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：187

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1Bx嘉泰姆

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

一,产品概述(General Description) 1Bx嘉泰姆
The CXSD62106/A integrates a synchronous buck PWM controller to generate1Bx嘉泰姆
VDDQ, a sourcing and sinking LDO linear regulator to generate VTT. It provides1Bx嘉泰姆
a complete power supply for DDR2 and DDR3 memory system. It offers the lowest1Bx嘉泰姆
total solution cost in system where space is at a premium.1Bx嘉泰姆
The CXSD62106/A provides excellent transient response and accurate DC 1Bx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 1Bx嘉泰姆

Mode works nearly at con-stant frequency for low-noise requirements.1Bx嘉泰姆
The CXSD62106/A is equipped with accurate current-limit,output under-voltage,1Bx嘉泰姆

and output over-voltage protections.A Power-On-Reset function monitors the 1Bx嘉泰姆

voltage on VCC prevents wrong operation during power on.The LDO is designed 1Bx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 1Bx嘉泰姆

up to 1.5A. It also incorporates current-limit and thermal shutdown protection.1Bx嘉泰姆

The output voltage of LDO tracks the voltage at VTTREF pin. An internal resistor1Bx嘉泰姆

divider is used to provide a half voltage of VDDQ for VTTREF and VTT Voltage. 1Bx嘉泰姆

The VTT output voltage is only requiring 20μF of ceramic output capacitance for1Bx嘉泰姆

stability and fast transient response. The S3 and S5 pins provide the sleep state1Bx嘉泰姆

for VTT (S3 state)and suspend state (S4/S5 state) for device, when S5 and1Bx嘉泰姆
S3 are both pulled low the device provides the soft-off for VTT and VTTREF.1Bx嘉泰姆
The CXSD62106/A is available in 4mmx4mm 24-pin TQFN package, and the 1Bx嘉泰姆

CXSD62106A is available in 3mmx3mm 20-pin TQFN package.1Bx嘉泰姆
二.产品特点(Features)1Bx嘉泰姆
Buck Controller (VDDQ)1Bx嘉泰姆
· High Input Voltages Range from 3V to 28V Input Power1Bx嘉泰姆
Provide 1.8V (DDR2), 1.5V (DDR3) or Adjustable1Bx嘉泰姆
Output Voltage from 0.75V to 5.5V1Bx嘉泰姆
- ±1% Accuracy Over-Temperature1Bx嘉泰姆
Integrated MOSFET Drivers and Bootstrap Diode1Bx嘉泰姆
Excellent Line and Load Transient Responses1Bx嘉泰姆
PFM Mode for Increased Light Load Efficiency1Bx嘉泰姆
Constant-On-Time Controller Scheme1Bx嘉泰姆
- Switching Frequency Compensation for PWMMode1Bx嘉泰姆
- Adjustable Switching Frequency from 100kHz1Bx嘉泰姆
to 550kHz in PWM Mode with DC Output Current1Bx嘉泰姆
Integrated MOSFET Drivers and Bootstrap Diode1Bx嘉泰姆
S3 and S5 Pins Control The Device in S0, S3, or S4/S5 State1Bx嘉泰姆
Power Good Monitoring1Bx嘉泰姆
70% Under-Voltage Protection (UVP)1Bx嘉泰姆
125% Over-Voltage Protection (OVP)1Bx嘉泰姆
Adjustable Current-Limit Protection1Bx嘉泰姆
Using Sense Low-Side MOSFET RDS(ON)1Bx嘉泰姆
±1.5A LDO Section (VTT)1Bx嘉泰姆
Souring or Sinking Current up to 1.5A1Bx嘉泰姆
Fast Transient Response for Output Voltage1Bx嘉泰姆
Output Ceramic Capacitors Support at Least 10μF MLCC1Bx嘉泰姆
VTT and VTTREF Track at Half the VDDQSNS by Internal Divider1Bx嘉泰姆
±20mV Accuracy for VTT and VTTREF1Bx嘉泰姆

Independent Over-Current-Limit (OCL) 1Bx嘉泰姆

Thermal Shutdown Protection1Bx嘉泰姆

QFN-24 4mmx4mm Thin Package (TQFN4x4-24A)1Bx嘉泰姆
for CXSD62106 and QFN-20 3mmx3mm Thin1Bx嘉泰姆
Package (TQFN3x3-20) for CXSD62106A1Bx嘉泰姆
Lead Free and Green Devices Available1Bx嘉泰姆

三,应用范围 (Applications)1Bx嘉泰姆

DDR2, and DDR3 Memory Power Supplies1Bx嘉泰姆
SSTL-2 SSTL-18 and HSTL Termination1Bx嘉泰姆
四.下载产品资料PDF文档 1Bx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！1Bx嘉泰姆

