CXSD62108单相恒定时间同步的脉宽调制控制器驱动N通道mosfet笔记本电脑中产生低压芯片组RAM电源的电压

发表时间：2020-04-23浏览次数：6

目录lpZ嘉泰姆

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

一,产品概述(General Description) lpZ嘉泰姆
The CXSD62108 is a single-phase, constant-on-time,synchronous PWMlpZ嘉泰姆
controller, which drives N-channel MOSFETs. The CXSD62108 steps down highlpZ嘉泰姆
voltage to generate low-voltage chipset or RAM supplies in notebook computers.lpZ嘉泰姆
The CXSD62108 provides excellent transient response and accurate DClpZ嘉泰姆
voltage output in either PFM or PWM Mode.In Pulse Frequency Mode (PFM),lpZ嘉泰姆
the CXSD62108 provides very high efficiency over light to heavy loads with lpZ嘉泰姆

loading-modulated switching frequencies. In PWM Mode, the converter workslpZ嘉泰姆

nearly at constant frequency for low-noise requirements.lpZ嘉泰姆
The CXSD62108 is equipped with accurate positive current-limit, outputlpZ嘉泰姆
under-voltage, and output over-voltage protections, perfect for NB applications.lpZ嘉泰姆
The Power-On-Reset function monitors the voltage on VCC and PVCC tolpZ嘉泰姆
prevent wrong operation during power-on. The CXSD62108 has a 1.2ms digitallpZ嘉泰姆
soft-start and built-in an integrated output discharge device for soft-stop. An lpZ嘉泰姆

internal integrated soft-start ramps up the output voltage with programmable lpZ嘉泰姆

slew rate to reduce the start-up current. A soft-stop function actively lpZ嘉泰姆

discharges the output capacitors.lpZ嘉泰姆
The CXSD62108 is available in 14pin TSSOP, 14pin QFN and 16pin TQFNlpZ嘉泰姆
packages respectively.lpZ嘉泰姆
二.产品特点(Features)lpZ嘉泰姆
Adjustable Output Voltage from +0.75V to +5.5VlpZ嘉泰姆
- 0.75V Reference VoltagelpZ嘉泰姆
- ±1% Accuracy Over-TemperaturelpZ嘉泰姆
Operates from An Input Battery Voltage Range oflpZ嘉泰姆
+1.8V to +28VlpZ嘉泰姆
Power-On-Reset Monitoring on VCC Pin and PVCC PinlpZ嘉泰姆
Excellent Line and Load Transient ResponseslpZ嘉泰姆
PFM Mode for Increased Light Load EfficiencylpZ嘉泰姆
Programmable PWM Frequency from 100kHz to 500kHzlpZ嘉泰姆
Integrated MOSFET DriverslpZ嘉泰姆
Integrated Bootstrap Forward P-CH MOSFETlpZ嘉泰姆
Adjustable Integrated Soft-Start and Soft-StoplpZ嘉泰姆
Selectable Forced PWM or Automatic PFM/PWM ModelpZ嘉泰姆
Power Good MonitoringlpZ嘉泰姆
70% Under-Voltage ProtectionlpZ嘉泰姆
125% Over-Voltage ProtectionlpZ嘉泰姆
Adjustable Current-Limit ProtectionlpZ嘉泰姆
- Using Sense Low-Side MOSFET’s RDS(ON)lpZ嘉泰姆
Over-Temperature ProtectionlpZ嘉泰姆
TSSOP-14, QFN3.5x3.5-14, and TQFN3x3-16 PackageslpZ嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)lpZ嘉泰姆
三,应用范围 (Applications)lpZ嘉泰姆
NotebooklpZ嘉泰姆
Table PClpZ嘉泰姆
Hand-Held PortablelpZ嘉泰姆
AIO PClpZ嘉泰姆
四.下载产品资料PDF文档 lpZ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！lpZ嘉泰姆

