CXSD62106|A 同步buck-PWM控制器来产生VDDQ源极和陷极LDO线性调节器来产生VTT DDR2和DDR3内存提供完整的电源

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发表时间：2020-04-22浏览次数：144

CXSD62106|A 同步buck-PWM控制器来产生VDDQ源极和陷极LDO线性调节器来产生VTT DDR2和DDR3内存提供完整的电源

目录Y5i嘉泰姆

1.产品概述         2.产品特点Y5i嘉泰姆
3.应用范围       4.下载产品资料PDF文档 Y5i嘉泰姆
5.产品封装图                     6.电路原理图             Y5i嘉泰姆
7.功能概述       8.相关产品Y5i嘉泰姆

一,产品概述(General Description) Y5i嘉泰姆
The CXSD62106/A integrates a synchronous buck PWM controller to generateY5i嘉泰姆
VDDQ, a sourcing and sinking LDO linear regulator to generate VTT. It providesY5i嘉泰姆
a complete power supply for DDR2 and DDR3 memory system. It offers the lowestY5i嘉泰姆
total solution cost in system where space is at a premium.Y5i嘉泰姆
The CXSD62106/A provides excellent transient response and accurate DC Y5i嘉泰姆

voltage output in either PFM or PWM Mode. In Pulse Frequency Mode (PFM), the CXSD62106/A provides very high efficiency over light to heavy loads with loading-modulated switching frequencies. On TQFN4x4- 24A package, the Forced PWM Y5i嘉泰姆

Mode works nearly at con-stant frequency for low-noise requirements.Y5i嘉泰姆
The CXSD62106/A is equipped with accurate current-limit,output under-voltage,Y5i嘉泰姆

and output over-voltage protections.A Power-On-Reset function monitors the Y5i嘉泰姆

voltage on VCC prevents wrong operation during power on.The LDO is designed Y5i嘉泰姆

to provide a regulated voltage with bi-directional output current for DDR-SDRAM termination.The device integrates two power transistors to source or sink current Y5i嘉泰姆

up to 1.5A. It also incorporates current-limit and thermal shutdown protection.Y5i嘉泰姆

The output voltage of LDO tracks the voltage at VTTREF pin. An internal resistorY5i嘉泰姆

divider is used to provide a half voltage of VDDQ for VTTREF and VTT Voltage. Y5i嘉泰姆

The VTT output voltage is only requiring 20μF of ceramic output capacitance forY5i嘉泰姆

stability and fast transient response. The S3 and S5 pins provide the sleep stateY5i嘉泰姆

for VTT (S3 state)and suspend state (S4/S5 state) for device, when S5 andY5i嘉泰姆
S3 are both pulled low the device provides the soft-off for VTT and VTTREF.Y5i嘉泰姆
The CXSD62106/A is available in 4mmx4mm 24-pin TQFN package, and the Y5i嘉泰姆

CXSD62106A is available in 3mmx3mm 20-pin TQFN package.Y5i嘉泰姆
二.产品特点(Features)Y5i嘉泰姆
Buck Controller (VDDQ)Y5i嘉泰姆
· High Input Voltages Range from 3V to 28V Input PowerY5i嘉泰姆
Provide 1.8V (DDR2), 1.5V (DDR3) or AdjustableY5i嘉泰姆
Output Voltage from 0.75V to 5.5VY5i嘉泰姆
- ±1% Accuracy Over-TemperatureY5i嘉泰姆
Integrated MOSFET Drivers and Bootstrap DiodeY5i嘉泰姆
Excellent Line and Load Transient ResponsesY5i嘉泰姆
PFM Mode for Increased Light Load EfficiencyY5i嘉泰姆
Constant-On-Time Controller SchemeY5i嘉泰姆
- Switching Frequency Compensation for PWMModeY5i嘉泰姆
- Adjustable Switching Frequency from 100kHzY5i嘉泰姆
to 550kHz in PWM Mode with DC Output CurrentY5i嘉泰姆
Integrated MOSFET Drivers and Bootstrap DiodeY5i嘉泰姆
S3 and S5 Pins Control The Device in S0, S3, or S4/S5 StateY5i嘉泰姆
Power Good MonitoringY5i嘉泰姆
70% Under-Voltage Protection (UVP)Y5i嘉泰姆
125% Over-Voltage Protection (OVP)Y5i嘉泰姆
Adjustable Current-Limit ProtectionY5i嘉泰姆
Using Sense Low-Side MOSFET RDS(ON)Y5i嘉泰姆
±1.5A LDO Section (VTT)Y5i嘉泰姆
Souring or Sinking Current up to 1.5AY5i嘉泰姆
Fast Transient Response for Output VoltageY5i嘉泰姆
Output Ceramic Capacitors Support at Least 10μF MLCCY5i嘉泰姆
VTT and VTTREF Track at Half the VDDQSNS by Internal DividerY5i嘉泰姆
±20mV Accuracy for VTT and VTTREFY5i嘉泰姆

