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TOPukY嘉泰姆

„ Drives Two N-Channel MOSFETs ukY嘉泰姆

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

„ Internal Bootstrap Diode Circuit ukY嘉泰姆

„ Voltage-Mode PWM Control ukY嘉泰姆

„ Fast Transient Response ukY嘉泰姆

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

„ Internal Soft Start ukY嘉泰姆

„ Constant 300kHz Switching Frequency ukY嘉泰姆

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

„ Output Under-Voltage ProtectionukY嘉泰姆

应用范围 返回TOPukY嘉泰姆

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

„ Low-Voltage Distributed Power SuppliesukY嘉泰姆

技术规格书（产品PDF) 返回TOP ukY嘉泰姆

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！ukY嘉泰姆

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产品封装图 返回TOPukY嘉泰姆

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电路原理图 返回TOPukY嘉泰姆

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Synchronous Step Down ControllerukY嘉泰姆
Part NO.ukY嘉泰姆	Vin(V)ukY嘉泰姆 minukY嘉泰姆	Vin(V)ukY嘉泰姆 maxukY嘉泰姆	IOUTukY嘉泰姆 (A)ukY嘉泰姆	FSWukY嘉泰姆 (kHz)ukY嘉泰姆	FBukY嘉泰姆 (V)ukY嘉泰姆	DutyukY嘉泰姆 max(%)ukY嘉泰姆	VOUTukY嘉泰姆 (ms)ukY嘉泰姆	NoteukY嘉泰姆	PackageukY嘉泰姆
CXSD62393ukY嘉泰姆	2.5ukY嘉泰姆	5.5ukY嘉泰姆	--ukY嘉泰姆	300ukY嘉泰姆	1ukY嘉泰姆	100ukY嘉泰姆	15ukY嘉泰姆	EXT, VDD, GND, CE, FB, Voltage ModeukY嘉泰姆	SOT-23-5ukY嘉泰姆
CXSD62394ukY嘉泰姆	5ukY嘉泰姆	12ukY嘉泰姆	OCSETukY嘉泰姆	300ukY嘉泰姆	0.8ukY嘉泰姆	--ukY嘉泰姆	14ukY嘉泰姆	BST, DH, GND, DL, VCC, FB, OC, LXukY嘉泰姆	SOP-8ukY嘉泰姆
CXSD62395ukY嘉泰姆	--ukY嘉泰姆	24ukY嘉泰姆	OCSETukY嘉泰姆	300ukY嘉泰姆	0.8ukY嘉泰姆	--ukY嘉泰姆	8ukY嘉泰姆	BST, DH, GND, DL, VCC, FB, OC, LXukY嘉泰姆	SOP-8ukY嘉泰姆
CXSD62396ukY嘉泰姆	10ukY嘉泰姆	28ukY嘉泰姆	--ukY嘉泰姆	400ukY嘉泰姆	0.8ukY嘉泰姆	80ukY嘉泰姆	3ukY嘉泰姆	VCC, DL, GND, DH, BST, LX, VIN, FBukY嘉泰姆	TSOT-23-8ukY嘉泰姆
CXSD62397ukY嘉泰姆	5ukY嘉泰姆	23ukY嘉泰姆	OCSETukY嘉泰姆	400ukY嘉泰姆	0.8ukY嘉泰姆	80ukY嘉泰姆	8ukY嘉泰姆	DH, LX, DL, GND, FB, OC, VCC, BSTukY嘉泰姆	SOP-8ukY嘉泰姆
CXSD62398ukY嘉泰姆	4.5ukY嘉泰姆	27ukY嘉泰姆	RSENSEukY嘉泰姆	ADJukY嘉泰姆	0.7ukY嘉泰姆	93ukY嘉泰姆	ADJukY嘉泰姆	Asynchronous Voltage Mode ControllerukY嘉泰姆	MSOP-10(FD)ukY嘉泰姆