CXSD62115

CXSD62115采用固定频率工作的电压模式PWM架构,以提供出色的负载瞬态响应。该装置利用电感器dcr两端的电压进行电流传感。载重线电压定位(下降)、通道电流平衡和过电流保护通过连续电感DCR电流传感实现

两相PWM控制芯片CXSD62115功率MOSFET驱动器图形微处理器提供精确的电压调节系统

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产品简介

目录2SL嘉泰姆

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

一,产品概述(General Description)    2SL嘉泰姆


  The CXSD62115, two-phase PWM control IC, provides a precision voltage regulation system for advanced graphic microprocessors in graphics card applications. The inte-gration of power MOSFET drivers into the controller IC2SL嘉泰姆
reduces the number of external parts for a cost and space saving power management solution.2SL嘉泰姆
  The CXSD62115 uses a voltage-mode PWM architecture,operating with fixed-frequency, to provide excellent load transient response. The device uses the voltage across the DCRs of the inductors for current sensing. Load line2SL嘉泰姆
voltage positioning (DROOP), channel-current balance,and over-current protection are accomplished through continuous inductor DCR current sensing.2SL嘉泰姆
The MODE pin programs single- or two- phase operation.When IC operates in two-phase mode normally, it can transfer two-phase mode to single phase mode at liberty.Nevertheless, once operates in single-phase mode, the operation mode is latched. It is required to toggle SS or 5VCC pin to reset the IC. Such feature of the MODE pin makes the CXSD62115 ideally suitable for dual power input applications, such as PCIE interfaced graphic cards. This control IC‘s protection features include a set of so- phisticated over-temperature, over-voltage, under-voltage, and over-current protections. Over-voltage results in the converter turning the lower MOSFETs on to clamp the rising output voltage and protects the microprocessor.The over-current protection level is set through externalresistors. The device also provides a power-on-reset func-tion and a programmable soft-start to prevent wrong op-eration and limit the input surge current during power-on or start-up.2SL嘉泰姆
 The CXSD62115 is available in a QFN4x4-24A package2SL嘉泰姆
二.产品特点(Features)2SL嘉泰姆


Voltage-Mode Operation with Current Sharing2SL嘉泰姆
- Adjustable Feedback Compensation2SL嘉泰姆
- Fast Load Transient Response2SL嘉泰姆
Operate with 8V~13.2 VCC Supply Voltage2SL嘉泰姆
Programmable 3-Bit DAC Reference2SL嘉泰姆
-±1.5% System Accuracy Over-Temperature2SL嘉泰姆
Support Single- and Two-Phase Operations2SL嘉泰姆
5V Linear Regulator Output on 5VCC2SL嘉泰姆
8~12V Gate Drivers with Internal Bootstrap Diode2SL嘉泰姆
Lossless Inductor DCR Current Sensing2SL嘉泰姆
Fixed 300kHz Operating Frequency Per Phase2SL嘉泰姆
Power-OK Indicator Output2SL嘉泰姆
- Regulated 1.5V on POK2SL嘉泰姆
Adjustable Over-Current Protection (OCP)2SL嘉泰姆
Accurate Load Line (DROOP) Programming2SL嘉泰姆
Adjustable Soft-Start2SL嘉泰姆
Over-Voltage Protection (OVP)2SL嘉泰姆
Under-Voltage Protection (UVP)2SL嘉泰姆
Over-Temperature Protection (OTP)2SL嘉泰姆
QFN4x4 24-Lead Package (QFN4x4-24A)2SL嘉泰姆
Lead Free and Green Devices Available2SL嘉泰姆
(RoHS Compliant)2SL嘉泰姆
三,应用范围 (Applications)2SL嘉泰姆


Graphics Card GPU Core Power Supply2SL嘉泰姆

Motherboard Chipset or DDR SDRAM Core Power Supply2SL嘉泰姆
On-Board High Power PWM Converter with2SL嘉泰姆

Output Current up to 60A2SL嘉泰姆
四.下载产品资料PDF文档 2SL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2SL嘉泰姆

 QQ截图20160419174301.jpg2SL嘉泰姆

五,产品封装图 (Package)2SL嘉泰姆


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blob.png2SL嘉泰姆
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六.电路原理图2SL嘉泰姆