Independent Over-Current-Limit (OCL) Y5i嘉泰姆

Thermal Shutdown ProtectionY5i嘉泰姆

QFN-24 4mmx4mm Thin Package (TQFN4x4-24A)Y5i嘉泰姆
for CXSD62106 and QFN-20 3mmx3mm ThinY5i嘉泰姆
Package (TQFN3x3-20) for CXSD62106AY5i嘉泰姆
Lead Free and Green Devices AvailableY5i嘉泰姆

三,应用范围 (Applications)Y5i嘉泰姆

DDR2, and DDR3 Memory Power SuppliesY5i嘉泰姆
SSTL-2 SSTL-18 and HSTL TerminationY5i嘉泰姆
四.下载产品资料PDF文档 Y5i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！Y5i嘉泰姆

QQ截图20160419174301.jpg Y5i嘉泰姆

五,产品封装图 (Package)Y5i嘉泰姆

Y5i嘉泰姆

六.电路原理图Y5i嘉泰姆

Y5i嘉泰姆

七,功能概述Y5i嘉泰姆

Layout Consideration (Cont.)Y5i嘉泰姆

· Keep the switching nodes (UGATE, LGATE, BOOT, and PHASE) away from sensitive small signal nodesY5i嘉泰姆
(VDDQSET, VTTREF, CS, and MODE) since these nodes are fast mov ing signals. Therefore, keep tracesY5i嘉泰姆
to these nodes as short as possible and there should be no other weak signal traces in parallel with thesesY5i嘉泰姆
traces on any layer.Y5i嘉泰姆
The signals going through theses traces have both high dv/dt and high di/dt, with high peak charging andY5i嘉泰姆
discharging current. The traces from the gate drivers to the MOSFETs (UGATE and LGATE) should be shortY5i嘉泰姆
and wide.Y5i嘉泰姆
Place the source of the high-side MOSFET and the drain of the low-side MOSFET as close as possible. Mini-Y5i嘉泰姆
mizing the impedance with wide layout plane between the two pads reduces the voltage bounce of the node.
ceramic capacitor near the drain of the high-side MOSFET as close as possible. The bulk capacitors areY5i嘉泰姆
also placednear the drain).Y5i嘉泰姆
The input capacitor should be near the drain of the up per MOSFET; the high quality ceramic decoupling ca-Y5i嘉泰姆
pacitor can be put close to the VCC and GND pins; the VTTREF decoupling capasitor should be close to theY5i嘉泰姆
VTTREF pin and GND; the VDDQ and VTT output ca-pacitors should be located right across their output pinY5i嘉泰姆
as clase as possible to the part to minimize parasitics.Y5i嘉泰姆
The input capacitor GND should be close to the output capacitor GND and the lower MOSFET GND.Y5i嘉泰姆
· The drain of the MOSFETs (VIN and PHASE nodes) should be a large plane for heat sinking. And PHASEY5i嘉泰姆
pin traces are also the return path for UGATE. Connect this pin to the converter’s upper MOSFET source.Y5i嘉泰姆
· The CXSD62106/A used ripple mode control. Build the resistor divider close to the VDDQSET pin so that theY5i嘉泰姆
high imped ance trace is shorter when the output volt-age is in ad justable mode. And the VDDQSET pinY5i嘉泰姆
traces can’t be closed to the switching signal traces (UGATE, LGATE, BOOT, and PHASE)Y5i嘉泰姆
The PGND trace should be a separate trace, and inde pendently go to the source of the low-side MOSFETsY5i嘉泰姆
for current limit accuracy.Decoupling capacitor, the resistor dividers, boot capacitors, and current limit stetting resistor should be close their pins. (For example, place the decouplingY5i嘉泰姆

