CXSD6276A单电源电压5~12V两个电源电压驱动双低成本N通道mosfet自适应穿透保护内置反馈补偿电压型PWM控制 0~100%占空比快速瞬态响应

首页 > 新闻中心 > 行业新闻

发表时间：2020-04-21浏览次数：175

CXSD6276A单电源电压5~12V两个电源电压驱动双低成本N通道mosfet自适应穿透保护内置反馈补偿电压型PWM控制 0~100%占空比快速瞬态响应

目录54V嘉泰姆

1.产品概述         2.产品特点54V嘉泰姆
3.应用范围       4.下载产品资料PDF文档 54V嘉泰姆
5.产品封装图                     6.电路原理图             54V嘉泰姆
7.功能概述       8.相关产品54V嘉泰姆

一,产品概述(General Description) 54V嘉泰姆

The CXSD6276 CXSD6276A is a fixed 300kHz frequency, voltage mode, and54V嘉泰姆
synchronous PWM controller. The device drives two low cost N-channel54V嘉泰姆
MOSFETs and is de-signed to work with single 5~12V or two supply54V嘉泰姆
voltage(s), providing excellent regulation for load transients.54V嘉泰姆
The CXSD6276 CXSD6276A integrates controls, monitoring, and protection functions54V嘉泰姆
into a single 8-pin package to provide a low cost and perfect power solution.54V嘉泰姆
A power-on-reset (POR) circuit monitors the VCC supply voltage to prevent54V嘉泰姆
wrong logic controls. An internal 0.8V reference provides low output voltage54V嘉泰姆
down to 0.8V for further applications. An built-in digital soft-start with fixed54V嘉泰姆
soft-start interval prevents the output voltage from overshoot as well as limits54V嘉泰姆
the input current. The controller’s over-current protection monitors the output54V嘉泰姆
current by using the voltage drop across the low-side MOSFET’s RDS(ON),54V嘉泰姆
eliminating the need of a current sensing resistor. Additional under voltage and54V嘉泰姆
over voltage protections monitor the voltage on FB pin for short-circuit and54V嘉泰姆
over-voltage protections. The over-current protection cycles the soft-start54V嘉泰姆
function until 4 over-current events are counted.Pulling and holding the voltage54V嘉泰姆
on OCSET pin below 0.15V with an open drain device shuts down the controller.54V嘉泰姆
二.产品特点(Features)54V嘉泰姆

1.)Operating with Single 5~12V Supply Voltage54V嘉泰姆
2.)or Two Supply Voltages54V嘉泰姆
3.)Drive Dual Low Cost N-Channel MOSFETs54V嘉泰姆
Adaptive Shoot-Through Protection54V嘉泰姆
4.)Built-in Feedback Compensation54V嘉泰姆
Voltage-Mode PWM Control54V嘉泰姆
0~100% Duty Ratio54V嘉泰姆
Fast Transient Response54V嘉泰姆
5.)±2% 0.8V Reference54V嘉泰姆
Over Line, Load Regulation, and Operating 54V嘉泰姆
6.)Temperature Programmable Over-Current Protection54V嘉泰姆
Using RDS(ON) of Low-Side MOSFET54V嘉泰姆
7.)Hiccup-Mode Under-Voltage Protection54V嘉泰姆
8.)118% Over-Voltage Protection54V嘉泰姆
9.)Adjustable Output Voltage54V嘉泰姆
10.)Small Converter Size54V嘉泰姆
300kHz Constant Switching Frequency54V嘉泰姆
Small SOP-8 Package54V嘉泰姆
11.)Built-In Digital Soft-Start54V嘉泰姆
12.)Shutdown Control Using an External MOSFET54V嘉泰姆
13.)Lead Free and Green Devices Available54V嘉泰姆
三,应用范围 (Applications)54V嘉泰姆

Motherboard54V嘉泰姆
Graphics Card54V嘉泰姆
High Current, up to 20A, DC-DC Converters54V嘉泰姆
四.下载产品资料PDF文档 54V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！54V嘉泰姆

