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：126

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9Sz嘉泰姆

1.产品概述         2.产品特点9Sz嘉泰姆
3.应用范围       4.下载产品资料PDF文档 9Sz嘉泰姆
5.产品封装图                     6.电路原理图             9Sz嘉泰姆
7.功能概述       8.相关产品9Sz嘉泰姆

一,产品概述(General Description) 9Sz嘉泰姆
The CXSD62106/A integrates a synchronous buck PWM controller to generate9Sz嘉泰姆
VDDQ, a sourcing and sinking LDO linear regulator to generate VTT. It provides9Sz嘉泰姆
a complete power supply for DDR2 and DDR3 memory system. It offers the lowest9Sz嘉泰姆
total solution cost in system where space is at a premium.9Sz嘉泰姆
The CXSD62106/A provides excellent transient response and accurate DC 9Sz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 9Sz嘉泰姆

Mode works nearly at con-stant frequency for low-noise requirements.9Sz嘉泰姆
The CXSD62106/A is equipped with accurate current-limit,output under-voltage,9Sz嘉泰姆

and output over-voltage protections.A Power-On-Reset function monitors the 9Sz嘉泰姆

voltage on VCC prevents wrong operation during power on.The LDO is designed 9Sz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 9Sz嘉泰姆

up to 1.5A. It also incorporates current-limit and thermal shutdown protection.9Sz嘉泰姆

The output voltage of LDO tracks the voltage at VTTREF pin. An internal resistor9Sz嘉泰姆

divider is used to provide a half voltage of VDDQ for VTTREF and VTT Voltage. 9Sz嘉泰姆

The VTT output voltage is only requiring 20μF of ceramic output capacitance for9Sz嘉泰姆

stability and fast transient response. The S3 and S5 pins provide the sleep state9Sz嘉泰姆

for VTT (S3 state)and suspend state (S4/S5 state) for device, when S5 and9Sz嘉泰姆
S3 are both pulled low the device provides the soft-off for VTT and VTTREF.9Sz嘉泰姆
The CXSD62106/A is available in 4mmx4mm 24-pin TQFN package, and the 9Sz嘉泰姆

CXSD62106A is available in 3mmx3mm 20-pin TQFN package.9Sz嘉泰姆
二.产品特点(Features)9Sz嘉泰姆
Buck Controller (VDDQ)9Sz嘉泰姆
· High Input Voltages Range from 3V to 28V Input Power9Sz嘉泰姆
Provide 1.8V (DDR2), 1.5V (DDR3) or Adjustable9Sz嘉泰姆
Output Voltage from 0.75V to 5.5V9Sz嘉泰姆
- ±1% Accuracy Over-Temperature9Sz嘉泰姆
Integrated MOSFET Drivers and Bootstrap Diode9Sz嘉泰姆
Excellent Line and Load Transient Responses9Sz嘉泰姆
PFM Mode for Increased Light Load Efficiency9Sz嘉泰姆
Constant-On-Time Controller Scheme9Sz嘉泰姆
- Switching Frequency Compensation for PWMMode9Sz嘉泰姆
- Adjustable Switching Frequency from 100kHz9Sz嘉泰姆
to 550kHz in PWM Mode with DC Output Current9Sz嘉泰姆
Integrated MOSFET Drivers and Bootstrap Diode9Sz嘉泰姆
S3 and S5 Pins Control The Device in S0, S3, or S4/S5 State9Sz嘉泰姆
Power Good Monitoring9Sz嘉泰姆
70% Under-Voltage Protection (UVP)9Sz嘉泰姆
125% Over-Voltage Protection (OVP)9Sz嘉泰姆
Adjustable Current-Limit Protection9Sz嘉泰姆
Using Sense Low-Side MOSFET RDS(ON)9Sz嘉泰姆
±1.5A LDO Section (VTT)9Sz嘉泰姆
Souring or Sinking Current up to 1.5A9Sz嘉泰姆
Fast Transient Response for Output Voltage9Sz嘉泰姆
Output Ceramic Capacitors Support at Least 10μF MLCC9Sz嘉泰姆
VTT and VTTREF Track at Half the VDDQSNS by Internal Divider9Sz嘉泰姆
±20mV Accuracy for VTT and VTTREF9Sz嘉泰姆

Independent Over-Current-Limit (OCL) 9Sz嘉泰姆

Thermal Shutdown Protection9Sz嘉泰姆

QFN-24 4mmx4mm Thin Package (TQFN4x4-24A)9Sz嘉泰姆
for CXSD62106 and QFN-20 3mmx3mm Thin9Sz嘉泰姆
Package (TQFN3x3-20) for CXSD62106A9Sz嘉泰姆
Lead Free and Green Devices Available9Sz嘉泰姆

三,应用范围 (Applications)9Sz嘉泰姆

DDR2, and DDR3 Memory Power Supplies9Sz嘉泰姆
SSTL-2 SSTL-18 and HSTL Termination9Sz嘉泰姆
四.下载产品资料PDF文档 9Sz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！9Sz嘉泰姆

