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：169

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Rkw嘉泰姆

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

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

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

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

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

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

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

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

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

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

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

CXSD62106A is available in 3mmx3mm 20-pin TQFN package.Rkw嘉泰姆
二.产品特点(Features)Rkw嘉泰姆
Buck Controller (VDDQ)Rkw嘉泰姆
· High Input Voltages Range from 3V to 28V Input PowerRkw嘉泰姆
Provide 1.8V (DDR2), 1.5V (DDR3) or AdjustableRkw嘉泰姆
Output Voltage from 0.75V to 5.5VRkw嘉泰姆
- ±1% Accuracy Over-TemperatureRkw嘉泰姆
Integrated MOSFET Drivers and Bootstrap DiodeRkw嘉泰姆
Excellent Line and Load Transient ResponsesRkw嘉泰姆
PFM Mode for Increased Light Load EfficiencyRkw嘉泰姆
Constant-On-Time Controller SchemeRkw嘉泰姆
- Switching Frequency Compensation for PWMModeRkw嘉泰姆
- Adjustable Switching Frequency from 100kHzRkw嘉泰姆
to 550kHz in PWM Mode with DC Output CurrentRkw嘉泰姆
Integrated MOSFET Drivers and Bootstrap DiodeRkw嘉泰姆
S3 and S5 Pins Control The Device in S0, S3, or S4/S5 StateRkw嘉泰姆
Power Good MonitoringRkw嘉泰姆
70% Under-Voltage Protection (UVP)Rkw嘉泰姆
125% Over-Voltage Protection (OVP)Rkw嘉泰姆
Adjustable Current-Limit ProtectionRkw嘉泰姆
Using Sense Low-Side MOSFET RDS(ON)Rkw嘉泰姆
±1.5A LDO Section (VTT)Rkw嘉泰姆
Souring or Sinking Current up to 1.5ARkw嘉泰姆
Fast Transient Response for Output VoltageRkw嘉泰姆
Output Ceramic Capacitors Support at Least 10μF MLCCRkw嘉泰姆
VTT and VTTREF Track at Half the VDDQSNS by Internal DividerRkw嘉泰姆
±20mV Accuracy for VTT and VTTREFRkw嘉泰姆

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

Thermal Shutdown ProtectionRkw嘉泰姆

QFN-24 4mmx4mm Thin Package (TQFN4x4-24A)Rkw嘉泰姆
for CXSD62106 and QFN-20 3mmx3mm ThinRkw嘉泰姆
Package (TQFN3x3-20) for CXSD62106ARkw嘉泰姆
Lead Free and Green Devices AvailableRkw嘉泰姆

三,应用范围 (Applications)Rkw嘉泰姆

DDR2, and DDR3 Memory Power SuppliesRkw嘉泰姆
SSTL-2 SSTL-18 and HSTL TerminationRkw嘉泰姆
四.下载产品资料PDF文档 Rkw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！Rkw嘉泰姆

QQ截图20160419174301.jpg Rkw嘉泰姆

五,产品封装图 (Package)Rkw嘉泰姆

Rkw嘉泰姆

六.电路原理图Rkw嘉泰姆

Rkw嘉泰姆

七,功能概述Rkw嘉泰姆

Layout Consideration (Cont.)Rkw嘉泰姆

· Keep the switching nodes (UGATE, LGATE, BOOT, and PHASE) away from sensitive small signal nodesRkw嘉泰姆
(VDDQSET, VTTREF, CS, and MODE) since these nodes are fast mov ing signals. Therefore, keep tracesRkw嘉泰姆
to these nodes as short as possible and there should be no other weak signal traces in parallel with thesesRkw嘉泰姆
traces on any layer.Rkw嘉泰姆
The signals going through theses traces have both high dv/dt and high di/dt, with high peak charging andRkw嘉泰姆
discharging current. The traces from the gate drivers to the MOSFETs (UGATE and LGATE) should be shortRkw嘉泰姆
and wide.Rkw嘉泰姆
Place the source of the high-side MOSFET and the drain of the low-side MOSFET as close as possible. Mini-Rkw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 areRkw嘉泰姆
also placednear the drain).Rkw嘉泰姆
The input capacitor should be near the drain of the up per MOSFET; the high quality ceramic decoupling ca-Rkw嘉泰姆
pacitor can be put close to the VCC and GND pins; the VTTREF decoupling capasitor should be close to theRkw嘉泰姆
VTTREF pin and GND; the VDDQ and VTT output ca-pacitors should be located right across their output pinRkw嘉泰姆
as clase as possible to the part to minimize parasitics.Rkw嘉泰姆
The input capacitor GND should be close to the output capacitor GND and the lower MOSFET GND.Rkw嘉泰姆
· The drain of the MOSFETs (VIN and PHASE nodes) should be a large plane for heat sinking. And PHASERkw嘉泰姆
pin traces are also the return path for UGATE. Connect this pin to the converter’s upper MOSFET source.Rkw嘉泰姆
· The CXSD62106/A used ripple mode control. Build the resistor divider close to the VDDQSET pin so that theRkw嘉泰姆
high imped ance trace is shorter when the output volt-age is in ad justable mode. And the VDDQSET pinRkw嘉泰姆
traces can’t be closed to the switching signal traces (UGATE, LGATE, BOOT, and PHASE)Rkw嘉泰姆
The PGND trace should be a separate trace, and inde pendently go to the source of the low-side MOSFETsRkw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 decouplingRkw嘉泰姆

