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

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.

产品特点 返回TOPeWZ嘉泰姆

Drives Two N-Channel MOSFETs eWZ嘉泰姆

Operates at 5V Supply Voltage eWZ嘉泰姆

Voltage-Mode PWM Control eWZ嘉泰姆

Fast Transient Response eWZ嘉泰姆

0.8V, 2% Accuracy Reference Voltage eWZ嘉泰姆

Internal Soft Start eWZ嘉泰姆

Constant 300kHz Switching Frequency eWZ嘉泰姆

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

Output Under-Voltage ProtectioneWZ嘉泰姆

应用范围 返回TOPeWZ嘉泰姆

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

Low-Voltage Distributed Power SupplieseWZ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！eWZ嘉泰姆

QQ截图20160419174301.jpg eWZ嘉泰姆

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Synchronous Step Down ControllereWZ嘉泰姆
Part NO.eWZ嘉泰姆	Vin(V)eWZ嘉泰姆 mineWZ嘉泰姆	Vin(V)eWZ嘉泰姆 maxeWZ嘉泰姆	IOUTeWZ嘉泰姆 (A)eWZ嘉泰姆	FSWeWZ嘉泰姆 (kHz)eWZ嘉泰姆	FBeWZ嘉泰姆 (V)eWZ嘉泰姆	DutyeWZ嘉泰姆 max(%)eWZ嘉泰姆	VOUTeWZ嘉泰姆 (ms)eWZ嘉泰姆	NoteeWZ嘉泰姆	PackageeWZ嘉泰姆
CXSD62393eWZ嘉泰姆	2.5eWZ嘉泰姆	5.5eWZ嘉泰姆	--eWZ嘉泰姆	300eWZ嘉泰姆	1eWZ嘉泰姆	100eWZ嘉泰姆	15eWZ嘉泰姆	EXT, VDD, GND, CE, FB, Voltage ModeeWZ嘉泰姆	SOT-23-5eWZ嘉泰姆
CXSD62394eWZ嘉泰姆	5eWZ嘉泰姆	12eWZ嘉泰姆	OCSETeWZ嘉泰姆	300eWZ嘉泰姆	0.8eWZ嘉泰姆	--eWZ嘉泰姆	14eWZ嘉泰姆	BST, DH, GND, DL, VCC, FB, OC, LXeWZ嘉泰姆	SOP-8eWZ嘉泰姆
CXSD62395eWZ嘉泰姆	--eWZ嘉泰姆	24eWZ嘉泰姆	OCSETeWZ嘉泰姆	300eWZ嘉泰姆	0.8eWZ嘉泰姆	--eWZ嘉泰姆	8eWZ嘉泰姆	BST, DH, GND, DL, VCC, FB, OC, LXeWZ嘉泰姆	SOP-8eWZ嘉泰姆
CXSD62396eWZ嘉泰姆	10eWZ嘉泰姆	28eWZ嘉泰姆	--eWZ嘉泰姆	400eWZ嘉泰姆	0.8eWZ嘉泰姆	80eWZ嘉泰姆	3eWZ嘉泰姆	VCC, DL, GND, DH, BST, LX, VIN, FBeWZ嘉泰姆	TSOT-23-8eWZ嘉泰姆
CXSD62397eWZ嘉泰姆	5eWZ嘉泰姆	23eWZ嘉泰姆	OCSETeWZ嘉泰姆	400eWZ嘉泰姆	0.8eWZ嘉泰姆	80eWZ嘉泰姆	8eWZ嘉泰姆	DH, LX, DL, GND, FB, OC, VCC, BSTeWZ嘉泰姆	SOP-8eWZ嘉泰姆
CXSD62398eWZ嘉泰姆	4.5eWZ嘉泰姆	27eWZ嘉泰姆	RSENSEeWZ嘉泰姆	ADJeWZ嘉泰姆	0.7eWZ嘉泰姆	93eWZ嘉泰姆	ADJeWZ嘉泰姆	Asynchronous Voltage Mode ControllereWZ嘉泰姆	MSOP-10(FD)eWZ嘉泰姆