QQ截图20160419174301.jpg 9Sz嘉泰姆

五,产品封装图 (Package)9Sz嘉泰姆

9Sz嘉泰姆

六.电路原理图9Sz嘉泰姆

9Sz嘉泰姆

七,功能概述9Sz嘉泰姆

Layout Consideration (Cont.)9Sz嘉泰姆

· Keep the switching nodes (UGATE, LGATE, BOOT, and PHASE) away from sensitive small signal nodes9Sz嘉泰姆
(VDDQSET, VTTREF, CS, and MODE) since these nodes are fast mov ing signals. Therefore, keep traces9Sz嘉泰姆
to these nodes as short as possible and there should be no other weak signal traces in parallel with theses9Sz嘉泰姆
traces on any layer.9Sz嘉泰姆
The signals going through theses traces have both high dv/dt and high di/dt, with high peak charging and9Sz嘉泰姆
discharging current. The traces from the gate drivers to the MOSFETs (UGATE and LGATE) should be short9Sz嘉泰姆
and wide.9Sz嘉泰姆
Place the source of the high-side MOSFET and the drain of the low-side MOSFET as close as possible. Mini-9Sz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 are9Sz嘉泰姆
also placednear the drain).9Sz嘉泰姆
The input capacitor should be near the drain of the up per MOSFET; the high quality ceramic decoupling ca-9Sz嘉泰姆
pacitor can be put close to the VCC and GND pins; the VTTREF decoupling capasitor should be close to the9Sz嘉泰姆
VTTREF pin and GND; the VDDQ and VTT output ca-pacitors should be located right across their output pin9Sz嘉泰姆
as clase as possible to the part to minimize parasitics.9Sz嘉泰姆
The input capacitor GND should be close to the output capacitor GND and the lower MOSFET GND.9Sz嘉泰姆
· The drain of the MOSFETs (VIN and PHASE nodes) should be a large plane for heat sinking. And PHASE9Sz嘉泰姆
pin traces are also the return path for UGATE. Connect this pin to the converter’s upper MOSFET source.9Sz嘉泰姆
· The CXSD62106/A used ripple mode control. Build the resistor divider close to the VDDQSET pin so that the9Sz嘉泰姆
high imped ance trace is shorter when the output volt-age is in ad justable mode. And the VDDQSET pin9Sz嘉泰姆
traces can’t be closed to the switching signal traces (UGATE, LGATE, BOOT, and PHASE)9Sz嘉泰姆
The PGND trace should be a separate trace, and inde pendently go to the source of the low-side MOSFETs9Sz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 decoupling9Sz嘉泰姆