QQ截图20160419174301.jpg 54V嘉泰姆

五,产品封装图 (Package)54V嘉泰姆

54V嘉泰姆

BOOT (Pin 1)54V嘉泰姆

This pin provides ground referenced bias voltage to the high-side MOSFET driver. A bootstrap circuit with a diode connected to 5~12V is used to create a voltage suitable to drive a logic-level N-channel MOSFET.54V嘉泰姆
UGATE (Pin 2)54V嘉泰姆
Connect this pin to the high-side N-channel MOSFET’s gate. This pin provides gate drive for the high-side MOSFET.54V嘉泰姆
GND (Pin 3)54V嘉泰姆
The GND terminal provides return path for the IC’s biascurrent and the low-side MOSFET driver’s pull-low current. Connect the pin to the system ground via very low impedance layout on PCBs.54V嘉泰姆
LGATE (Pin 4)54V嘉泰姆
Connect this pin to the low-side N-channel MOSFET’s gate. This pin provides gate drive for the low-side MOSFET. 54V嘉泰姆
VCC (Pin 5)54V嘉泰姆
Connect this pin to a 5~12V supply voltage. This pin provides bias supply for the control circuitry and the low-side MOSFET driver. The voltage at this pin is monitored for the Power-On-Reset (POR) purpose. 54V嘉泰姆
FB (Pin 6)54V嘉泰姆
This pin is the inverting input of the internal Gm amplifier.Connect this pin to the output (VOUT) of the converter via an external resistor divider for closed-loop operation.The output voltage set by the resistor divider is deter-mined using the following formula :54V嘉泰姆
where R1 is the resistor connected from VOUT to FB ,and R2 is the resistor connected from FB to GND. The FB pin is also monitored for under and over-voltage events. 54V嘉泰姆
OCSET (Pin 7)54V嘉泰姆
The OCSET is a dual-function input pin for over-current protection and shutdown control. Connect a resistor (ROCSET) from this pin to the Drain of the low-side MOSFET. This resistor, an internal 40μA current source (IOCSET), and the MOSFET’s on-resistance(RDSON) set the converter over-current trip level (IPEAK) according to the following formula:54V嘉泰姆
Pulling and holding this pin below 0.15V with an open drain device, with very low parasitic capacitor, shuts down the IC with floating output and also resets the over-current counter. Releasing OCSET pin initiates a new soft-start and the converter works again.54V嘉泰姆
PHASE (Pin 8) 54V嘉泰姆
The pin provides return path for the high-side MOSFETdriver’s pull-low current. Connect this pin to the high-side MOSFET’s source54V嘉泰姆
六.电路原理图54V嘉泰姆
54V嘉泰姆
七,功能概述54V嘉泰姆
Power-On-Reset (POR) 54V嘉泰姆
The CXSD6276 monitors the VCC voltage (V CC) for Power-On-Reset function, preventing wrong logic operation during powering on. When the VCC voltage is ready, the CXSD6276 starts a start-up process and then ramps the output voltage up to the target voltage. 54V嘉泰姆
Soft-Start54V嘉泰姆
The CXSD6276 has a built-in digital soft-start to control the output voltage rise and limit the current surge at the start-up. During the soft-start, an internal ramp con-nected to the one of the positive inputs of the Gm amplifier rises up from 0V to 2V to replace the reference voltage (0.8V) until the ramp voltage reaches the refer-54V嘉泰姆
ence voltage. The soft-start interval is about 3.2mstypical, independent of the converter’s input and out-put voltages.54V嘉泰姆
Over-Current Protection (OCP)54V嘉泰姆
The over-current function protects the switching c o nverter against over-current or short-circuit conditions. The controller senses the inductor current by detecting the drain-to-source voltage, product of the inductor’s current and the on-resistance, of the low-side MOSFET during it’s on-state. This method enhances the converter’s efficiency and reduces cost by eliminating a current sensing resistor.A resistor (ROCSET), connected from the OCSET to the54V嘉泰姆
Over-Current Protection (OCP) (Cont.)54V嘉泰姆
low-side MOSFET’s drain, programs the over-current trip level. An internal 40μA (typical) current source flowing through the ROCSET develops a voltage (VROCSET) across the ROCSET. When the VOCSET 54V嘉泰姆