八,相关产品 更多同类产品...... Rkw嘉泰姆

Switching Regulator > Buck ControllerRkw嘉泰姆
Part_No Rkw嘉泰姆	Package Rkw嘉泰姆	ArchiRkw嘉泰姆 tectuRkw嘉泰姆	PhaseRkw嘉泰姆	No.ofRkw嘉泰姆 PWMRkw嘉泰姆 OutputRkw嘉泰姆	Output Rkw嘉泰姆 CurrentRkw嘉泰姆 (A) Rkw嘉泰姆	InputRkw嘉泰姆 Voltage (V) Rkw嘉泰姆		ReferenceRkw嘉泰姆 VoltageRkw嘉泰姆 (V) Rkw嘉泰姆	Bias Rkw嘉泰姆 VoltageRkw嘉泰姆 (V) Rkw嘉泰姆	QuiescentRkw嘉泰姆 CurrentRkw嘉泰姆 (uA) Rkw嘉泰姆
Part_No Rkw嘉泰姆	Package Rkw嘉泰姆	ArchiRkw嘉泰姆 tectuRkw嘉泰姆	PhaseRkw嘉泰姆	No.ofRkw嘉泰姆 PWMRkw嘉泰姆 OutputRkw嘉泰姆	Output Rkw嘉泰姆 CurrentRkw嘉泰姆 (A) Rkw嘉泰姆	minRkw嘉泰姆	maxRkw嘉泰姆	ReferenceRkw嘉泰姆 VoltageRkw嘉泰姆 (V) Rkw嘉泰姆	Bias Rkw嘉泰姆 VoltageRkw嘉泰姆 (V) Rkw嘉泰姆	QuiescentRkw嘉泰姆 CurrentRkw嘉泰姆 (uA) Rkw嘉泰姆
CXSD6273Rkw嘉泰姆	SOP-14Rkw嘉泰姆 QSOP-16Rkw嘉泰姆 QFN4x4-16Rkw嘉泰姆	VM Rkw嘉泰姆	1 Rkw嘉泰姆	1 Rkw嘉泰姆	30Rkw嘉泰姆	2.9 Rkw嘉泰姆	13.2Rkw嘉泰姆	0.9Rkw嘉泰姆	12 Rkw嘉泰姆	8000Rkw嘉泰姆
CXSD6274Rkw嘉泰姆	SOP-8Rkw嘉泰姆	VM Rkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	20Rkw嘉泰姆	2.9 Rkw嘉泰姆	13.2 Rkw嘉泰姆	0.8Rkw嘉泰姆	12Rkw嘉泰姆	5000Rkw嘉泰姆
CXSD6274CRkw嘉泰姆	SOP-8Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	20Rkw嘉泰姆	2.9Rkw嘉泰姆	13.2Rkw嘉泰姆	0.8Rkw嘉泰姆	12Rkw嘉泰姆	5000Rkw嘉泰姆
CXSD6275Rkw嘉泰姆	QFN4x4-24Rkw嘉泰姆	VMRkw嘉泰姆	2Rkw嘉泰姆	1Rkw嘉泰姆	60Rkw嘉泰姆	3.1Rkw嘉泰姆	13.2Rkw嘉泰姆	0.6Rkw嘉泰姆	12Rkw嘉泰姆	5000Rkw嘉泰姆
CXSD6276Rkw嘉泰姆	SOP-8Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	20Rkw嘉泰姆	2.2Rkw嘉泰姆	13.2Rkw嘉泰姆	0.8Rkw嘉泰姆	5~12Rkw嘉泰姆	2100Rkw嘉泰姆
CXSD6276ARkw嘉泰姆	SOP-8Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	20Rkw嘉泰姆	2.2Rkw嘉泰姆	13.2Rkw嘉泰姆	0.8Rkw嘉泰姆	5~12Rkw嘉泰姆	2100Rkw嘉泰姆
CXSD6277/A/BRkw嘉泰姆	SOP8\|TSSOP8Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	5Rkw嘉泰姆	5Rkw嘉泰姆	13.2Rkw嘉泰姆	1.25\|0.8Rkw嘉泰姆	5~12Rkw嘉泰姆	3000Rkw嘉泰姆