八,相关产品 更多同类产品...... 9Sz嘉泰姆

Switching Regulator > Buck Controller9Sz嘉泰姆
Part_No 9Sz嘉泰姆	Package 9Sz嘉泰姆	Archi9Sz嘉泰姆 tectu9Sz嘉泰姆	Phase9Sz嘉泰姆	No.of9Sz嘉泰姆 PWM9Sz嘉泰姆 Output9Sz嘉泰姆	Output 9Sz嘉泰姆 Current9Sz嘉泰姆 (A) 9Sz嘉泰姆	Input9Sz嘉泰姆 Voltage (V) 9Sz嘉泰姆		Reference9Sz嘉泰姆 Voltage9Sz嘉泰姆 (V) 9Sz嘉泰姆	Bias 9Sz嘉泰姆 Voltage9Sz嘉泰姆 (V) 9Sz嘉泰姆	Quiescent9Sz嘉泰姆 Current9Sz嘉泰姆 (uA) 9Sz嘉泰姆
Part_No 9Sz嘉泰姆	Package 9Sz嘉泰姆	Archi9Sz嘉泰姆 tectu9Sz嘉泰姆	Phase9Sz嘉泰姆	No.of9Sz嘉泰姆 PWM9Sz嘉泰姆 Output9Sz嘉泰姆	Output 9Sz嘉泰姆 Current9Sz嘉泰姆 (A) 9Sz嘉泰姆	min9Sz嘉泰姆	max9Sz嘉泰姆	Reference9Sz嘉泰姆 Voltage9Sz嘉泰姆 (V) 9Sz嘉泰姆	Bias 9Sz嘉泰姆 Voltage9Sz嘉泰姆 (V) 9Sz嘉泰姆	Quiescent9Sz嘉泰姆 Current9Sz嘉泰姆 (uA) 9Sz嘉泰姆
CXSD62739Sz嘉泰姆	SOP-149Sz嘉泰姆 QSOP-169Sz嘉泰姆 QFN4x4-169Sz嘉泰姆	VM 9Sz嘉泰姆	1 9Sz嘉泰姆	1 9Sz嘉泰姆	309Sz嘉泰姆	2.9 9Sz嘉泰姆	13.29Sz嘉泰姆	0.99Sz嘉泰姆	12 9Sz嘉泰姆	80009Sz嘉泰姆
CXSD62749Sz嘉泰姆	SOP-89Sz嘉泰姆	VM 9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	209Sz嘉泰姆	2.9 9Sz嘉泰姆	13.2 9Sz嘉泰姆	0.89Sz嘉泰姆	129Sz嘉泰姆	50009Sz嘉泰姆
CXSD6274C9Sz嘉泰姆	SOP-89Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	209Sz嘉泰姆	2.99Sz嘉泰姆	13.29Sz嘉泰姆	0.89Sz嘉泰姆	129Sz嘉泰姆	50009Sz嘉泰姆
CXSD62759Sz嘉泰姆	QFN4x4-249Sz嘉泰姆	VM9Sz嘉泰姆	29Sz嘉泰姆	19Sz嘉泰姆	609Sz嘉泰姆	3.19Sz嘉泰姆	13.29Sz嘉泰姆	0.69Sz嘉泰姆	129Sz嘉泰姆	50009Sz嘉泰姆
CXSD62769Sz嘉泰姆	SOP-89Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	209Sz嘉泰姆	2.29Sz嘉泰姆	13.29Sz嘉泰姆	0.89Sz嘉泰姆	5~129Sz嘉泰姆	21009Sz嘉泰姆
CXSD6276A9Sz嘉泰姆	SOP-89Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	209Sz嘉泰姆	2.29Sz嘉泰姆	13.29Sz嘉泰姆	0.89Sz嘉泰姆	5~129Sz嘉泰姆	21009Sz嘉泰姆
CXSD6277/A/B9Sz嘉泰姆	SOP8\|TSSOP89Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	59Sz嘉泰姆	59Sz嘉泰姆	13.29Sz嘉泰姆	1.25\|0.89Sz嘉泰姆	5~129Sz嘉泰姆	30009Sz嘉泰姆
CXSD62789Sz嘉泰姆	SOP-89Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	109Sz嘉泰姆	3.39Sz嘉泰姆	5.59Sz嘉泰姆	0.89Sz嘉泰姆	59Sz嘉泰姆	21009Sz嘉泰姆
CXSD6279B9Sz嘉泰姆	SOP-149Sz嘉泰姆	VM 9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	109Sz嘉泰姆	59Sz嘉泰姆	13.29Sz嘉泰姆	0.89Sz嘉泰姆	129Sz嘉泰姆	20009Sz嘉泰姆
CXSD62809Sz嘉泰姆	TSSOP-249Sz嘉泰姆 \|QFN5x5-329Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	29Sz嘉泰姆	209Sz嘉泰姆	59Sz嘉泰姆	13.29Sz嘉泰姆	0.69Sz嘉泰姆	5~129Sz嘉泰姆	40009Sz嘉泰姆
CXSD6281N9Sz嘉泰姆	SOP149Sz嘉泰姆 QSOP169Sz嘉泰姆 QFN-169Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	309Sz嘉泰姆	2.99Sz嘉泰姆	13.29Sz嘉泰姆	0.99Sz嘉泰姆	129Sz嘉泰姆	40009Sz嘉泰姆
CXSD62829Sz嘉泰姆	SOP-149Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	309Sz嘉泰姆	2.29Sz嘉泰姆	13.29Sz嘉泰姆	0.69Sz嘉泰姆	129Sz嘉泰姆	50009Sz嘉泰姆
CXSD6282A9Sz嘉泰姆	SOP-149Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	309Sz嘉泰姆	2.29Sz嘉泰姆	13.29Sz嘉泰姆	0.69Sz嘉泰姆	129Sz嘉泰姆	50009Sz嘉泰姆
CXSD62839Sz嘉泰姆	SOP-149Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	259Sz嘉泰姆	2.29Sz嘉泰姆	13.29Sz嘉泰姆	0.89Sz嘉泰姆	129Sz嘉泰姆	50009Sz嘉泰姆
CXSD6284/A9Sz嘉泰姆	LQFP7x7 489Sz嘉泰姆 TQFN7x7-489Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	69Sz嘉泰姆	0.0159Sz嘉泰姆	1.49Sz嘉泰姆	6.59Sz嘉泰姆	-9Sz嘉泰姆	59Sz嘉泰姆	18009Sz嘉泰姆
CXSD62859Sz嘉泰姆	TSSOP-24P9Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	29Sz嘉泰姆	209Sz嘉泰姆	2.979Sz嘉泰姆	5.59Sz嘉泰姆	0.89Sz嘉泰姆	5~129Sz嘉泰姆	50009Sz嘉泰姆
CXSD62869Sz嘉泰姆	SOP-149Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	109Sz嘉泰姆	59Sz嘉泰姆	13.29Sz嘉泰姆	0.89Sz嘉泰姆	129Sz嘉泰姆	30009Sz嘉泰姆
CXSD62879Sz嘉泰姆	SOP-8-P\|DIP-89Sz嘉泰姆	VM9Sz嘉泰姆	19Sz嘉泰姆	19Sz嘉泰姆	309Sz嘉泰姆	2.99Sz嘉泰姆	13.29Sz嘉泰姆	1.29Sz嘉泰姆	129Sz嘉泰姆	30009Sz嘉泰姆
CXSD62889Sz嘉泰姆	SSOP289Sz嘉泰姆 QFN4x4-249Sz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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