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：70

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hPQ嘉泰姆

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

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

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

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

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

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

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

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

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

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

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

CXSD62106A is available in 3mmx3mm 20-pin TQFN package.hPQ嘉泰姆
二.产品特点(Features)hPQ嘉泰姆
Buck Controller (VDDQ)hPQ嘉泰姆
· High Input Voltages Range from 3V to 28V Input PowerhPQ嘉泰姆
Provide 1.8V (DDR2), 1.5V (DDR3) or AdjustablehPQ嘉泰姆
Output Voltage from 0.75V to 5.5VhPQ嘉泰姆
- ±1% Accuracy Over-TemperaturehPQ嘉泰姆
Integrated MOSFET Drivers and Bootstrap DiodehPQ嘉泰姆
Excellent Line and Load Transient ResponseshPQ嘉泰姆
PFM Mode for Increased Light Load EfficiencyhPQ嘉泰姆
Constant-On-Time Controller SchemehPQ嘉泰姆
- Switching Frequency Compensation for PWMModehPQ嘉泰姆
- Adjustable Switching Frequency from 100kHzhPQ嘉泰姆
to 550kHz in PWM Mode with DC Output CurrenthPQ嘉泰姆
Integrated MOSFET Drivers and Bootstrap DiodehPQ嘉泰姆
S3 and S5 Pins Control The Device in S0, S3, or S4/S5 StatehPQ嘉泰姆
Power Good MonitoringhPQ嘉泰姆
70% Under-Voltage Protection (UVP)hPQ嘉泰姆
125% Over-Voltage Protection (OVP)hPQ嘉泰姆
Adjustable Current-Limit ProtectionhPQ嘉泰姆
Using Sense Low-Side MOSFET RDS(ON)hPQ嘉泰姆
±1.5A LDO Section (VTT)hPQ嘉泰姆
Souring or Sinking Current up to 1.5AhPQ嘉泰姆
Fast Transient Response for Output VoltagehPQ嘉泰姆
Output Ceramic Capacitors Support at Least 10μF MLCChPQ嘉泰姆
VTT and VTTREF Track at Half the VDDQSNS by Internal DividerhPQ嘉泰姆
±20mV Accuracy for VTT and VTTREFhPQ嘉泰姆

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

Thermal Shutdown ProtectionhPQ嘉泰姆

QFN-24 4mmx4mm Thin Package (TQFN4x4-24A)hPQ嘉泰姆
for CXSD62106 and QFN-20 3mmx3mm ThinhPQ嘉泰姆
Package (TQFN3x3-20) for CXSD62106AhPQ嘉泰姆
Lead Free and Green Devices AvailablehPQ嘉泰姆

三,应用范围 (Applications)hPQ嘉泰姆

DDR2, and DDR3 Memory Power SupplieshPQ嘉泰姆
SSTL-2 SSTL-18 and HSTL TerminationhPQ嘉泰姆
四.下载产品资料PDF文档 hPQ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！hPQ嘉泰姆