八,相关产品 更多同类产品...... 54V嘉泰姆

Switching Regulator > Buck Controller54V嘉泰姆
Part_No 54V嘉泰姆	Package 54V嘉泰姆	Archi54V嘉泰姆 tectu54V嘉泰姆	Phase54V嘉泰姆	No.of54V嘉泰姆 PWM54V嘉泰姆 Output54V嘉泰姆	Output 54V嘉泰姆 Current54V嘉泰姆 (A) 54V嘉泰姆	Input54V嘉泰姆 Voltage (V) 54V嘉泰姆		Reference54V嘉泰姆 Voltage54V嘉泰姆 (V) 54V嘉泰姆	Bias 54V嘉泰姆 Voltage54V嘉泰姆 (V) 54V嘉泰姆	Quiescent54V嘉泰姆 Current54V嘉泰姆 (uA) 54V嘉泰姆
Part_No 54V嘉泰姆	Package 54V嘉泰姆	Archi54V嘉泰姆 tectu54V嘉泰姆	Phase54V嘉泰姆	No.of54V嘉泰姆 PWM54V嘉泰姆 Output54V嘉泰姆	Output 54V嘉泰姆 Current54V嘉泰姆 (A) 54V嘉泰姆	min54V嘉泰姆	max54V嘉泰姆	Reference54V嘉泰姆 Voltage54V嘉泰姆 (V) 54V嘉泰姆	Bias 54V嘉泰姆 Voltage54V嘉泰姆 (V) 54V嘉泰姆	Quiescent54V嘉泰姆 Current54V嘉泰姆 (uA) 54V嘉泰姆
CXSD627354V嘉泰姆	SOP-1454V嘉泰姆 QSOP-1654V嘉泰姆 QFN4x4-1654V嘉泰姆	VM 54V嘉泰姆	1 54V嘉泰姆	1 54V嘉泰姆	3054V嘉泰姆	2.9 54V嘉泰姆	13.254V嘉泰姆	0.954V嘉泰姆	12 54V嘉泰姆	800054V嘉泰姆
CXSD627454V嘉泰姆	SOP-854V嘉泰姆	VM 54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	2054V嘉泰姆	2.9 54V嘉泰姆	13.2 54V嘉泰姆	0.854V嘉泰姆	1254V嘉泰姆	500054V嘉泰姆
CXSD6274C54V嘉泰姆	SOP-854V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	2054V嘉泰姆	2.954V嘉泰姆	13.254V嘉泰姆	0.854V嘉泰姆	1254V嘉泰姆	500054V嘉泰姆
CXSD627554V嘉泰姆	QFN4x4-2454V嘉泰姆	VM54V嘉泰姆	254V嘉泰姆	154V嘉泰姆	6054V嘉泰姆	3.154V嘉泰姆	13.254V嘉泰姆	0.654V嘉泰姆	1254V嘉泰姆	500054V嘉泰姆
CXSD627654V嘉泰姆	SOP-854V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	2054V嘉泰姆	2.254V嘉泰姆	13.254V嘉泰姆	0.854V嘉泰姆	5~1254V嘉泰姆	210054V嘉泰姆
CXSD6276A54V嘉泰姆	SOP-854V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	2054V嘉泰姆	2.254V嘉泰姆	13.254V嘉泰姆	0.854V嘉泰姆	5~1254V嘉泰姆	210054V嘉泰姆
CXSD6277/A/B54V嘉泰姆	SOP8\|TSSOP854V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	554V嘉泰姆	554V嘉泰姆	13.254V嘉泰姆	1.25\|0.854V嘉泰姆	5~1254V嘉泰姆	300054V嘉泰姆
CXSD627854V嘉泰姆	SOP-854V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	1054V嘉泰姆	3.354V嘉泰姆	5.554V嘉泰姆	0.854V嘉泰姆	554V嘉泰姆	210054V嘉泰姆
