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首页 > 产品中心 > 电源管理 > DC降压型芯片 > Buck降压型芯片 >CXSD6299|A电压模式固定300kHz开关频率和同步降压控制器允许宽输入电压为5~12V
CXSD6299|A电压模式固定300kHz开关频率和同步降压控制器允许宽输入电压为5~12V
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CXSD6299|A允许宽输入电压它可以是一个5~12V的电源电压,也可以是两个不同应用的电源电压。上电复位(POR)电路监测VCC电源电压以防止逻辑控制错误。内置数字软启动电路防止输出电压过冲以及限制输入电流。

CXSD6299|A电压模式固定300kHz开关频率和同步降压控制器允许宽输入电压为5~12V
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产品简介

目录5Tt嘉泰姆

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

一,产品概述(General Description)         5Tt嘉泰姆


 The CXSD6299 is a voltage mode, fixed 300kHz-switch-ing frequency,5Tt嘉泰姆
and synchronous buck controller. The CXSD6299 allows wide input voltage5Tt嘉泰姆
that is either a single 5~12V or two supply voltage(s) for various applications.5Tt嘉泰姆
A power-on-reset (POR) circuit monitors the VCC supply voltage to prevent5Tt嘉泰姆
wrong logic controls. A built-in digital soft-start circuit prevents the output5Tt嘉泰姆
voltages from over-shoot as well as limits the input current. An internal 0.8V5Tt嘉泰姆

temperature-compensated reference voltage with high accuracy is designed to 5Tt嘉泰姆

meet the requirement of low out-put voltage applications. The CXSD6299 5Tt嘉泰姆

provides excel-lent output voltage regulations against load current variation.5Tt嘉泰姆

 The controller’s over-current protection monitors the out-put current by5Tt嘉泰姆
using the voltage drops across the RDS(ON)of low-side MOSFET, eliminating5Tt嘉泰姆
the need for a current sensing resistor that features high efficiency and low cost.5Tt嘉泰姆

The CXSD6299 also integrates over-voltage protection (OVP) and under-voltage 5Tt嘉泰姆

protection circuit which moni-tors the FB voltage to prevent the PWM output 5Tt嘉泰姆

from over and under voltage.5Tt嘉泰姆

  The CXSD6299 is available in a simple SOP-8P package5Tt嘉泰姆
二.产品特点(Features)5Tt嘉泰姆


1.)Wide Operation Supply Voltage from 5V to 12V5Tt嘉泰姆
2.)Power-On-Reset Monitoring on VCC5Tt嘉泰姆
3.)Excellent Reference Voltage Regulations5Tt嘉泰姆
     - 0.8V Internal Reference5Tt嘉泰姆
     - ±1% Over-Temperature Range5Tt嘉泰姆
4.)Integrated Soft-Start5Tt嘉泰姆
5.)Automatic PSM/PWM Modes5Tt嘉泰姆
6.)Voltage Mode PWM Operation with 90% (Max.)Duty Cycle5Tt嘉泰姆
7.)Under-Voltage Protection5Tt嘉泰姆
8.)Adjustable Over-Current Protection Threshold5Tt嘉泰姆
- Sensing the RDS(ON) of Low-Side MOSFET5Tt嘉泰姆
9.)Over-Voltage Protection Under-Voltage Protection5Tt嘉泰姆
     Simple SOP-8P Package5Tt嘉泰姆
10.)Lead Free and Green Devices Available (RoHS Compliant)5Tt嘉泰姆
三,应用范围 (Applications)5Tt嘉泰姆


Graphic Cards5Tt嘉泰姆
DSL, Switch HUB5Tt嘉泰姆
Wireless Lan5Tt嘉泰姆
Notebook Computer5Tt嘉泰姆
Mother Board5Tt嘉泰姆
LCD Monitor/TV5Tt嘉泰姆
四.下载产品资料PDF文档 5Tt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5Tt嘉泰姆

