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TOP4Jy嘉泰姆

„ Drives Two N-Channel MOSFETs 4Jy嘉泰姆

„ Operates at 5V to 24V Supply Voltage 4Jy嘉泰姆

„ Internal Bootstrap Diode Circuit 4Jy嘉泰姆

„ Voltage-Mode PWM Control 4Jy嘉泰姆

„ Fast Transient Response 4Jy嘉泰姆

„ 0.8V, 2% Accuracy Reference Voltage 4Jy嘉泰姆

„ Internal Soft Start 4Jy嘉泰姆

„ Constant 300kHz Switching Frequency 4Jy嘉泰姆

„ Over-Current Fault Monitors by Using Low-Side MOSFET RDS(ON) 4Jy嘉泰姆

„ Output Under-Voltage Protection4Jy嘉泰姆

应用范围 返回TOP4Jy嘉泰姆

„ 16V to 30V Input High Power DC-DC Regulators 4Jy嘉泰姆

„ Low-Voltage Distributed Power Supplies4Jy嘉泰姆

技术规格书（产品PDF) 返回TOP 4Jy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！4Jy嘉泰姆

QQ截图20160419174301.jpg 4Jy嘉泰姆

产品封装图 返回TOP4Jy嘉泰姆

4Jy嘉泰姆

电路原理图 返回TOP4Jy嘉泰姆

4Jy嘉泰姆

4Jy嘉泰姆

Synchronous Step Down Controller4Jy嘉泰姆
Part NO.4Jy嘉泰姆	Vin(V)4Jy嘉泰姆 min4Jy嘉泰姆	Vin(V)4Jy嘉泰姆 max4Jy嘉泰姆	IOUT4Jy嘉泰姆 (A)4Jy嘉泰姆	FSW4Jy嘉泰姆 (kHz)4Jy嘉泰姆	FB4Jy嘉泰姆 (V)4Jy嘉泰姆	Duty4Jy嘉泰姆 max(%)4Jy嘉泰姆	VOUT4Jy嘉泰姆 (ms)4Jy嘉泰姆	Note4Jy嘉泰姆	Package4Jy嘉泰姆
CXSD623934Jy嘉泰姆	2.54Jy嘉泰姆	5.54Jy嘉泰姆	--4Jy嘉泰姆	3004Jy嘉泰姆	14Jy嘉泰姆	1004Jy嘉泰姆	154Jy嘉泰姆	EXT, VDD, GND, CE, FB, Voltage Mode4Jy嘉泰姆	SOT-23-54Jy嘉泰姆
CXSD623944Jy嘉泰姆	54Jy嘉泰姆	124Jy嘉泰姆	OCSET4Jy嘉泰姆	3004Jy嘉泰姆	0.84Jy嘉泰姆	--4Jy嘉泰姆	144Jy嘉泰姆	BST, DH, GND, DL, VCC, FB, OC, LX4Jy嘉泰姆	SOP-84Jy嘉泰姆
CXSD623954Jy嘉泰姆	--4Jy嘉泰姆	244Jy嘉泰姆	OCSET4Jy嘉泰姆	3004Jy嘉泰姆	0.84Jy嘉泰姆	--4Jy嘉泰姆	84Jy嘉泰姆	BST, DH, GND, DL, VCC, FB, OC, LX4Jy嘉泰姆	SOP-84Jy嘉泰姆
CXSD623964Jy嘉泰姆	104Jy嘉泰姆	284Jy嘉泰姆	--4Jy嘉泰姆	4004Jy嘉泰姆	0.84Jy嘉泰姆	804Jy嘉泰姆	34Jy嘉泰姆	VCC, DL, GND, DH, BST, LX, VIN, FB4Jy嘉泰姆	TSOT-23-84Jy嘉泰姆
CXSD623974Jy嘉泰姆	54Jy嘉泰姆	234Jy嘉泰姆	OCSET4Jy嘉泰姆	4004Jy嘉泰姆	0.84Jy嘉泰姆	804Jy嘉泰姆	84Jy嘉泰姆	DH, LX, DL, GND, FB, OC, VCC, BST4Jy嘉泰姆	SOP-84Jy嘉泰姆
CXSD623984Jy嘉泰姆	4.54Jy嘉泰姆	274Jy嘉泰姆	RSENSE4Jy嘉泰姆	ADJ4Jy嘉泰姆	0.74Jy嘉泰姆	934Jy嘉泰姆	ADJ4Jy嘉泰姆	Asynchronous Voltage Mode Controller4Jy嘉泰姆	MSOP-10(FD)4Jy嘉泰姆