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：324

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lIY嘉泰姆

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

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

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

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

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

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

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

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

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

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

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

CXSD62106A is available in 3mmx3mm 20-pin TQFN package.lIY嘉泰姆
二.产品特点(Features)lIY嘉泰姆
Buck Controller (VDDQ)lIY嘉泰姆
· High Input Voltages Range from 3V to 28V Input PowerlIY嘉泰姆
Provide 1.8V (DDR2), 1.5V (DDR3) or AdjustablelIY嘉泰姆
Output Voltage from 0.75V to 5.5VlIY嘉泰姆
- ±1% Accuracy Over-TemperaturelIY嘉泰姆
Integrated MOSFET Drivers and Bootstrap DiodelIY嘉泰姆
Excellent Line and Load Transient ResponseslIY嘉泰姆
PFM Mode for Increased Light Load EfficiencylIY嘉泰姆
Constant-On-Time Controller SchemelIY嘉泰姆
- Switching Frequency Compensation for PWMModelIY嘉泰姆
- Adjustable Switching Frequency from 100kHzlIY嘉泰姆
to 550kHz in PWM Mode with DC Output CurrentlIY嘉泰姆
Integrated MOSFET Drivers and Bootstrap DiodelIY嘉泰姆
S3 and S5 Pins Control The Device in S0, S3, or S4/S5 StatelIY嘉泰姆
Power Good MonitoringlIY嘉泰姆
70% Under-Voltage Protection (UVP)lIY嘉泰姆
125% Over-Voltage Protection (OVP)lIY嘉泰姆
Adjustable Current-Limit ProtectionlIY嘉泰姆
Using Sense Low-Side MOSFET RDS(ON)lIY嘉泰姆
±1.5A LDO Section (VTT)lIY嘉泰姆
Souring or Sinking Current up to 1.5AlIY嘉泰姆
Fast Transient Response for Output VoltagelIY嘉泰姆
Output Ceramic Capacitors Support at Least 10μF MLCClIY嘉泰姆
VTT and VTTREF Track at Half the VDDQSNS by Internal DividerlIY嘉泰姆
±20mV Accuracy for VTT and VTTREFlIY嘉泰姆

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

Thermal Shutdown ProtectionlIY嘉泰姆

QFN-24 4mmx4mm Thin Package (TQFN4x4-24A)lIY嘉泰姆
for CXSD62106 and QFN-20 3mmx3mm ThinlIY嘉泰姆
Package (TQFN3x3-20) for CXSD62106AlIY嘉泰姆
Lead Free and Green Devices AvailablelIY嘉泰姆

三,应用范围 (Applications)lIY嘉泰姆

DDR2, and DDR3 Memory Power SupplieslIY嘉泰姆
SSTL-2 SSTL-18 and HSTL TerminationlIY嘉泰姆
四.下载产品资料PDF文档 lIY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！lIY嘉泰姆