QQ截图20160419174301.jpg lpZ嘉泰姆

五,产品封装图 (Package)lpZ嘉泰姆

lpZ嘉泰姆

六.电路原理图lpZ嘉泰姆

lpZ嘉泰姆
七,功能概述lpZ嘉泰姆

Layout Consideration (Cont.)lpZ嘉泰姆
· The signals going through theses traces have both high dv/dt and high di/dt with high peak charging and dis-lpZ嘉泰姆
charging current. The traces from the gate drivers to the MOSFETs (UGATE and LGATE) should be short and wide.lpZ嘉泰姆
· Place the source of the high-side MOSFET and the drain of the low-side MOSFET as close as possible. Minimiz-lpZ嘉泰姆
ing the impedance with wide layout plane between the two pads reduces the voltage bounce of the node. InlpZ嘉泰姆
addition, the large layout plane between the drain of the MOSFETs (VIN and PHASE nodes) can get better heatlpZ嘉泰姆
sinking.lpZ嘉泰姆
· The PGND is the current sensing circuit reference ground and also the power ground of the LGATE low-lpZ嘉泰姆
side MOSFET. On the hand, the PGND trace should be a separate trace and independently go to the source of thelpZ嘉泰姆
low-side MOSFET. Besides, the current sense resistor should be close to OCSET pin to avoid parasitic capaci-lpZ嘉泰姆
tor effect and noise coupling.lpZ嘉泰姆
· Decoupling capacitors, the resistor-divider, and boot capacitor should be close to their pins. (For example, placelpZ嘉泰姆
the decoupling ceramic capacitor close to the drain of the high-side MOSFET as close as possible.)lpZ嘉泰姆
· The input bulk capacitors should be close to the drain of the high-side MOSFET, and the output bulk capacitorslpZ嘉泰姆
should be close to the loads. The input capacitor’s ground should be close to the grounds of the output capacitorslpZ嘉泰姆
and low-side MOSFET.lpZ嘉泰姆
· Locate the resistor-divider close to the FB pin to mini-mize the high impedance trace. In addition, FB pin traceslpZ嘉泰姆
can’t be close to the switching signal traces (UGATE, LGATE, BOOT, and PHASE).lpZ嘉泰姆
八,相关产品 更多同类产品...... lpZ嘉泰姆