CXSD6279B54V嘉泰姆	SOP-1454V嘉泰姆	VM 54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	1054V嘉泰姆	554V嘉泰姆	13.254V嘉泰姆	0.854V嘉泰姆	1254V嘉泰姆	200054V嘉泰姆
CXSD628054V嘉泰姆	TSSOP-2454V嘉泰姆 \|QFN5x5-3254V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	254V嘉泰姆	2054V嘉泰姆	554V嘉泰姆	13.254V嘉泰姆	0.654V嘉泰姆	5~1254V嘉泰姆	400054V嘉泰姆
CXSD6281N54V嘉泰姆	SOP1454V嘉泰姆 QSOP1654V嘉泰姆 QFN-1654V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	3054V嘉泰姆	2.954V嘉泰姆	13.254V嘉泰姆	0.954V嘉泰姆	1254V嘉泰姆	400054V嘉泰姆
CXSD628254V嘉泰姆	SOP-1454V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	3054V嘉泰姆	2.254V嘉泰姆	13.254V嘉泰姆	0.654V嘉泰姆	1254V嘉泰姆	500054V嘉泰姆
CXSD6282A54V嘉泰姆	SOP-1454V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	3054V嘉泰姆	2.254V嘉泰姆	13.254V嘉泰姆	0.654V嘉泰姆	1254V嘉泰姆	500054V嘉泰姆
CXSD628354V嘉泰姆	SOP-1454V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	2554V嘉泰姆	2.254V嘉泰姆	13.254V嘉泰姆	0.854V嘉泰姆	1254V嘉泰姆	500054V嘉泰姆
CXSD6284/A54V嘉泰姆	LQFP7x7 4854V嘉泰姆 TQFN7x7-4854V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	654V嘉泰姆	0.01554V嘉泰姆	1.454V嘉泰姆	6.554V嘉泰姆	-54V嘉泰姆	554V嘉泰姆	180054V嘉泰姆
CXSD628554V嘉泰姆	TSSOP-24P54V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	254V嘉泰姆	2054V嘉泰姆	2.9754V嘉泰姆	5.554V嘉泰姆	0.854V嘉泰姆	5~1254V嘉泰姆	500054V嘉泰姆
CXSD628654V嘉泰姆	SOP-1454V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	1054V嘉泰姆	554V嘉泰姆	13.254V嘉泰姆	0.854V嘉泰姆	1254V嘉泰姆	300054V嘉泰姆
CXSD628754V嘉泰姆	SOP-8-P\|DIP-854V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	154V嘉泰姆	3054V嘉泰姆	2.954V嘉泰姆	13.254V嘉泰姆	1.254V嘉泰姆	1254V嘉泰姆	300054V嘉泰姆
CXSD628854V嘉泰姆	SSOP2854V嘉泰姆 QFN4x4-2454V嘉泰姆	VM54V嘉泰姆	154V嘉泰姆	254V嘉泰姆	2054V嘉泰姆	554V嘉泰姆	2454V嘉泰姆	0.954V嘉泰姆

上一篇：CXSD6276是固定的300kHz频率电压模式和同步PWM控制器两个低成本N通道mosfet设计为单电源5~12V或双电源工作电压为负载瞬变提供良好的调节

下一篇：双N通道mosfetCXSD6277/A/B车载直流-直流转换器低成本的同步降压调节器VCC和VC电源的上电复位POR外部可编程软启动检测到输出短路时锁定设备的电压检测

发表评论

产品中心

电源管理

LED驱动电路

音频放大IC

电机风扇驱动芯片

MCU存储ADC时钟数据线

功率器件

隔离芯片

电池充电芯片

技术支持

产品方案

质量承诺

联系我们