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：213

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EnB嘉泰姆

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

一,产品概述(General Description) EnB嘉泰姆

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

1.)Operating with Single 5~12V Supply VoltageEnB嘉泰姆
2.)or Two Supply VoltagesEnB嘉泰姆
3.)Drive Dual Low Cost N-Channel MOSFETsEnB嘉泰姆
Adaptive Shoot-Through ProtectionEnB嘉泰姆
4.)Built-in Feedback CompensationEnB嘉泰姆
Voltage-Mode PWM ControlEnB嘉泰姆
0~100% Duty RatioEnB嘉泰姆
Fast Transient ResponseEnB嘉泰姆
5.)±2% 0.8V ReferenceEnB嘉泰姆
Over Line, Load Regulation, and Operating EnB嘉泰姆
6.)Temperature Programmable Over-Current ProtectionEnB嘉泰姆
Using RDS(ON) of Low-Side MOSFETEnB嘉泰姆
7.)Hiccup-Mode Under-Voltage ProtectionEnB嘉泰姆
8.)118% Over-Voltage ProtectionEnB嘉泰姆
9.)Adjustable Output VoltageEnB嘉泰姆
10.)Small Converter SizeEnB嘉泰姆
300kHz Constant Switching FrequencyEnB嘉泰姆
Small SOP-8 PackageEnB嘉泰姆
11.)Built-In Digital Soft-StartEnB嘉泰姆
12.)Shutdown Control Using an External MOSFETEnB嘉泰姆
13.)Lead Free and Green Devices AvailableEnB嘉泰姆
三,应用范围 (Applications)EnB嘉泰姆

MotherboardEnB嘉泰姆
Graphics CardEnB嘉泰姆
High Current, up to 20A, DC-DC ConvertersEnB嘉泰姆
四.下载产品资料PDF文档 EnB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！EnB嘉泰姆

QQ截图20160419174301.jpg EnB嘉泰姆

五,产品封装图 (Package)EnB嘉泰姆

EnB嘉泰姆

BOOT (Pin 1)EnB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.EnB嘉泰姆
UGATE (Pin 2)EnB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.EnB嘉泰姆
GND (Pin 3)EnB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.EnB嘉泰姆
LGATE (Pin 4)EnB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. EnB嘉泰姆
VCC (Pin 5)EnB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. EnB嘉泰姆
FB (Pin 6)EnB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 :EnB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. EnB嘉泰姆
OCSET (Pin 7)EnB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:EnB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.EnB嘉泰姆
PHASE (Pin 8) EnB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 sourceEnB嘉泰姆
六.电路原理图EnB嘉泰姆
EnB嘉泰姆
七,功能概述EnB嘉泰姆
Power-On-Reset (POR) EnB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. EnB嘉泰姆
Soft-StartEnB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-EnB嘉泰姆
ence voltage. The soft-start interval is about 3.2mstypical, independent of the converter’s input and out-put voltages.EnB嘉泰姆
Over-Current Protection (OCP)EnB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 theEnB嘉泰姆
Over-Current Protection (OCP) (Cont.)EnB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 EnB嘉泰姆