QQ截图20160419174301.jpg hPQ嘉泰姆

五,产品封装图 (Package)hPQ嘉泰姆

hPQ嘉泰姆

六.电路原理图hPQ嘉泰姆

hPQ嘉泰姆

七,功能概述hPQ嘉泰姆

Layout Consideration (Cont.)hPQ嘉泰姆

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

八,相关产品 更多同类产品...... hPQ嘉泰姆

Switching Regulator > Buck ControllerhPQ嘉泰姆
Part_No hPQ嘉泰姆	Package hPQ嘉泰姆	ArchihPQ嘉泰姆 tectuhPQ嘉泰姆	PhasehPQ嘉泰姆	No.ofhPQ嘉泰姆 PWMhPQ嘉泰姆 OutputhPQ嘉泰姆	Output hPQ嘉泰姆 CurrenthPQ嘉泰姆 (A) hPQ嘉泰姆	InputhPQ嘉泰姆 Voltage (V) hPQ嘉泰姆		ReferencehPQ嘉泰姆 VoltagehPQ嘉泰姆 (V) hPQ嘉泰姆	Bias hPQ嘉泰姆 VoltagehPQ嘉泰姆 (V) hPQ嘉泰姆	QuiescenthPQ嘉泰姆 CurrenthPQ嘉泰姆 (uA) hPQ嘉泰姆
Part_No hPQ嘉泰姆	Package hPQ嘉泰姆	ArchihPQ嘉泰姆 tectuhPQ嘉泰姆	PhasehPQ嘉泰姆	No.ofhPQ嘉泰姆 PWMhPQ嘉泰姆 OutputhPQ嘉泰姆	Output hPQ嘉泰姆 CurrenthPQ嘉泰姆 (A) hPQ嘉泰姆	minhPQ嘉泰姆	maxhPQ嘉泰姆	ReferencehPQ嘉泰姆 VoltagehPQ嘉泰姆 (V) hPQ嘉泰姆	Bias hPQ嘉泰姆 VoltagehPQ嘉泰姆 (V) hPQ嘉泰姆	QuiescenthPQ嘉泰姆 CurrenthPQ嘉泰姆 (uA) hPQ嘉泰姆
CXSD6273hPQ嘉泰姆	SOP-14hPQ嘉泰姆 QSOP-16hPQ嘉泰姆 QFN4x4-16hPQ嘉泰姆	VM hPQ嘉泰姆	1 hPQ嘉泰姆	1 hPQ嘉泰姆	30hPQ嘉泰姆	2.9 hPQ嘉泰姆	13.2hPQ嘉泰姆	0.9hPQ嘉泰姆	12 hPQ嘉泰姆	8000hPQ嘉泰姆
CXSD6274hPQ嘉泰姆	SOP-8hPQ嘉泰姆	VM hPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	20hPQ嘉泰姆	2.9 hPQ嘉泰姆	13.2 hPQ嘉泰姆	0.8hPQ嘉泰姆	12hPQ嘉泰姆	5000hPQ嘉泰姆
CXSD6274ChPQ嘉泰姆	SOP-8hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	20hPQ嘉泰姆	2.9hPQ嘉泰姆	13.2hPQ嘉泰姆	0.8hPQ嘉泰姆	12hPQ嘉泰姆	5000hPQ嘉泰姆
CXSD6275hPQ嘉泰姆	QFN4x4-24hPQ嘉泰姆	VMhPQ嘉泰姆	2hPQ嘉泰姆	1hPQ嘉泰姆	60hPQ嘉泰姆	3.1hPQ嘉泰姆	13.2hPQ嘉泰姆	0.6hPQ嘉泰姆	12hPQ嘉泰姆	5000hPQ嘉泰姆
CXSD6276hPQ嘉泰姆	SOP-8hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	20hPQ嘉泰姆	2.2hPQ嘉泰姆	13.2hPQ嘉泰姆	0.8hPQ嘉泰姆	5~12hPQ嘉泰姆	2100hPQ嘉泰姆
CXSD6276AhPQ嘉泰姆	SOP-8hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	20hPQ嘉泰姆	2.2hPQ嘉泰姆	13.2hPQ嘉泰姆	0.8hPQ嘉泰姆	5~12hPQ嘉泰姆	2100hPQ嘉泰姆
CXSD6277/A/BhPQ嘉泰姆	SOP8\|TSSOP8hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	5hPQ嘉泰姆	5hPQ嘉泰姆	13.2hPQ嘉泰姆	1.25\|0.8hPQ嘉泰姆	5~12hPQ嘉泰姆	3000hPQ嘉泰姆
CXSD6278hPQ嘉泰姆	SOP-8hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	10hPQ嘉泰姆	3.3hPQ嘉泰姆	5.5hPQ嘉泰姆	0.8hPQ嘉泰姆	5hPQ嘉泰姆	2100hPQ嘉泰姆
CXSD6279BhPQ嘉泰姆	SOP-14hPQ嘉泰姆	VM hPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	10hPQ嘉泰姆	5hPQ嘉泰姆	13.2hPQ嘉泰姆	0.8hPQ嘉泰姆	12hPQ嘉泰姆	2000hPQ嘉泰姆
CXSD6280hPQ嘉泰姆	TSSOP-24hPQ嘉泰姆 \|QFN5x5-32hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	2hPQ嘉泰姆	20hPQ嘉泰姆	5hPQ嘉泰姆	13.2hPQ嘉泰姆	0.6hPQ嘉泰姆	5~12hPQ嘉泰姆	4000hPQ嘉泰姆
CXSD6281NhPQ嘉泰姆	SOP14hPQ嘉泰姆 QSOP16hPQ嘉泰姆 QFN-16hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	30hPQ嘉泰姆	2.9hPQ嘉泰姆	13.2hPQ嘉泰姆	0.9hPQ嘉泰姆	12hPQ嘉泰姆	4000hPQ嘉泰姆
CXSD6282hPQ嘉泰姆	SOP-14hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	30hPQ嘉泰姆	2.2hPQ嘉泰姆	13.2hPQ嘉泰姆	0.6hPQ嘉泰姆	12hPQ嘉泰姆	5000hPQ嘉泰姆
CXSD6282AhPQ嘉泰姆	SOP-14hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	30hPQ嘉泰姆	2.2hPQ嘉泰姆	13.2hPQ嘉泰姆	0.6hPQ嘉泰姆	12hPQ嘉泰姆	5000hPQ嘉泰姆
CXSD6283hPQ嘉泰姆	SOP-14hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	25hPQ嘉泰姆	2.2hPQ嘉泰姆	13.2hPQ嘉泰姆	0.8hPQ嘉泰姆	12hPQ嘉泰姆	5000hPQ嘉泰姆
CXSD6284/AhPQ嘉泰姆	LQFP7x7 48hPQ嘉泰姆 TQFN7x7-48hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	6hPQ嘉泰姆	0.015hPQ嘉泰姆	1.4hPQ嘉泰姆	6.5hPQ嘉泰姆	-hPQ嘉泰姆	5hPQ嘉泰姆	1800hPQ嘉泰姆
CXSD6285hPQ嘉泰姆	TSSOP-24PhPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	2hPQ嘉泰姆	20hPQ嘉泰姆	2.97hPQ嘉泰姆	5.5hPQ嘉泰姆	0.8hPQ嘉泰姆	5~12hPQ嘉泰姆	5000hPQ嘉泰姆
CXSD6286hPQ嘉泰姆	SOP-14hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	10hPQ嘉泰姆	5hPQ嘉泰姆	13.2hPQ嘉泰姆	0.8hPQ嘉泰姆	12hPQ嘉泰姆	3000hPQ嘉泰姆
CXSD6287hPQ嘉泰姆	SOP-8-P\|DIP-8hPQ嘉泰姆	VMhPQ嘉泰姆	1hPQ嘉泰姆	1hPQ嘉泰姆	30hPQ嘉泰姆	2.9hPQ嘉泰姆	13.2hPQ嘉泰姆	1.2hPQ嘉泰姆	12hPQ嘉泰姆	3000hPQ嘉泰姆
CXSD6288hPQ嘉泰姆	SSOP28hPQ嘉泰姆 QFN4x4-24hPQ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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