QQ截图20160419174301.jpg lIY嘉泰姆

五,产品封装图 (Package)lIY嘉泰姆

lIY嘉泰姆

六.电路原理图lIY嘉泰姆

lIY嘉泰姆

七,功能概述lIY嘉泰姆

Layout Consideration (Cont.)lIY嘉泰姆

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

八,相关产品 更多同类产品...... lIY嘉泰姆

Switching Regulator > Buck ControllerlIY嘉泰姆
Part_No lIY嘉泰姆	Package lIY嘉泰姆	ArchilIY嘉泰姆 tectulIY嘉泰姆	PhaselIY嘉泰姆	No.oflIY嘉泰姆 PWMlIY嘉泰姆 OutputlIY嘉泰姆	Output lIY嘉泰姆 CurrentlIY嘉泰姆 (A) lIY嘉泰姆	InputlIY嘉泰姆 Voltage (V) lIY嘉泰姆		ReferencelIY嘉泰姆 VoltagelIY嘉泰姆 (V) lIY嘉泰姆	Bias lIY嘉泰姆 VoltagelIY嘉泰姆 (V) lIY嘉泰姆	QuiescentlIY嘉泰姆 CurrentlIY嘉泰姆 (uA) lIY嘉泰姆
Part_No lIY嘉泰姆	Package lIY嘉泰姆	ArchilIY嘉泰姆 tectulIY嘉泰姆	PhaselIY嘉泰姆	No.oflIY嘉泰姆 PWMlIY嘉泰姆 OutputlIY嘉泰姆	Output lIY嘉泰姆 CurrentlIY嘉泰姆 (A) lIY嘉泰姆	minlIY嘉泰姆	maxlIY嘉泰姆	ReferencelIY嘉泰姆 VoltagelIY嘉泰姆 (V) lIY嘉泰姆	Bias lIY嘉泰姆 VoltagelIY嘉泰姆 (V) lIY嘉泰姆	QuiescentlIY嘉泰姆 CurrentlIY嘉泰姆 (uA) lIY嘉泰姆
CXSD6273lIY嘉泰姆	SOP-14lIY嘉泰姆 QSOP-16lIY嘉泰姆 QFN4x4-16lIY嘉泰姆	VM lIY嘉泰姆	1 lIY嘉泰姆	1 lIY嘉泰姆	30lIY嘉泰姆	2.9 lIY嘉泰姆	13.2lIY嘉泰姆	0.9lIY嘉泰姆	12 lIY嘉泰姆	8000lIY嘉泰姆
CXSD6274lIY嘉泰姆	SOP-8lIY嘉泰姆	VM lIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	20lIY嘉泰姆	2.9 lIY嘉泰姆	13.2 lIY嘉泰姆	0.8lIY嘉泰姆	12lIY嘉泰姆	5000lIY嘉泰姆
CXSD6274ClIY嘉泰姆	SOP-8lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	20lIY嘉泰姆	2.9lIY嘉泰姆	13.2lIY嘉泰姆	0.8lIY嘉泰姆	12lIY嘉泰姆	5000lIY嘉泰姆
CXSD6275lIY嘉泰姆	QFN4x4-24lIY嘉泰姆	VMlIY嘉泰姆	2lIY嘉泰姆	1lIY嘉泰姆	60lIY嘉泰姆	3.1lIY嘉泰姆	13.2lIY嘉泰姆	0.6lIY嘉泰姆	12lIY嘉泰姆	5000lIY嘉泰姆
CXSD6276lIY嘉泰姆	SOP-8lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	20lIY嘉泰姆	2.2lIY嘉泰姆	13.2lIY嘉泰姆	0.8lIY嘉泰姆	5~12lIY嘉泰姆	2100lIY嘉泰姆
CXSD6276AlIY嘉泰姆	SOP-8lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	20lIY嘉泰姆	2.2lIY嘉泰姆	13.2lIY嘉泰姆	0.8lIY嘉泰姆	5~12lIY嘉泰姆	2100lIY嘉泰姆
CXSD6277/A/BlIY嘉泰姆	SOP8\|TSSOP8lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	5lIY嘉泰姆	5lIY嘉泰姆	13.2lIY嘉泰姆	1.25\|0.8lIY嘉泰姆	5~12lIY嘉泰姆	3000lIY嘉泰姆
CXSD6278lIY嘉泰姆	SOP-8lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	10lIY嘉泰姆	3.3lIY嘉泰姆	5.5lIY嘉泰姆	0.8lIY嘉泰姆	5lIY嘉泰姆	2100lIY嘉泰姆
CXSD6279BlIY嘉泰姆	SOP-14lIY嘉泰姆	VM lIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	10lIY嘉泰姆	5lIY嘉泰姆	13.2lIY嘉泰姆	0.8lIY嘉泰姆	12lIY嘉泰姆	2000lIY嘉泰姆
CXSD6280lIY嘉泰姆	TSSOP-24lIY嘉泰姆 \|QFN5x5-32lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	2lIY嘉泰姆	20lIY嘉泰姆	5lIY嘉泰姆	13.2lIY嘉泰姆	0.6lIY嘉泰姆	5~12lIY嘉泰姆	4000lIY嘉泰姆
CXSD6281NlIY嘉泰姆	SOP14lIY嘉泰姆 QSOP16lIY嘉泰姆 QFN-16lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	30lIY嘉泰姆	2.9lIY嘉泰姆	13.2lIY嘉泰姆	0.9lIY嘉泰姆	12lIY嘉泰姆	4000lIY嘉泰姆
CXSD6282lIY嘉泰姆	SOP-14lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	30lIY嘉泰姆	2.2lIY嘉泰姆	13.2lIY嘉泰姆	0.6lIY嘉泰姆	12lIY嘉泰姆	5000lIY嘉泰姆
CXSD6282AlIY嘉泰姆	SOP-14lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	30lIY嘉泰姆	2.2lIY嘉泰姆	13.2lIY嘉泰姆	0.6lIY嘉泰姆	12lIY嘉泰姆	5000lIY嘉泰姆
CXSD6283lIY嘉泰姆	SOP-14lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	25lIY嘉泰姆	2.2lIY嘉泰姆	13.2lIY嘉泰姆	0.8lIY嘉泰姆	12lIY嘉泰姆	5000lIY嘉泰姆
CXSD6284/AlIY嘉泰姆	LQFP7x7 48lIY嘉泰姆 TQFN7x7-48lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	6lIY嘉泰姆	0.015lIY嘉泰姆	1.4lIY嘉泰姆	6.5lIY嘉泰姆	-lIY嘉泰姆	5lIY嘉泰姆	1800lIY嘉泰姆
CXSD6285lIY嘉泰姆	TSSOP-24PlIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	2lIY嘉泰姆	20lIY嘉泰姆	2.97lIY嘉泰姆	5.5lIY嘉泰姆	0.8lIY嘉泰姆	5~12lIY嘉泰姆	5000lIY嘉泰姆
CXSD6286lIY嘉泰姆	SOP-14lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	10lIY嘉泰姆	5lIY嘉泰姆	13.2lIY嘉泰姆	0.8lIY嘉泰姆	12lIY嘉泰姆	3000lIY嘉泰姆
CXSD6287lIY嘉泰姆	SOP-8-P\|DIP-8lIY嘉泰姆	VMlIY嘉泰姆	1lIY嘉泰姆	1lIY嘉泰姆	30lIY嘉泰姆	2.9lIY嘉泰姆	13.2lIY嘉泰姆	1.2lIY嘉泰姆	12lIY嘉泰姆	3000lIY嘉泰姆
CXSD6288lIY嘉泰姆	SSOP28lIY嘉泰姆 QFN4x4-24lIY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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