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七,功能概述2SL嘉泰姆


Layout Consideration 2SL嘉泰姆

In any high switching frequency converter, a correct lay-out is important to ensure proper operation of the2SL嘉泰姆
regulator. With power devices switching at higher frequency, the resulting current transient will cause volt-2SL嘉泰姆
age spike across the interconnecting impedance and parasitic circuit elements. As an example, consider the2SL嘉泰姆
turn-off transition of the PWM MOSFET. Before turn-off condition, the MOSFET is carrying the full load current.2SL嘉泰姆
During turn-off, current stops flowing in the MOSFET and is freewheeling by the lower MOSFET and parasitic diode.2SL嘉泰姆
Any parasitic inductance of the circuit generates a large voltage spike during the switching interval. In general,2SL嘉泰姆
using short and wide printed circuit traces should mini-mize interconnecting impedances and the magnitude of2SL嘉泰姆
voltage spike. And signal and power grounds are to be kept separating and finally combined to use the ground2SL嘉泰姆
plane construction or single point grounding. The best tie-point between the signal ground and the power ground is at the negative side of the output capacitor on each channel, where there is less noise. Noisy traces beneath the IC are not recommended. Below is a checklist for your layout:2SL嘉泰姆
close their pins. (For example, place the decoupling ce-ramic capacitor near the drain of the high-side MOSFET2SL嘉泰姆
as close as possible. The bulk capacitors are also placed near the drain).2SL嘉泰姆
- The input capacitor should be near the drain of the up-per MOSFET; the high quality ceramic decoupling capaci-tor can be put close to the VCC and GND pins; the VTTREF decoupling capacitor should be close to the VTTREF pin and GND; the VDDQ and VTT output capacitors should be located right across their output pin as close as pos-sible to the part to minimize parasitic. The input capacitor GND should be close to the output capacitor GND and the lower MOSFET GND.2SL嘉泰姆
- The drain of the MOSFETs (VIN and PHASE nodes) should be a large plane for heat sinking. And PHASE pin2SL嘉泰姆
traces are also the return path for UGATE. Connect this pin to the converter’s upper MOSFET source.2SL嘉泰姆
- The CXSD62115 used ripple mode control. Build the re- sistor divider close to the VFB pin so that the high imped- ance trace is shorter. And the VFB pin traces can’t be closed to the switching signal traces (UGATE, LGATE,BOOT, and PHASE).2SL嘉泰姆
- The PGND trace should be a separate trace, and inde-pendently go to the source of the low-side MOSFETs for2SL嘉泰姆
current limit accuracy.2SL嘉泰姆

Layout Consideration2SL嘉泰姆
- Keep the switching nodes (UGATE, LGATE, BOOT, and PHASE) away from sensitive small signal nodes(VFB,VTTREF, and CS) since these nodes are fast moving signals. Therefore, keep traces to these nodes as short as possible and there should be no other weak signal traces in parallel with theses traces on any layer.2SL嘉泰姆
- The signals going through theses traces have both high dv/dt and high di/dt, with high peak charging and dis-charging current. The traces from the gate drivers to the MOSFETs (UGATE and LGATE) should be short and wide.2SL嘉泰姆
- Place the source of the high-side MOSFET and the drain of the low-side MOSFET as close as possible. Minimiz-ing the impedance with wide layout plane between the two pads reduces the voltage bounce of the node.2SL嘉泰姆

- Decoupling 2SL嘉泰姆

 capacitor, the resistor dividers, boot capacitors, and current limit stetting resistor should be2SL嘉泰姆