QQ截图20160419174301.jpg 1Bx嘉泰姆

五,产品封装图 (Package)1Bx嘉泰姆

1Bx嘉泰姆

六.电路原理图1Bx嘉泰姆

1Bx嘉泰姆

七,功能概述1Bx嘉泰姆

Layout Consideration (Cont.)1Bx嘉泰姆

· Keep the switching nodes (UGATE, LGATE, BOOT, and PHASE) away from sensitive small signal nodes1Bx嘉泰姆
(VDDQSET, VTTREF, CS, and MODE) since these nodes are fast mov ing signals. Therefore, keep traces1Bx嘉泰姆
to these nodes as short as possible and there should be no other weak signal traces in parallel with theses1Bx嘉泰姆
traces on any layer.1Bx嘉泰姆
The signals going through theses traces have both high dv/dt and high di/dt, with high peak charging and1Bx嘉泰姆
discharging current. The traces from the gate drivers to the MOSFETs (UGATE and LGATE) should be short1Bx嘉泰姆
and wide.1Bx嘉泰姆
Place the source of the high-side MOSFET and the drain of the low-side MOSFET as close as possible. Mini-1Bx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 are1Bx嘉泰姆
also placednear the drain).1Bx嘉泰姆
The input capacitor should be near the drain of the up per MOSFET; the high quality ceramic decoupling ca-1Bx嘉泰姆
pacitor can be put close to the VCC and GND pins; the VTTREF decoupling capasitor should be close to the1Bx嘉泰姆
VTTREF pin and GND; the VDDQ and VTT output ca-pacitors should be located right across their output pin1Bx嘉泰姆
as clase as possible to the part to minimize parasitics.1Bx嘉泰姆
The input capacitor GND should be close to the output capacitor GND and the lower MOSFET GND.1Bx嘉泰姆
· The drain of the MOSFETs (VIN and PHASE nodes) should be a large plane for heat sinking. And PHASE1Bx嘉泰姆
pin traces are also the return path for UGATE. Connect this pin to the converter’s upper MOSFET source.1Bx嘉泰姆
· The CXSD62106/A used ripple mode control. Build the resistor divider close to the VDDQSET pin so that the1Bx嘉泰姆
high imped ance trace is shorter when the output volt-age is in ad justable mode. And the VDDQSET pin1Bx嘉泰姆
traces can’t be closed to the switching signal traces (UGATE, LGATE, BOOT, and PHASE)1Bx嘉泰姆
The PGND trace should be a separate trace, and inde pendently go to the source of the low-side MOSFETs1Bx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 decoupling1Bx嘉泰姆