八,相关产品 更多同类产品...... EnB嘉泰姆

Switching Regulator > Buck ControllerEnB嘉泰姆
Part_No EnB嘉泰姆	Package EnB嘉泰姆	ArchiEnB嘉泰姆 tectuEnB嘉泰姆	PhaseEnB嘉泰姆	No.ofEnB嘉泰姆 PWMEnB嘉泰姆 OutputEnB嘉泰姆	Output EnB嘉泰姆 CurrentEnB嘉泰姆 (A) EnB嘉泰姆	InputEnB嘉泰姆 Voltage (V) EnB嘉泰姆		ReferenceEnB嘉泰姆 VoltageEnB嘉泰姆 (V) EnB嘉泰姆	Bias EnB嘉泰姆 VoltageEnB嘉泰姆 (V) EnB嘉泰姆	QuiescentEnB嘉泰姆 CurrentEnB嘉泰姆 (uA) EnB嘉泰姆
Part_No EnB嘉泰姆	Package EnB嘉泰姆	ArchiEnB嘉泰姆 tectuEnB嘉泰姆	PhaseEnB嘉泰姆	No.ofEnB嘉泰姆 PWMEnB嘉泰姆 OutputEnB嘉泰姆	Output EnB嘉泰姆 CurrentEnB嘉泰姆 (A) EnB嘉泰姆	minEnB嘉泰姆	maxEnB嘉泰姆	ReferenceEnB嘉泰姆 VoltageEnB嘉泰姆 (V) EnB嘉泰姆	Bias EnB嘉泰姆 VoltageEnB嘉泰姆 (V) EnB嘉泰姆	QuiescentEnB嘉泰姆 CurrentEnB嘉泰姆 (uA) EnB嘉泰姆
CXSD6273EnB嘉泰姆	SOP-14EnB嘉泰姆 QSOP-16EnB嘉泰姆 QFN4x4-16EnB嘉泰姆	VM EnB嘉泰姆	1 EnB嘉泰姆	1 EnB嘉泰姆	30EnB嘉泰姆	2.9 EnB嘉泰姆	13.2EnB嘉泰姆	0.9EnB嘉泰姆	12 EnB嘉泰姆	8000EnB嘉泰姆
CXSD6274EnB嘉泰姆	SOP-8EnB嘉泰姆	VM EnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	20EnB嘉泰姆	2.9 EnB嘉泰姆	13.2 EnB嘉泰姆	0.8EnB嘉泰姆	12EnB嘉泰姆	5000EnB嘉泰姆
CXSD6274CEnB嘉泰姆	SOP-8EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	20EnB嘉泰姆	2.9EnB嘉泰姆	13.2EnB嘉泰姆	0.8EnB嘉泰姆	12EnB嘉泰姆	5000EnB嘉泰姆
CXSD6275EnB嘉泰姆	QFN4x4-24EnB嘉泰姆	VMEnB嘉泰姆	2EnB嘉泰姆	1EnB嘉泰姆	60EnB嘉泰姆	3.1EnB嘉泰姆	13.2EnB嘉泰姆	0.6EnB嘉泰姆	12EnB嘉泰姆	5000EnB嘉泰姆
CXSD6276EnB嘉泰姆	SOP-8EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	20EnB嘉泰姆	2.2EnB嘉泰姆	13.2EnB嘉泰姆	0.8EnB嘉泰姆	5~12EnB嘉泰姆	2100EnB嘉泰姆
CXSD6276AEnB嘉泰姆	SOP-8EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	20EnB嘉泰姆	2.2EnB嘉泰姆	13.2EnB嘉泰姆	0.8EnB嘉泰姆	5~12EnB嘉泰姆	2100EnB嘉泰姆
CXSD6277/A/BEnB嘉泰姆	SOP8\|TSSOP8EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	5EnB嘉泰姆	5EnB嘉泰姆	13.2EnB嘉泰姆	1.25\|0.8EnB嘉泰姆	5~12EnB嘉泰姆	3000EnB嘉泰姆
CXSD6278EnB嘉泰姆	SOP-8EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	10EnB嘉泰姆	3.3EnB嘉泰姆	5.5EnB嘉泰姆	0.8EnB嘉泰姆	5EnB嘉泰姆	2100EnB嘉泰姆
CXSD6279BEnB嘉泰姆	SOP-14EnB嘉泰姆	VM EnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	10EnB嘉泰姆	5EnB嘉泰姆	13.2EnB嘉泰姆	0.8EnB嘉泰姆	12EnB嘉泰姆	2000EnB嘉泰姆
CXSD6280EnB嘉泰姆	TSSOP-24EnB嘉泰姆 \|QFN5x5-32EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	2EnB嘉泰姆	20EnB嘉泰姆	5EnB嘉泰姆	13.2EnB嘉泰姆	0.6EnB嘉泰姆	5~12EnB嘉泰姆	4000EnB嘉泰姆
CXSD6281NEnB嘉泰姆	SOP14EnB嘉泰姆 QSOP16EnB嘉泰姆 QFN-16EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	30EnB嘉泰姆	2.9EnB嘉泰姆	13.2EnB嘉泰姆	0.9EnB嘉泰姆	12EnB嘉泰姆	4000EnB嘉泰姆
CXSD6282EnB嘉泰姆	SOP-14EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	30EnB嘉泰姆	2.2EnB嘉泰姆	13.2EnB嘉泰姆	0.6EnB嘉泰姆	12EnB嘉泰姆	5000EnB嘉泰姆
CXSD6282AEnB嘉泰姆	SOP-14EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	30EnB嘉泰姆	2.2EnB嘉泰姆	13.2EnB嘉泰姆	0.6EnB嘉泰姆	12EnB嘉泰姆	5000EnB嘉泰姆
CXSD6283EnB嘉泰姆	SOP-14EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	25EnB嘉泰姆	2.2EnB嘉泰姆	13.2EnB嘉泰姆	0.8EnB嘉泰姆	12EnB嘉泰姆	5000EnB嘉泰姆
CXSD6284/AEnB嘉泰姆	LQFP7x7 48EnB嘉泰姆 TQFN7x7-48EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	6EnB嘉泰姆	0.015EnB嘉泰姆	1.4EnB嘉泰姆	6.5EnB嘉泰姆	-EnB嘉泰姆	5EnB嘉泰姆	1800EnB嘉泰姆
CXSD6285EnB嘉泰姆	TSSOP-24PEnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	2EnB嘉泰姆	20EnB嘉泰姆	2.97EnB嘉泰姆	5.5EnB嘉泰姆	0.8EnB嘉泰姆	5~12EnB嘉泰姆	5000EnB嘉泰姆
CXSD6286EnB嘉泰姆	SOP-14EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	10EnB嘉泰姆	5EnB嘉泰姆	13.2EnB嘉泰姆	0.8EnB嘉泰姆	12EnB嘉泰姆	3000EnB嘉泰姆
CXSD6287EnB嘉泰姆	SOP-8-P\|DIP-8EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	1EnB嘉泰姆	30EnB嘉泰姆	2.9EnB嘉泰姆	13.2EnB嘉泰姆	1.2EnB嘉泰姆	12EnB嘉泰姆	3000EnB嘉泰姆
CXSD6288EnB嘉泰姆	SSOP28EnB嘉泰姆 QFN4x4-24EnB嘉泰姆	VMEnB嘉泰姆	1EnB嘉泰姆	2EnB嘉泰姆	20EnB嘉泰姆	5EnB嘉泰姆	24EnB嘉泰姆	0.9EnB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