CXSD621152SL嘉泰姆

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50002SL嘉泰姆

CXSD621042SL嘉泰姆

TQFN4x4-242SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

22SL嘉泰姆

152SL嘉泰姆

62SL嘉泰姆

252SL嘉泰姆

22SL嘉泰姆

N2SL嘉泰姆

5502SL嘉泰姆

CXSD621052SL嘉泰姆

TQFN4x4-242SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

22SL嘉泰姆

152SL嘉泰姆

62SL嘉泰姆

252SL嘉泰姆

22SL嘉泰姆

N2SL嘉泰姆

5502SL嘉泰姆

CXSD62106|A2SL嘉泰姆

TQFN4x4-42SL嘉泰姆

TQFN3x3-202SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

22SL嘉泰姆

202SL嘉泰姆

32SL嘉泰姆

282SL嘉泰姆

0.752SL嘉泰姆

52SL嘉泰姆

8002SL嘉泰姆

CXSD621072SL嘉泰姆

TQFN3x3-162SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

12SL嘉泰姆

202SL嘉泰姆

1.82SL嘉泰姆

282SL嘉泰姆

0.752SL嘉泰姆

52SL嘉泰姆

4002SL嘉泰姆

CXSD621082SL嘉泰姆

QFN3.5x3.5-142SL嘉泰姆

TQFN3x3-162SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

12SL嘉泰姆

202SL嘉泰姆

1.82SL嘉泰姆

282SL嘉泰姆

0.752SL嘉泰姆

52SL嘉泰姆

4002SL嘉泰姆

CXSD621092SL嘉泰姆

TQFN3x3-162SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

22SL嘉泰姆

202SL嘉泰姆

1.82SL嘉泰姆

282SL嘉泰姆

0.752SL嘉泰姆

52SL嘉泰姆

4002SL嘉泰姆

CXSD621102SL嘉泰姆

QFN3x3-202SL嘉泰姆

TQFN3x3-162SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

22SL嘉泰姆

202SL嘉泰姆

32SL嘉泰姆

282SL嘉泰姆

1.8|1.5|0.52SL嘉泰姆

52SL嘉泰姆

7402SL嘉泰姆

CXSD621112SL嘉泰姆

TQFN4x4-242SL嘉泰姆

|QFN3x3-202SL嘉泰姆

CM2SL嘉泰姆

12SL嘉泰姆

22SL嘉泰姆

152SL嘉泰姆

52SL嘉泰姆

282SL嘉泰姆

0.52SL嘉泰姆

N2SL嘉泰姆

30002SL嘉泰姆

CXSD621122SL嘉泰姆

TDFN3x3-102SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

12SL嘉泰姆

202SL嘉泰姆

1.82SL嘉泰姆

282SL嘉泰姆

0.52SL嘉泰姆

52SL嘉泰姆

2502SL嘉泰姆

CXSD62113|C2SL嘉泰姆

TQFN3x3-202SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

22SL嘉泰姆

152SL嘉泰姆

62SL嘉泰姆

252SL嘉泰姆

22SL嘉泰姆

N2SL嘉泰姆

5502SL嘉泰姆

CXSD62113E2SL嘉泰姆

TQFN 3x3 202SL嘉泰姆

COT2SL嘉泰姆

22SL嘉泰姆

22SL嘉泰姆

112SL嘉泰姆

62SL嘉泰姆

252SL嘉泰姆

22SL嘉泰姆

N2SL嘉泰姆

5502SL嘉泰姆

CXSD621142SL嘉泰姆

TQFN3x3-202SL嘉泰姆

COT2SL嘉泰姆

22SL嘉泰姆

22SL嘉泰姆

112SL嘉泰姆

5.52SL嘉泰姆

252SL嘉泰姆

22SL嘉泰姆

N2SL嘉泰姆

2802SL嘉泰姆

CXSD621152SL嘉泰姆

QFN4x4-242SL嘉泰姆

VM2SL嘉泰姆

22SL嘉泰姆

12SL嘉泰姆

602SL嘉泰姆

3.12SL嘉泰姆

13.22SL嘉泰姆

0.852SL嘉泰姆

122SL嘉泰姆

50002SL嘉泰姆

CXSD62116A|B|C2SL嘉泰姆

SOP-8P2SL嘉泰姆

VM2SL嘉泰姆

12SL嘉泰姆

12SL嘉泰姆

202SL嘉泰姆

2.92SL嘉泰姆

13.22SL嘉泰姆

0.82SL嘉泰姆

122SL嘉泰姆

160002SL嘉泰姆

CXSD621172SL嘉泰姆

SOP-202SL嘉泰姆

VM2SL嘉泰姆

22SL嘉泰姆

22SL嘉泰姆

302SL嘉泰姆

102SL嘉泰姆

13.22SL嘉泰姆

12SL嘉泰姆

122SL嘉泰姆

50002SL嘉泰姆

CXSD621182SL嘉泰姆

TDFN3x3-102SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

12SL嘉泰姆

252SL嘉泰姆

1.82SL嘉泰姆

282SL嘉泰姆

0.72SL嘉泰姆

52SL嘉泰姆

2502SL嘉泰姆

CXSD621192SL嘉泰姆

TQFN3x3-202SL嘉泰姆

COT2SL嘉泰姆

22SL嘉泰姆

12SL嘉泰姆

402SL嘉泰姆

1.82SL嘉泰姆

252SL嘉泰姆

REFIN Setting2SL嘉泰姆

52SL嘉泰姆

7002SL嘉泰姆

CXSD621202SL嘉泰姆

QFN 3x3 202SL嘉泰姆

TQFN 3x3 162SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

22SL嘉泰姆

202SL嘉泰姆

32SL嘉泰姆

282SL嘉泰姆

1.8|1.5 1.35|1.2 0.52SL嘉泰姆

52SL嘉泰姆

8002SL嘉泰姆

CXSD62121A2SL嘉泰姆

TQFN3x3 202SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

22SL嘉泰姆

152SL嘉泰姆

32SL嘉泰姆

282SL嘉泰姆

0.752SL嘉泰姆

52SL嘉泰姆

2202SL嘉泰姆

CXSD62121B2SL嘉泰姆

TQFN3x3 202SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

22SL嘉泰姆

152SL嘉泰姆

32SL嘉泰姆

282SL嘉泰姆

0.752SL嘉泰姆

52SL嘉泰姆

2202SL嘉泰姆

CXSD621212SL嘉泰姆

TQFN3x3-202SL嘉泰姆

COT2SL嘉泰姆

12SL嘉泰姆

22SL嘉泰姆

202SL嘉泰姆

32SL嘉泰姆

282SL嘉泰姆

0.752SL嘉泰姆

52SL嘉泰姆

1802SL嘉泰姆

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