CXSD6278Rkw嘉泰姆	SOP-8Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	10Rkw嘉泰姆	3.3Rkw嘉泰姆	5.5Rkw嘉泰姆	0.8Rkw嘉泰姆	5Rkw嘉泰姆	2100Rkw嘉泰姆
CXSD6279BRkw嘉泰姆	SOP-14Rkw嘉泰姆	VM Rkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	10Rkw嘉泰姆	5Rkw嘉泰姆	13.2Rkw嘉泰姆	0.8Rkw嘉泰姆	12Rkw嘉泰姆	2000Rkw嘉泰姆
CXSD6280Rkw嘉泰姆	TSSOP-24Rkw嘉泰姆 \|QFN5x5-32Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	2Rkw嘉泰姆	20Rkw嘉泰姆	5Rkw嘉泰姆	13.2Rkw嘉泰姆	0.6Rkw嘉泰姆	5~12Rkw嘉泰姆	4000Rkw嘉泰姆
CXSD6281NRkw嘉泰姆	SOP14Rkw嘉泰姆 QSOP16Rkw嘉泰姆 QFN-16Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	30Rkw嘉泰姆	2.9Rkw嘉泰姆	13.2Rkw嘉泰姆	0.9Rkw嘉泰姆	12Rkw嘉泰姆	4000Rkw嘉泰姆
CXSD6282Rkw嘉泰姆	SOP-14Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	30Rkw嘉泰姆	2.2Rkw嘉泰姆	13.2Rkw嘉泰姆	0.6Rkw嘉泰姆	12Rkw嘉泰姆	5000Rkw嘉泰姆
CXSD6282ARkw嘉泰姆	SOP-14Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	30Rkw嘉泰姆	2.2Rkw嘉泰姆	13.2Rkw嘉泰姆	0.6Rkw嘉泰姆	12Rkw嘉泰姆	5000Rkw嘉泰姆
CXSD6283Rkw嘉泰姆	SOP-14Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	25Rkw嘉泰姆	2.2Rkw嘉泰姆	13.2Rkw嘉泰姆	0.8Rkw嘉泰姆	12Rkw嘉泰姆	5000Rkw嘉泰姆
CXSD6284/ARkw嘉泰姆	LQFP7x7 48Rkw嘉泰姆 TQFN7x7-48Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	6Rkw嘉泰姆	0.015Rkw嘉泰姆	1.4Rkw嘉泰姆	6.5Rkw嘉泰姆	-Rkw嘉泰姆	5Rkw嘉泰姆	1800Rkw嘉泰姆
CXSD6285Rkw嘉泰姆	TSSOP-24PRkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	2Rkw嘉泰姆	20Rkw嘉泰姆	2.97Rkw嘉泰姆	5.5Rkw嘉泰姆	0.8Rkw嘉泰姆	5~12Rkw嘉泰姆	5000Rkw嘉泰姆
CXSD6286Rkw嘉泰姆	SOP-14Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	10Rkw嘉泰姆	5Rkw嘉泰姆	13.2Rkw嘉泰姆	0.8Rkw嘉泰姆	12Rkw嘉泰姆	3000Rkw嘉泰姆
CXSD6287Rkw嘉泰姆	SOP-8-P\|DIP-8Rkw嘉泰姆	VMRkw嘉泰姆	1Rkw嘉泰姆	1Rkw嘉泰姆	30Rkw嘉泰姆	2.9Rkw嘉泰姆	13.2Rkw嘉泰姆	1.2Rkw嘉泰姆	12Rkw嘉泰姆	3000Rkw嘉泰姆
CXSD6288Rkw嘉泰姆	SSOP28Rkw嘉泰姆 QFN4x4-24Rkw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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