The CXSD6299A is a voltage mode, fixed 300kHz-switch-ing frequency, and synchronous buck controller. CXSD6299A allows wide input voltage that is either a single 5~12V or two supply voltage(s) for

发布时间:2020-04-06 09:43:38 浏览次数:712 作者:嘉泰姆 来源:1
摘要:The CXSD6299A is a voltage mode, fixed 300kHz-switch-ing frequency, and synchronous buck controller. CXSD6299A allows wide input voltage that is either a single 5~12V or two supply voltage(s) for

目录hM2嘉泰姆

1.产品概述                       2.产品特点
3.应用范围                       4.下载产品资料PDF文档 
5.产品封装图</span>                     6.电路原理图</span>                   
7.
功能概述
                        8.相关产品hM2嘉泰姆

,产品概述(General Description)         hM2嘉泰姆


 The CXSD6299 is a voltage mode, fixed 300kHz-switch-ing frequency,
and synchronous buck controller. The CXSD6299 allows wide input voltage
that is either a single 5~12V or two supply voltage(s) for various applications.
A power-on-reset (POR) circuit monitors the VCC supply voltage to prevent
wrong logic controls. A built-in digital soft-start circuit prevents the output
voltages from over-shoot as well as limits the input current. An internal 0.8V
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temperature-compensated reference voltage with high accuracy is designed to hM2嘉泰姆

meet the requirement of low out-put voltage applications. The CXSD6299 hM2嘉泰姆

provides excel-lent output voltage regulations against load current variation.hM2嘉泰姆

 The controller’s over-current protection monitors the out-put current by
using the voltage drops across the RDS(ON)of low-side MOSFET, eliminating
the need for a current sensing resistor that features high efficiency and low cost.
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The CXSD6299 also integrates over-voltage protection (OVP) and under-voltage hM2嘉泰姆

protection circuit which moni-tors the FB voltage to prevent the PWM output hM2嘉泰姆

from over and under voltage.hM2嘉泰姆

  The CXSD6299 is available in a simple SOP-8P package
二</span>.产品特点(Features)hM2嘉泰姆


1.)Wide Operation Supply Voltage from 5V to 12V
2.)Power-On-Reset Monitoring on VCC
3.)Excellent Reference Voltage Regulations
     - 0.8V Internal Reference
     - ±1% Over-Temperature Range

4.)Integrated Soft-Start
5.)Automatic PSM/PWM Modes
6.)Voltage Mode PWM Operation with 90% (Max.)Duty Cycle
7.)Under-Voltage Protection
8.)Adjustable Over-Current Protection Threshold
- Sensing the RDS(ON) of Low-Side MOSFET

9.)Over-Voltage Protection Under-Voltage Protection
     Simple SOP-8P Package

10.)Lead Free and Green Devices Available (RoHS Compliant)
三</span>,应用范围 (Applications)hM2嘉泰姆


Graphic Cards
DSL, Switch HUB
Wireless Lan
Notebook Computer
Mother Board

LCD Monitor/TV
四.下载产品资料PDF文档 hM2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</span>!</span>hM2嘉泰姆

 QQ截图20160419174301.jpghM2嘉泰姆

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五,产品封装图 (Package)hM2嘉泰姆


blob.pnghM2嘉泰姆

六.电路原理图</span>hM2嘉泰姆


blob.png
七</span>,功能概述hM2嘉泰姆


Layout Consideration
In any high switching frequency converter, a correct lay-out is important to ensure proper operation of the
regulator. With power devices switching at 300kHz,the resulting current transient will cause voltage spike across
the interconnecting impedance and parasitic circuit elements. As an example, consider the turn-off transition
of the PWM MOSFET. Before turn-off, the MOSFET is car-rying the full load current. During turn-off, current stops
flowing in the MOSFET and is free-wheeling by the lower MOSFET and parasitic diode. Any parasitic inductance of
the circuit generates a large voltage spike during the switching interval. In general, using short and wide printed
circuit traces should minimize interconnecting imped-
Layout Consideration (Cont.)
ances and the magnitude of voltage spike. And signal and power grounds are to be kept separate till combined
using ground plane construction or single point grounding. Figure 8. illustrates the layout, with bold lines
indicating high current paths; these traces must be short and wide. Components along the bold lines should be
placed lose together. Below is a checklist for your layout:
- Keep the switching nodes (UGATE, LGATE, and PHASE) away from sensitive small signal nodes since these
nodes are fast moving signals. Therefore, keep traces to these nodes as short as possible.
The traces from the gate drivers to the MOSFETs (UG and LG) should be short and wide.
- 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.
- Decoupling capacitor, compensation component, the resistor dividers, and boot capacitors should be close
their pins. (For example, place the decoupling ceramic capacitor near the drain of the high-side MOSFET as
close as possible. The bulk capacitors are also placed near the drain).
- The input capacitor should be near the drain of the up-per MOSFET; the output capacitor should be near the
loads. The input capacitor GND should be close to the output capacitor GND and the lower MOSFET GND.
- The drain of the MOSFETs (VIN and PHASE nodes) should be a large plane for heat sinking.
- The ROCSET resistance should be placed near the IC as close as possible.
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25hM2嘉泰姆