八,相关产品 更多同类产品...... Y5i嘉泰姆

Switching Regulator > Buck ControllerY5i嘉泰姆
Part_No Y5i嘉泰姆	Package Y5i嘉泰姆	ArchiY5i嘉泰姆 tectuY5i嘉泰姆	PhaseY5i嘉泰姆	No.ofY5i嘉泰姆 PWMY5i嘉泰姆 OutputY5i嘉泰姆	Output Y5i嘉泰姆 CurrentY5i嘉泰姆 (A) Y5i嘉泰姆	InputY5i嘉泰姆 Voltage (V) Y5i嘉泰姆		ReferenceY5i嘉泰姆 VoltageY5i嘉泰姆 (V) Y5i嘉泰姆	Bias Y5i嘉泰姆 VoltageY5i嘉泰姆 (V) Y5i嘉泰姆	QuiescentY5i嘉泰姆 CurrentY5i嘉泰姆 (uA) Y5i嘉泰姆
Part_No Y5i嘉泰姆	Package Y5i嘉泰姆	ArchiY5i嘉泰姆 tectuY5i嘉泰姆	PhaseY5i嘉泰姆	No.ofY5i嘉泰姆 PWMY5i嘉泰姆 OutputY5i嘉泰姆	Output Y5i嘉泰姆 CurrentY5i嘉泰姆 (A) Y5i嘉泰姆	minY5i嘉泰姆	maxY5i嘉泰姆	ReferenceY5i嘉泰姆 VoltageY5i嘉泰姆 (V) Y5i嘉泰姆	Bias Y5i嘉泰姆 VoltageY5i嘉泰姆 (V) Y5i嘉泰姆	QuiescentY5i嘉泰姆 CurrentY5i嘉泰姆 (uA) Y5i嘉泰姆
CXSD6273Y5i嘉泰姆	SOP-14Y5i嘉泰姆 QSOP-16Y5i嘉泰姆 QFN4x4-16Y5i嘉泰姆	VM Y5i嘉泰姆	1 Y5i嘉泰姆	1 Y5i嘉泰姆	30Y5i嘉泰姆	2.9 Y5i嘉泰姆	13.2Y5i嘉泰姆	0.9Y5i嘉泰姆	12 Y5i嘉泰姆	8000Y5i嘉泰姆
CXSD6274Y5i嘉泰姆	SOP-8Y5i嘉泰姆	VM Y5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	20Y5i嘉泰姆	2.9 Y5i嘉泰姆	13.2 Y5i嘉泰姆	0.8Y5i嘉泰姆	12Y5i嘉泰姆	5000Y5i嘉泰姆
CXSD6274CY5i嘉泰姆	SOP-8Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	20Y5i嘉泰姆	2.9Y5i嘉泰姆	13.2Y5i嘉泰姆	0.8Y5i嘉泰姆	12Y5i嘉泰姆	5000Y5i嘉泰姆
CXSD6275Y5i嘉泰姆	QFN4x4-24Y5i嘉泰姆	VMY5i嘉泰姆	2Y5i嘉泰姆	1Y5i嘉泰姆	60Y5i嘉泰姆	3.1Y5i嘉泰姆	13.2Y5i嘉泰姆	0.6Y5i嘉泰姆	12Y5i嘉泰姆	5000Y5i嘉泰姆
CXSD6276Y5i嘉泰姆	SOP-8Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	20Y5i嘉泰姆	2.2Y5i嘉泰姆	13.2Y5i嘉泰姆	0.8Y5i嘉泰姆	5~12Y5i嘉泰姆	2100Y5i嘉泰姆
CXSD6276AY5i嘉泰姆	SOP-8Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	20Y5i嘉泰姆	2.2Y5i嘉泰姆	13.2Y5i嘉泰姆	0.8Y5i嘉泰姆	5~12Y5i嘉泰姆	2100Y5i嘉泰姆
CXSD6277/A/BY5i嘉泰姆	SOP8\|TSSOP8Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	5Y5i嘉泰姆	5Y5i嘉泰姆	13.2Y5i嘉泰姆	1.25\|0.8Y5i嘉泰姆	5~12Y5i嘉泰姆	3000Y5i嘉泰姆
CXSD6278Y5i嘉泰姆	SOP-8Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	10Y5i嘉泰姆	3.3Y5i嘉泰姆	5.5Y5i嘉泰姆	0.8Y5i嘉泰姆	5Y5i嘉泰姆	2100Y5i嘉泰姆