 QQ截图20160419174301.jpg5Tt嘉泰姆

 5Tt嘉泰姆

五,产品封装图 (Package)5Tt嘉泰姆


blob.png5Tt嘉泰姆

六.电路原理图5Tt嘉泰姆


blob.png5Tt嘉泰姆
七,功能概述5Tt嘉泰姆


Layout Consideration5Tt嘉泰姆
In any high switching frequency converter, a correct lay-out is important to ensure proper operation of the5Tt嘉泰姆
regulator. With power devices switching at 300kHz,the resulting current transient will cause voltage spike across5Tt嘉泰姆
the interconnecting impedance and parasitic circuit elements. As an example, consider the turn-off transition5Tt嘉泰姆
of the PWM MOSFET. Before turn-off, the MOSFET is car-rying the full load current. During turn-off, current stops5Tt嘉泰姆
flowing in the MOSFET and is free-wheeling by the lower MOSFET and parasitic diode. Any parasitic inductance of5Tt嘉泰姆
the circuit generates a large voltage spike during the switching interval. In general, using short and wide printed5Tt嘉泰姆
circuit traces should minimize interconnecting imped-5Tt嘉泰姆
Layout Consideration (Cont.)5Tt嘉泰姆
ances and the magnitude of voltage spike. And signal and power grounds are to be kept separate till combined5Tt嘉泰姆
using ground plane construction or single point grounding. Figure 8. illustrates the layout, with bold lines5Tt嘉泰姆
indicating high current paths; these traces must be short and wide. Components along the bold lines should be5Tt嘉泰姆
placed lose together. Below is a checklist for your layout:5Tt嘉泰姆
- Keep the switching nodes (UGATE, LGATE, and PHASE) away from sensitive small signal nodes since these5Tt嘉泰姆
nodes are fast moving signals. Therefore, keep traces to these nodes as short as possible.5Tt嘉泰姆
The traces from the gate drivers to the MOSFETs (UG and LG) should be short and wide.5Tt嘉泰姆
- Place the source of the high-side MOSFET and the drain of the low-side MOSFET as close as possible. Minimiz-5Tt嘉泰姆
ing the impedance with wide layout plane between the two pads reduces the voltage bounce of the node.5Tt嘉泰姆
- Decoupling capacitor, compensation component, the resistor dividers, and boot capacitors should be close5Tt嘉泰姆
their pins. (For example, place the decoupling ceramic capacitor near the drain of the high-side MOSFET as5Tt嘉泰姆
close as possible. The bulk capacitors are also placed near the drain).5Tt嘉泰姆
- The input capacitor should be near the drain of the up-per MOSFET; the output capacitor should be near the5Tt嘉泰姆
loads. The input capacitor GND should be close to the output capacitor GND and the lower MOSFET GND.5Tt嘉泰姆
- The drain of the MOSFETs (VIN and PHASE nodes) should be a large plane for heat sinking.5Tt嘉泰姆
- The ROCSET resistance should be placed near the IC as close as possible.5Tt嘉泰姆