Switching Regulator > Buck ControllerlpZ嘉泰姆
Part_No lpZ嘉泰姆	Package lpZ嘉泰姆	ArchilpZ嘉泰姆 tectulpZ嘉泰姆	PhaselpZ嘉泰姆	No.oflpZ嘉泰姆 PWMlpZ嘉泰姆 OutputlpZ嘉泰姆	Output lpZ嘉泰姆 CurrentlpZ嘉泰姆 (A) lpZ嘉泰姆	InputlpZ嘉泰姆 Voltage (V) lpZ嘉泰姆		ReferencelpZ嘉泰姆 VoltagelpZ嘉泰姆 (V) lpZ嘉泰姆	Bias lpZ嘉泰姆 VoltagelpZ嘉泰姆 (V) lpZ嘉泰姆	QuiescentlpZ嘉泰姆 CurrentlpZ嘉泰姆 (uA) lpZ嘉泰姆
Part_No lpZ嘉泰姆	Package lpZ嘉泰姆	ArchilpZ嘉泰姆 tectulpZ嘉泰姆	PhaselpZ嘉泰姆	No.oflpZ嘉泰姆 PWMlpZ嘉泰姆 OutputlpZ嘉泰姆	Output lpZ嘉泰姆 CurrentlpZ嘉泰姆 (A) lpZ嘉泰姆	minlpZ嘉泰姆	maxlpZ嘉泰姆	ReferencelpZ嘉泰姆 VoltagelpZ嘉泰姆 (V) lpZ嘉泰姆	Bias lpZ嘉泰姆 VoltagelpZ嘉泰姆 (V) lpZ嘉泰姆	QuiescentlpZ嘉泰姆 CurrentlpZ嘉泰姆 (uA) lpZ嘉泰姆
CXSD6273lpZ嘉泰姆	SOP-14lpZ嘉泰姆 QSOP-16lpZ嘉泰姆 QFN4x4-16lpZ嘉泰姆	VM lpZ嘉泰姆	1 lpZ嘉泰姆	1 lpZ嘉泰姆	30lpZ嘉泰姆	2.9 lpZ嘉泰姆	13.2lpZ嘉泰姆	0.9lpZ嘉泰姆	12 lpZ嘉泰姆	8000lpZ嘉泰姆
CXSD6274lpZ嘉泰姆	SOP-8lpZ嘉泰姆	VM lpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	20lpZ嘉泰姆	2.9 lpZ嘉泰姆	13.2 lpZ嘉泰姆	0.8lpZ嘉泰姆	12lpZ嘉泰姆	5000lpZ嘉泰姆
CXSD6274ClpZ嘉泰姆	SOP-8lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	20lpZ嘉泰姆	2.9lpZ嘉泰姆	13.2lpZ嘉泰姆	0.8lpZ嘉泰姆	12lpZ嘉泰姆	5000lpZ嘉泰姆
CXSD6275lpZ嘉泰姆	QFN4x4-24lpZ嘉泰姆	VMlpZ嘉泰姆	2lpZ嘉泰姆	1lpZ嘉泰姆	60lpZ嘉泰姆	3.1lpZ嘉泰姆	13.2lpZ嘉泰姆	0.6lpZ嘉泰姆	12lpZ嘉泰姆	5000lpZ嘉泰姆
CXSD6276lpZ嘉泰姆	SOP-8lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	20lpZ嘉泰姆	2.2lpZ嘉泰姆	13.2lpZ嘉泰姆	0.8lpZ嘉泰姆	5~12lpZ嘉泰姆	2100lpZ嘉泰姆
CXSD6276AlpZ嘉泰姆	SOP-8lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	20lpZ嘉泰姆	2.2lpZ嘉泰姆	13.2lpZ嘉泰姆	0.8lpZ嘉泰姆	5~12lpZ嘉泰姆	2100lpZ嘉泰姆
CXSD6277/A/BlpZ嘉泰姆	SOP8\|TSSOP8lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	5lpZ嘉泰姆	5lpZ嘉泰姆	13.2lpZ嘉泰姆	1.25\|0.8lpZ嘉泰姆	5~12lpZ嘉泰姆	3000lpZ嘉泰姆
CXSD6278lpZ嘉泰姆	SOP-8lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	10lpZ嘉泰姆	3.3lpZ嘉泰姆	5.5lpZ嘉泰姆	0.8lpZ嘉泰姆	5lpZ嘉泰姆	2100lpZ嘉泰姆
CXSD6279BlpZ嘉泰姆	SOP-14lpZ嘉泰姆	VM lpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	10lpZ嘉泰姆	5lpZ嘉泰姆	13.2lpZ嘉泰姆	0.8lpZ嘉泰姆	12lpZ嘉泰姆	2000lpZ嘉泰姆
CXSD6280lpZ嘉泰姆	TSSOP-24lpZ嘉泰姆 \|QFN5x5-32lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	2lpZ嘉泰姆	20lpZ嘉泰姆	5lpZ嘉泰姆	13.2lpZ嘉泰姆	0.6lpZ嘉泰姆	5~12lpZ嘉泰姆	4000lpZ嘉泰姆
CXSD6281NlpZ嘉泰姆	SOP14lpZ嘉泰姆 QSOP16lpZ嘉泰姆 QFN-16lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	30lpZ嘉泰姆	2.9lpZ嘉泰姆	13.2lpZ嘉泰姆	0.9lpZ嘉泰姆	12lpZ嘉泰姆	4000lpZ嘉泰姆
CXSD6282lpZ嘉泰姆	SOP-14lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	30lpZ嘉泰姆	2.2lpZ嘉泰姆	13.2lpZ嘉泰姆	0.6lpZ嘉泰姆	12lpZ嘉泰姆	5000lpZ嘉泰姆
CXSD6282AlpZ嘉泰姆	SOP-14lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	30lpZ嘉泰姆	2.2lpZ嘉泰姆	13.2lpZ嘉泰姆	0.6lpZ嘉泰姆	12lpZ嘉泰姆	5000lpZ嘉泰姆
CXSD6283lpZ嘉泰姆	SOP-14lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	25lpZ嘉泰姆	2.2lpZ嘉泰姆	13.2lpZ嘉泰姆	0.8lpZ嘉泰姆	12lpZ嘉泰姆	5000lpZ嘉泰姆
CXSD6284/AlpZ嘉泰姆	LQFP7x7 48lpZ嘉泰姆 TQFN7x7-48lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	6lpZ嘉泰姆	0.015lpZ嘉泰姆	1.4lpZ嘉泰姆	6.5lpZ嘉泰姆	-lpZ嘉泰姆	5lpZ嘉泰姆	1800lpZ嘉泰姆
CXSD6285lpZ嘉泰姆	TSSOP-24PlpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	2lpZ嘉泰姆	20lpZ嘉泰姆	2.97lpZ嘉泰姆	5.5lpZ嘉泰姆	0.8lpZ嘉泰姆	5~12lpZ嘉泰姆	5000lpZ嘉泰姆
CXSD6286lpZ嘉泰姆	SOP-14lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	10lpZ嘉泰姆	5lpZ嘉泰姆	13.2lpZ嘉泰姆	0.8lpZ嘉泰姆	12lpZ嘉泰姆	3000lpZ嘉泰姆
CXSD6287lpZ嘉泰姆	SOP-8-P\|DIP-8lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	1lpZ嘉泰姆	30lpZ嘉泰姆	2.9lpZ嘉泰姆	13.2lpZ嘉泰姆	1.2lpZ嘉泰姆	12lpZ嘉泰姆	3000lpZ嘉泰姆
CXSD6288lpZ嘉泰姆	SSOP28lpZ嘉泰姆 QFN4x4-24lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	2lpZ嘉泰姆	20lpZ嘉泰姆	5lpZ嘉泰姆	24lpZ嘉泰姆	0.9lpZ嘉泰姆	5lpZ嘉泰姆	1200lpZ嘉泰姆
CXSD6289lpZ嘉泰姆	SOP-20lpZ嘉泰姆	VMlpZ嘉泰姆	1lpZ嘉泰姆	2lpZ嘉泰姆	20lpZ嘉泰姆	2.2lpZ嘉泰姆	13.2lpZ嘉泰姆	0.6lpZ嘉泰姆	5~12lpZ嘉泰姆	4000lpZ嘉泰姆
CXSD629lpZ嘉泰姆

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