CXSD6279BY5i嘉泰姆	SOP-14Y5i嘉泰姆	VM Y5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	10Y5i嘉泰姆	5Y5i嘉泰姆	13.2Y5i嘉泰姆	0.8Y5i嘉泰姆	12Y5i嘉泰姆	2000Y5i嘉泰姆
CXSD6280Y5i嘉泰姆	TSSOP-24Y5i嘉泰姆 \|QFN5x5-32Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	2Y5i嘉泰姆	20Y5i嘉泰姆	5Y5i嘉泰姆	13.2Y5i嘉泰姆	0.6Y5i嘉泰姆	5~12Y5i嘉泰姆	4000Y5i嘉泰姆
CXSD6281NY5i嘉泰姆	SOP14Y5i嘉泰姆 QSOP16Y5i嘉泰姆 QFN-16Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	30Y5i嘉泰姆	2.9Y5i嘉泰姆	13.2Y5i嘉泰姆	0.9Y5i嘉泰姆	12Y5i嘉泰姆	4000Y5i嘉泰姆
CXSD6282Y5i嘉泰姆	SOP-14Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	30Y5i嘉泰姆	2.2Y5i嘉泰姆	13.2Y5i嘉泰姆	0.6Y5i嘉泰姆	12Y5i嘉泰姆	5000Y5i嘉泰姆
CXSD6282AY5i嘉泰姆	SOP-14Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	30Y5i嘉泰姆	2.2Y5i嘉泰姆	13.2Y5i嘉泰姆	0.6Y5i嘉泰姆	12Y5i嘉泰姆	5000Y5i嘉泰姆
CXSD6283Y5i嘉泰姆	SOP-14Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	25Y5i嘉泰姆	2.2Y5i嘉泰姆	13.2Y5i嘉泰姆	0.8Y5i嘉泰姆	12Y5i嘉泰姆	5000Y5i嘉泰姆
CXSD6284/AY5i嘉泰姆	LQFP7x7 48Y5i嘉泰姆 TQFN7x7-48Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	6Y5i嘉泰姆	0.015Y5i嘉泰姆	1.4Y5i嘉泰姆	6.5Y5i嘉泰姆	-Y5i嘉泰姆	5Y5i嘉泰姆	1800Y5i嘉泰姆
CXSD6285Y5i嘉泰姆	TSSOP-24PY5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	2Y5i嘉泰姆	20Y5i嘉泰姆	2.97Y5i嘉泰姆	5.5Y5i嘉泰姆	0.8Y5i嘉泰姆	5~12Y5i嘉泰姆	5000Y5i嘉泰姆
CXSD6286Y5i嘉泰姆	SOP-14Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	10Y5i嘉泰姆	5Y5i嘉泰姆	13.2Y5i嘉泰姆	0.8Y5i嘉泰姆	12Y5i嘉泰姆	3000Y5i嘉泰姆
CXSD6287Y5i嘉泰姆	SOP-8-P\|DIP-8Y5i嘉泰姆	VMY5i嘉泰姆	1Y5i嘉泰姆	1Y5i嘉泰姆	30Y5i嘉泰姆	2.9Y5i嘉泰姆	13.2Y5i嘉泰姆	1.2Y5i嘉泰姆	12Y5i嘉泰姆	3000Y5i嘉泰姆
CXSD6288Y5i嘉泰姆	SSOP28Y5i嘉泰姆 QFN4x4-24Y5i嘉泰姆

上一篇：电荷泵CXSD62105笔记本电脑的系统电源脉宽调制控制器集成了双降压恒时同步的脉宽调制控制器

下一篇：高性能笔记本电脑PWM控制器CXSD62107单相定时同步的PWM控制器它驱动N通道mosfet

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