八,相关产品 更多同类产品...... 1Bx嘉泰姆

Switching Regulator > Buck Controller1Bx嘉泰姆
Part_No 1Bx嘉泰姆	Package 1Bx嘉泰姆	Archi1Bx嘉泰姆 tectu1Bx嘉泰姆	Phase1Bx嘉泰姆	No.of1Bx嘉泰姆 PWM1Bx嘉泰姆 Output1Bx嘉泰姆	Output 1Bx嘉泰姆 Current1Bx嘉泰姆 (A) 1Bx嘉泰姆	Input1Bx嘉泰姆 Voltage (V) 1Bx嘉泰姆		Reference1Bx嘉泰姆 Voltage1Bx嘉泰姆 (V) 1Bx嘉泰姆	Bias 1Bx嘉泰姆 Voltage1Bx嘉泰姆 (V) 1Bx嘉泰姆	Quiescent1Bx嘉泰姆 Current1Bx嘉泰姆 (uA) 1Bx嘉泰姆
Part_No 1Bx嘉泰姆	Package 1Bx嘉泰姆	Archi1Bx嘉泰姆 tectu1Bx嘉泰姆	Phase1Bx嘉泰姆	No.of1Bx嘉泰姆 PWM1Bx嘉泰姆 Output1Bx嘉泰姆	Output 1Bx嘉泰姆 Current1Bx嘉泰姆 (A) 1Bx嘉泰姆	min1Bx嘉泰姆	max1Bx嘉泰姆	Reference1Bx嘉泰姆 Voltage1Bx嘉泰姆 (V) 1Bx嘉泰姆	Bias 1Bx嘉泰姆 Voltage1Bx嘉泰姆 (V) 1Bx嘉泰姆	Quiescent1Bx嘉泰姆 Current1Bx嘉泰姆 (uA) 1Bx嘉泰姆
CXSD62731Bx嘉泰姆	SOP-141Bx嘉泰姆 QSOP-161Bx嘉泰姆 QFN4x4-161Bx嘉泰姆	VM 1Bx嘉泰姆	1 1Bx嘉泰姆	1 1Bx嘉泰姆	301Bx嘉泰姆	2.9 1Bx嘉泰姆	13.21Bx嘉泰姆	0.91Bx嘉泰姆	12 1Bx嘉泰姆	80001Bx嘉泰姆
CXSD62741Bx嘉泰姆	SOP-81Bx嘉泰姆	VM 1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	201Bx嘉泰姆	2.9 1Bx嘉泰姆	13.2 1Bx嘉泰姆	0.81Bx嘉泰姆	121Bx嘉泰姆	50001Bx嘉泰姆
CXSD6274C1Bx嘉泰姆	SOP-81Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	201Bx嘉泰姆	2.91Bx嘉泰姆	13.21Bx嘉泰姆	0.81Bx嘉泰姆	121Bx嘉泰姆	50001Bx嘉泰姆
CXSD62751Bx嘉泰姆	QFN4x4-241Bx嘉泰姆	VM1Bx嘉泰姆	21Bx嘉泰姆	11Bx嘉泰姆	601Bx嘉泰姆	3.11Bx嘉泰姆	13.21Bx嘉泰姆	0.61Bx嘉泰姆	121Bx嘉泰姆	50001Bx嘉泰姆
CXSD62761Bx嘉泰姆	SOP-81Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	201Bx嘉泰姆	2.21Bx嘉泰姆	13.21Bx嘉泰姆	0.81Bx嘉泰姆	5~121Bx嘉泰姆	21001Bx嘉泰姆
CXSD6276A1Bx嘉泰姆	SOP-81Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	201Bx嘉泰姆	2.21Bx嘉泰姆	13.21Bx嘉泰姆	0.81Bx嘉泰姆	5~121Bx嘉泰姆	21001Bx嘉泰姆
CXSD6277/A/B1Bx嘉泰姆	SOP8\|TSSOP81Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	51Bx嘉泰姆	51Bx嘉泰姆	13.21Bx嘉泰姆	1.25\|0.81Bx嘉泰姆	5~121Bx嘉泰姆	30001Bx嘉泰姆
CXSD62781Bx嘉泰姆	SOP-81Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	101Bx嘉泰姆	3.31Bx嘉泰姆	5.51Bx嘉泰姆	0.81Bx嘉泰姆	51Bx嘉泰姆	21001Bx嘉泰姆
CXSD6279B1Bx嘉泰姆	SOP-141Bx嘉泰姆	VM 1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	101Bx嘉泰姆	51Bx嘉泰姆	13.21Bx嘉泰姆	0.81Bx嘉泰姆	121Bx嘉泰姆	20001Bx嘉泰姆
CXSD62801Bx嘉泰姆	TSSOP-241Bx嘉泰姆 \|QFN5x5-321Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	21Bx嘉泰姆	201Bx嘉泰姆	51Bx嘉泰姆	13.21Bx嘉泰姆	0.61Bx嘉泰姆	5~121Bx嘉泰姆	40001Bx嘉泰姆
CXSD6281N1Bx嘉泰姆	SOP141Bx嘉泰姆 QSOP161Bx嘉泰姆 QFN-161Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	301Bx嘉泰姆	2.91Bx嘉泰姆	13.21Bx嘉泰姆	0.91Bx嘉泰姆	121Bx嘉泰姆	40001Bx嘉泰姆
CXSD62821Bx嘉泰姆	SOP-141Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	301Bx嘉泰姆	2.21Bx嘉泰姆	13.21Bx嘉泰姆	0.61Bx嘉泰姆	121Bx嘉泰姆	50001Bx嘉泰姆
CXSD6282A1Bx嘉泰姆	SOP-141Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	301Bx嘉泰姆	2.21Bx嘉泰姆	13.21Bx嘉泰姆	0.61Bx嘉泰姆	121Bx嘉泰姆	50001Bx嘉泰姆
CXSD62831Bx嘉泰姆	SOP-141Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	251Bx嘉泰姆	2.21Bx嘉泰姆	13.21Bx嘉泰姆	0.81Bx嘉泰姆	121Bx嘉泰姆	50001Bx嘉泰姆
CXSD6284/A1Bx嘉泰姆	LQFP7x7 481Bx嘉泰姆 TQFN7x7-481Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	61Bx嘉泰姆	0.0151Bx嘉泰姆	1.41Bx嘉泰姆	6.51Bx嘉泰姆	-1Bx嘉泰姆	51Bx嘉泰姆	18001Bx嘉泰姆
CXSD62851Bx嘉泰姆	TSSOP-24P1Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	21Bx嘉泰姆	201Bx嘉泰姆	2.971Bx嘉泰姆	5.51Bx嘉泰姆	0.81Bx嘉泰姆	5~121Bx嘉泰姆	50001Bx嘉泰姆
CXSD62861Bx嘉泰姆	SOP-141Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	101Bx嘉泰姆	51Bx嘉泰姆	13.21Bx嘉泰姆	0.81Bx嘉泰姆	121Bx嘉泰姆	30001Bx嘉泰姆
CXSD62871Bx嘉泰姆	SOP-8-P\|DIP-81Bx嘉泰姆	VM1Bx嘉泰姆	11Bx嘉泰姆	11Bx嘉泰姆	301Bx嘉泰姆	2.91Bx嘉泰姆	13.21Bx嘉泰姆	1.21Bx嘉泰姆	121Bx嘉泰姆	30001Bx嘉泰姆
CXSD62881Bx嘉泰姆	SSOP281Bx嘉泰姆 QFN4x4-241Bx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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