八,相关产品                更多同类产品...... 5Tt嘉泰姆


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CXSD62102A5Tt嘉泰姆

TQFN 3x3 165Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

15Tt嘉泰姆

305Tt嘉泰姆

1.85Tt嘉泰姆

285Tt嘉泰姆

0.65Tt嘉泰姆

55Tt嘉泰姆

6005Tt嘉泰姆

CXSD621035Tt嘉泰姆

QFN4x4-245Tt嘉泰姆

VM5Tt嘉泰姆

25Tt嘉泰姆

15Tt嘉泰姆

505Tt嘉泰姆

4.55Tt嘉泰姆

13.25Tt嘉泰姆

0.65Tt嘉泰姆

5~125Tt嘉泰姆

50005Tt嘉泰姆

CXSD621045Tt嘉泰姆

TQFN4x4-245Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

25Tt嘉泰姆

155Tt嘉泰姆

65Tt嘉泰姆

255Tt嘉泰姆

25Tt嘉泰姆

N5Tt嘉泰姆

5505Tt嘉泰姆

CXSD621055Tt嘉泰姆

TQFN4x4-245Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

25Tt嘉泰姆

155Tt嘉泰姆

65Tt嘉泰姆

255Tt嘉泰姆

25Tt嘉泰姆

N5Tt嘉泰姆

5505Tt嘉泰姆

CXSD62106|A5Tt嘉泰姆

TQFN4x4-45Tt嘉泰姆

TQFN3x3-205Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

25Tt嘉泰姆

205Tt嘉泰姆

35Tt嘉泰姆

285Tt嘉泰姆

0.755Tt嘉泰姆

55Tt嘉泰姆

8005Tt嘉泰姆

CXSD621075Tt嘉泰姆

TQFN3x3-165Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

15Tt嘉泰姆

205Tt嘉泰姆

1.85Tt嘉泰姆

285Tt嘉泰姆

0.755Tt嘉泰姆

55Tt嘉泰姆

4005Tt嘉泰姆

CXSD621085Tt嘉泰姆

QFN3.5x3.5-145Tt嘉泰姆

TQFN3x3-165Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

15Tt嘉泰姆

205Tt嘉泰姆

1.85Tt嘉泰姆

285Tt嘉泰姆

0.755Tt嘉泰姆

55Tt嘉泰姆

4005Tt嘉泰姆

CXSD621095Tt嘉泰姆

TQFN3x3-165Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

25Tt嘉泰姆

205Tt嘉泰姆

1.85Tt嘉泰姆

285Tt嘉泰姆

0.755Tt嘉泰姆

55Tt嘉泰姆

4005Tt嘉泰姆

CXSD621105Tt嘉泰姆

QFN3x3-205Tt嘉泰姆

TQFN3x3-165Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

25Tt嘉泰姆

205Tt嘉泰姆

35Tt嘉泰姆

285Tt嘉泰姆

1.8|1.5|0.55Tt嘉泰姆

55Tt嘉泰姆

7405Tt嘉泰姆

CXSD621115Tt嘉泰姆

TQFN4x4-245Tt嘉泰姆

|QFN3x3-205Tt嘉泰姆

CM5Tt嘉泰姆

15Tt嘉泰姆

25Tt嘉泰姆

155Tt嘉泰姆

55Tt嘉泰姆

285Tt嘉泰姆

0.55Tt嘉泰姆

N5Tt嘉泰姆

30005Tt嘉泰姆

CXSD621125Tt嘉泰姆

TDFN3x3-105Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

15Tt嘉泰姆

205Tt嘉泰姆

1.85Tt嘉泰姆

285Tt嘉泰姆

0.55Tt嘉泰姆

55Tt嘉泰姆

2505Tt嘉泰姆

CXSD62113|C5Tt嘉泰姆

TQFN3x3-205Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

25Tt嘉泰姆

155Tt嘉泰姆

65Tt嘉泰姆

255Tt嘉泰姆

25Tt嘉泰姆

N5Tt嘉泰姆

5505Tt嘉泰姆

CXSD62113E5Tt嘉泰姆

TQFN 3x3 205Tt嘉泰姆

COT5Tt嘉泰姆

25Tt嘉泰姆

25Tt嘉泰姆

115Tt嘉泰姆

65Tt嘉泰姆

255Tt嘉泰姆

25Tt嘉泰姆

N5Tt嘉泰姆

5505Tt嘉泰姆

CXSD621145Tt嘉泰姆

TQFN3x3-205Tt嘉泰姆

COT5Tt嘉泰姆

25Tt嘉泰姆

25Tt嘉泰姆

115Tt嘉泰姆

5.55Tt嘉泰姆

255Tt嘉泰姆

25Tt嘉泰姆

N5Tt嘉泰姆

2805Tt嘉泰姆

CXSD621155Tt嘉泰姆

QFN4x4-245Tt嘉泰姆

VM5Tt嘉泰姆

25Tt嘉泰姆

15Tt嘉泰姆

605Tt嘉泰姆

3.15Tt嘉泰姆

13.25Tt嘉泰姆

0.855Tt嘉泰姆

125Tt嘉泰姆

50005Tt嘉泰姆

CXSD62116A|B|C5Tt嘉泰姆

SOP-8P5Tt嘉泰姆

VM5Tt嘉泰姆

15Tt嘉泰姆

15Tt嘉泰姆

205Tt嘉泰姆

2.95Tt嘉泰姆

13.25Tt嘉泰姆

0.85Tt嘉泰姆

125Tt嘉泰姆

160005Tt嘉泰姆

CXSD621175Tt嘉泰姆

SOP-205Tt嘉泰姆

VM5Tt嘉泰姆

25Tt嘉泰姆

25Tt嘉泰姆

305Tt嘉泰姆

105Tt嘉泰姆

13.25Tt嘉泰姆

15Tt嘉泰姆

125Tt嘉泰姆

50005Tt嘉泰姆

CXSD621185Tt嘉泰姆

TDFN3x3-105Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

15Tt嘉泰姆

255Tt嘉泰姆

1.85Tt嘉泰姆

285Tt嘉泰姆

0.75Tt嘉泰姆

55Tt嘉泰姆

2505Tt嘉泰姆

CXSD621195Tt嘉泰姆

TQFN3x3-205Tt嘉泰姆

COT5Tt嘉泰姆

25Tt嘉泰姆

15Tt嘉泰姆

405Tt嘉泰姆

1.85Tt嘉泰姆

255Tt嘉泰姆

REFIN Setting5Tt嘉泰姆

55Tt嘉泰姆

7005Tt嘉泰姆

CXSD621205Tt嘉泰姆

QFN 3x3 205Tt嘉泰姆

TQFN 3x3 165Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

25Tt嘉泰姆

205Tt嘉泰姆

35Tt嘉泰姆

285Tt嘉泰姆

1.8|1.5 1.35|1.2 0.55Tt嘉泰姆

55Tt嘉泰姆

8005Tt嘉泰姆

CXSD62121A5Tt嘉泰姆

TQFN3x3 205Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

25Tt嘉泰姆

155Tt嘉泰姆

35Tt嘉泰姆

285Tt嘉泰姆

0.755Tt嘉泰姆

55Tt嘉泰姆

2205Tt嘉泰姆

CXSD62121B5Tt嘉泰姆

TQFN3x3 205Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

25Tt嘉泰姆

155Tt嘉泰姆

35Tt嘉泰姆

285Tt嘉泰姆

0.755Tt嘉泰姆

55Tt嘉泰姆

2205Tt嘉泰姆

CXSD621215Tt嘉泰姆

TQFN3x3-205Tt嘉泰姆

COT5Tt嘉泰姆

15Tt嘉泰姆

25Tt嘉泰姆

205Tt嘉泰姆

35Tt嘉泰姆

285Tt嘉泰姆

0.755Tt嘉泰姆

55Tt嘉泰姆

1805Tt嘉泰姆

 5Tt嘉泰姆

 5Tt嘉泰姆

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