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：185

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qVP嘉泰姆

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

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

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

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

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

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

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

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

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

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

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

CXSD62106A is available in 3mmx3mm 20-pin TQFN package.qVP嘉泰姆
二.产品特点(Features)qVP嘉泰姆
Buck Controller (VDDQ)qVP嘉泰姆
· High Input Voltages Range from 3V to 28V Input PowerqVP嘉泰姆
Provide 1.8V (DDR2), 1.5V (DDR3) or AdjustableqVP嘉泰姆
Output Voltage from 0.75V to 5.5VqVP嘉泰姆
- ±1% Accuracy Over-TemperatureqVP嘉泰姆
Integrated MOSFET Drivers and Bootstrap DiodeqVP嘉泰姆
Excellent Line and Load Transient ResponsesqVP嘉泰姆
PFM Mode for Increased Light Load EfficiencyqVP嘉泰姆
Constant-On-Time Controller SchemeqVP嘉泰姆
- Switching Frequency Compensation for PWMModeqVP嘉泰姆
- Adjustable Switching Frequency from 100kHzqVP嘉泰姆
to 550kHz in PWM Mode with DC Output CurrentqVP嘉泰姆
Integrated MOSFET Drivers and Bootstrap DiodeqVP嘉泰姆
S3 and S5 Pins Control The Device in S0, S3, or S4/S5 StateqVP嘉泰姆
Power Good MonitoringqVP嘉泰姆
70% Under-Voltage Protection (UVP)qVP嘉泰姆
125% Over-Voltage Protection (OVP)qVP嘉泰姆
Adjustable Current-Limit ProtectionqVP嘉泰姆
Using Sense Low-Side MOSFET RDS(ON)qVP嘉泰姆
±1.5A LDO Section (VTT)qVP嘉泰姆
Souring or Sinking Current up to 1.5AqVP嘉泰姆
Fast Transient Response for Output VoltageqVP嘉泰姆
Output Ceramic Capacitors Support at Least 10μF MLCCqVP嘉泰姆
VTT and VTTREF Track at Half the VDDQSNS by Internal DividerqVP嘉泰姆
±20mV Accuracy for VTT and VTTREFqVP嘉泰姆

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

Thermal Shutdown ProtectionqVP嘉泰姆

QFN-24 4mmx4mm Thin Package (TQFN4x4-24A)qVP嘉泰姆
for CXSD62106 and QFN-20 3mmx3mm ThinqVP嘉泰姆
Package (TQFN3x3-20) for CXSD62106AqVP嘉泰姆
Lead Free and Green Devices AvailableqVP嘉泰姆

三,应用范围 (Applications)qVP嘉泰姆

DDR2, and DDR3 Memory Power SuppliesqVP嘉泰姆
SSTL-2 SSTL-18 and HSTL TerminationqVP嘉泰姆
四.下载产品资料PDF文档 qVP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！qVP嘉泰姆

