉泰姆	300SdU嘉泰姆	0.8SdU嘉泰姆	--SdU嘉泰姆	14SdU嘉泰姆	BST, DH, GND, DL, VCC, FB, OC, LXSdU嘉泰姆	SOP-8SdU嘉泰姆
CXSD62395SdU嘉泰姆	--SdU嘉泰姆	24SdU嘉泰姆	OCSETSdU嘉泰姆	300SdU嘉泰姆	0.8SdU嘉泰姆	--SdU嘉泰姆	8SdU嘉泰姆	BST, DH, GND, DL, VCC, FB, OC, LXSdU嘉泰姆	SOP-8SdU嘉泰姆
CXSD62396SdU嘉泰姆	10SdU嘉泰姆	28SdU嘉泰姆	--SdU嘉泰姆	400SdU嘉泰姆	0.8SdU嘉泰姆	80SdU嘉泰姆	3SdU嘉泰姆	VCC, DL, GND, DH, BST, LX, VIN, FBSdU嘉泰姆	TSOT-23-8SdU嘉泰姆
CXSD62397SdU嘉泰姆	5SdU嘉泰姆	23SdU嘉泰姆	OCSETSdU嘉泰姆	400SdU嘉泰姆	0.8SdU嘉泰姆	80SdU嘉泰姆	8SdU嘉泰姆	DH, LX, DL, GND, FB, OC, VCC, BSTSdU嘉泰姆	SOP-8SdU嘉泰姆
CXSD62398SdU嘉泰姆	4.5SdU嘉泰姆	27SdU嘉泰姆	RSENSESdU嘉泰姆	ADJSdU嘉泰姆	0.7SdU嘉泰姆	93SdU嘉泰姆	ADJSdU嘉泰姆	Asynchronous Voltage Mode ControllerSdU嘉泰姆	MSOP-10(FD)SdU嘉泰姆