QQ截图20160419174301.jpg qVP嘉泰姆

五,产品封装图 (Package)qVP嘉泰姆

qVP嘉泰姆

六.电路原理图qVP嘉泰姆

qVP嘉泰姆

七,功能概述qVP嘉泰姆

Layout Consideration (Cont.)qVP嘉泰姆

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

八,相关产品 更多同类产品...... qVP嘉泰姆

Switching Regulator > Buck ControllerqVP嘉泰姆
Part_No qVP嘉泰姆	Package qVP嘉泰姆	ArchiqVP嘉泰姆 tectuqVP嘉泰姆	PhaseqVP嘉泰姆	No.ofqVP嘉泰姆 PWMqVP嘉泰姆 OutputqVP嘉泰姆	Output qVP嘉泰姆 CurrentqVP嘉泰姆 (A) qVP嘉泰姆	InputqVP嘉泰姆 Voltage (V) qVP嘉泰姆		ReferenceqVP嘉泰姆 VoltageqVP嘉泰姆 (V) qVP嘉泰姆	Bias qVP嘉泰姆 VoltageqVP嘉泰姆 (V) qVP嘉泰姆	QuiescentqVP嘉泰姆 CurrentqVP嘉泰姆 (uA) qVP嘉泰姆
Part_No qVP嘉泰姆	Package qVP嘉泰姆	ArchiqVP嘉泰姆 tectuqVP嘉泰姆	PhaseqVP嘉泰姆	No.ofqVP嘉泰姆 PWMqVP嘉泰姆 OutputqVP嘉泰姆	Output qVP嘉泰姆 CurrentqVP嘉泰姆 (A) qVP嘉泰姆	minqVP嘉泰姆	maxqVP嘉泰姆	ReferenceqVP嘉泰姆 VoltageqVP嘉泰姆 (V) qVP嘉泰姆	Bias qVP嘉泰姆 VoltageqVP嘉泰姆 (V) qVP嘉泰姆	QuiescentqVP嘉泰姆 CurrentqVP嘉泰姆 (uA) qVP嘉泰姆
CXSD6273qVP嘉泰姆	SOP-14qVP嘉泰姆 QSOP-16qVP嘉泰姆 QFN4x4-16qVP嘉泰姆	VM qVP嘉泰姆	1 qVP嘉泰姆	1 qVP嘉泰姆	30qVP嘉泰姆	2.9 qVP嘉泰姆	13.2qVP嘉泰姆	0.9qVP嘉泰姆	12 qVP嘉泰姆	8000qVP嘉泰姆
CXSD6274qVP嘉泰姆	SOP-8qVP嘉泰姆	VM qVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	20qVP嘉泰姆	2.9 qVP嘉泰姆	13.2 qVP嘉泰姆	0.8qVP嘉泰姆	12qVP嘉泰姆	5000qVP嘉泰姆
CXSD6274CqVP嘉泰姆	SOP-8qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	20qVP嘉泰姆	2.9qVP嘉泰姆	13.2qVP嘉泰姆	0.8qVP嘉泰姆	12qVP嘉泰姆	5000qVP嘉泰姆
CXSD6275qVP嘉泰姆	QFN4x4-24qVP嘉泰姆	VMqVP嘉泰姆	2qVP嘉泰姆	1qVP嘉泰姆	60qVP嘉泰姆	3.1qVP嘉泰姆	13.2qVP嘉泰姆	0.6qVP嘉泰姆	12qVP嘉泰姆	5000qVP嘉泰姆
CXSD6276qVP嘉泰姆	SOP-8qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	20qVP嘉泰姆	2.2qVP嘉泰姆	13.2qVP嘉泰姆	0.8qVP嘉泰姆	5~12qVP嘉泰姆	2100qVP嘉泰姆
CXSD6276AqVP嘉泰姆	SOP-8qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	20qVP嘉泰姆	2.2qVP嘉泰姆	13.2qVP嘉泰姆	0.8qVP嘉泰姆	5~12qVP嘉泰姆	2100qVP嘉泰姆
CXSD6277/A/BqVP嘉泰姆	SOP8\|TSSOP8qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	5qVP嘉泰姆	5qVP嘉泰姆	13.2qVP嘉泰姆	1.25\|0.8qVP嘉泰姆	5~12qVP嘉泰姆	3000qVP嘉泰姆
CXSD6278qVP嘉泰姆	SOP-8qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	10qVP嘉泰姆	3.3qVP嘉泰姆	5.5qVP嘉泰姆	0.8qVP嘉泰姆	5qVP嘉泰姆	2100qVP嘉泰姆
CXSD6279BqVP嘉泰姆	SOP-14qVP嘉泰姆	VM qVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	10qVP嘉泰姆	5qVP嘉泰姆	13.2qVP嘉泰姆	0.8qVP嘉泰姆	12qVP嘉泰姆	2000qVP嘉泰姆
CXSD6280qVP嘉泰姆	TSSOP-24qVP嘉泰姆 \|QFN5x5-32qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	2qVP嘉泰姆	20qVP嘉泰姆	5qVP嘉泰姆	13.2qVP嘉泰姆	0.6qVP嘉泰姆	5~12qVP嘉泰姆	4000qVP嘉泰姆
CXSD6281NqVP嘉泰姆	SOP14qVP嘉泰姆 QSOP16qVP嘉泰姆 QFN-16qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	30qVP嘉泰姆	2.9qVP嘉泰姆	13.2qVP嘉泰姆	0.9qVP嘉泰姆	12qVP嘉泰姆	4000qVP嘉泰姆
CXSD6282qVP嘉泰姆	SOP-14qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	30qVP嘉泰姆	2.2qVP嘉泰姆	13.2qVP嘉泰姆	0.6qVP嘉泰姆	12qVP嘉泰姆	5000qVP嘉泰姆
CXSD6282AqVP嘉泰姆	SOP-14qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	30qVP嘉泰姆	2.2qVP嘉泰姆	13.2qVP嘉泰姆	0.6qVP嘉泰姆	12qVP嘉泰姆	5000qVP嘉泰姆
CXSD6283qVP嘉泰姆	SOP-14qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	25qVP嘉泰姆	2.2qVP嘉泰姆	13.2qVP嘉泰姆	0.8qVP嘉泰姆	12qVP嘉泰姆	5000qVP嘉泰姆
CXSD6284/AqVP嘉泰姆	LQFP7x7 48qVP嘉泰姆 TQFN7x7-48qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	6qVP嘉泰姆	0.015qVP嘉泰姆	1.4qVP嘉泰姆	6.5qVP嘉泰姆	-qVP嘉泰姆	5qVP嘉泰姆	1800qVP嘉泰姆
CXSD6285qVP嘉泰姆	TSSOP-24PqVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	2qVP嘉泰姆	20qVP嘉泰姆	2.97qVP嘉泰姆	5.5qVP嘉泰姆	0.8qVP嘉泰姆	5~12qVP嘉泰姆	5000qVP嘉泰姆
CXSD6286qVP嘉泰姆	SOP-14qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	10qVP嘉泰姆	5qVP嘉泰姆	13.2qVP嘉泰姆	0.8qVP嘉泰姆	12qVP嘉泰姆	3000qVP嘉泰姆
CXSD6287qVP嘉泰姆	SOP-8-P\|DIP-8qVP嘉泰姆	VMqVP嘉泰姆	1qVP嘉泰姆	1qVP嘉泰姆	30qVP嘉泰姆	2.9qVP嘉泰姆	13.2qVP嘉泰姆	1.2qVP嘉泰姆	12qVP嘉泰姆	3000qVP嘉泰姆
CXSD6288qVP嘉泰姆	SSOP28qVP嘉泰姆 QFN4x4-24qVP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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