2hM2嘉泰姆

NhM2嘉泰姆

550hM2嘉泰姆

CXSD62106|AhM2嘉泰姆

TQFN4x4-4hM2嘉泰姆

TQFN3x3-20hM2嘉泰姆

COThM2嘉泰姆

1hM2嘉泰姆

2hM2嘉泰姆

20hM2嘉泰姆

3hM2嘉泰姆

28hM2嘉泰姆

0.75hM2嘉泰姆

5hM2嘉泰姆

800hM2嘉泰姆

CXSD62107hM2嘉泰姆

TQFN3x3-16hM2嘉泰姆

COThM2嘉泰姆

1hM2嘉泰姆

1hM2嘉泰姆

20hM2嘉泰姆

1.8hM2嘉泰姆

28hM2嘉泰姆

0.75hM2嘉泰姆

5hM2嘉泰姆

400hM2嘉泰姆

CXSD62108hM2嘉泰姆

QFN3.5x3.5-14hM2嘉泰姆

TQFN3x3-16hM2嘉泰姆

COThM2嘉泰姆

1hM2嘉泰姆

1hM2嘉泰姆

20hM2嘉泰姆

1.8hM2嘉泰姆

28hM2嘉泰姆

0.75hM2嘉泰姆

5hM2嘉泰姆

400hM2嘉泰姆

CXSD62109hM2嘉泰姆

TQFN3x3-16hM2嘉泰姆

COThM2嘉泰姆

1hM2嘉泰姆

2hM2嘉泰姆

20hM2嘉泰姆

1.8hM2嘉泰姆

28hM2嘉泰姆

0.75hM2嘉泰姆

5hM2嘉泰姆

400hM2嘉泰姆

CXSD62110hM2嘉泰姆

QFN3x3-20hM2嘉泰姆

TQFN3x3-16hM2嘉泰姆

COThM2嘉泰姆

1hM2嘉泰姆

2hM2嘉泰姆

20hM2嘉泰姆

3hM2嘉泰姆

28hM2嘉泰姆

1.8|1.5|0.5hM2嘉泰姆

5hM2嘉泰姆

740hM2嘉泰姆

CXSD62111hM2嘉泰姆

TQFN4x4-24hM2嘉泰姆

|QFN3x3-20hM2嘉泰姆

CMhM2嘉泰姆

1hM2嘉泰姆

2hM2嘉泰姆

15hM2嘉泰姆

5hM2嘉泰姆

28hM2嘉泰姆

0.5hM2嘉泰姆

NhM2嘉泰姆

3000hM2嘉泰姆

CXSD62112hM2嘉泰姆

TDFN3x3-10hM2嘉泰姆

COThM2嘉泰姆

1hM2嘉泰姆

1hM2嘉泰姆

20hM2嘉泰姆

1.8hM2嘉泰姆

28hM2嘉泰姆

0.5hM2嘉泰姆

5hM2嘉泰姆

250hM2嘉泰姆

CXSD62113|ChM2嘉泰姆

TQFN3x3-20hM2嘉泰姆

COThM2嘉泰姆

1hM2嘉泰姆

2hM2嘉泰姆

15hM2嘉泰姆

6hM2嘉泰姆

25hM2嘉泰姆

2hM2嘉泰姆

NhM2嘉泰姆

550hM2嘉泰姆

CXSD62113EhM2嘉泰姆

TQFN 3x3 20hM2嘉泰姆

COThM2嘉泰姆

2hM2嘉泰姆

2hM2嘉泰姆

11hM2嘉泰姆

6hM2嘉泰姆

25hM2嘉泰姆

2hM2嘉泰姆

NhM2嘉泰姆

550hM2嘉泰姆

CXSD62114hM2嘉泰姆

TQFN3x3-20hM2嘉泰姆

COThM2嘉泰姆

2hM2嘉泰姆

2hM2嘉泰姆

11hM2嘉泰姆

5.5hM2嘉泰姆

25hM2嘉泰姆

2hM2嘉泰姆

NhM2嘉泰姆

280hM2嘉泰姆

CXSD62115hM2嘉泰姆

QFN4x4-24hM2嘉泰姆

VMhM2嘉泰姆

2hM2嘉泰姆

1hM2嘉泰姆

60hM2嘉泰姆

3.1hM2嘉泰姆

13.2hM2嘉泰姆

0.85hM2嘉泰姆

12hM2嘉泰姆

5000hM2嘉泰姆

CXSD62116A|B|ChM2嘉泰姆

SOP-8PhM2嘉泰姆

VMhM2嘉泰姆

1hM2嘉泰姆

1hM2嘉泰姆

20hM2嘉泰姆

2.9hM2嘉泰姆

13.2hM2嘉泰姆

0.8hM2嘉泰姆

12hM2嘉泰姆

16000hM2嘉泰姆

CXSD62117hM2嘉泰姆

SOP-20hM2嘉泰姆

VMhM2嘉泰姆

2hM2嘉泰姆

2hM2嘉泰姆

30hM2嘉泰姆

10hM2嘉泰姆

13.2hM2嘉泰姆

1hM2嘉泰姆

12hM2嘉泰姆

5000hM2嘉泰姆

CXSD62118hM2嘉泰姆

TDFN3x3-10hM2嘉泰姆

COThM2嘉泰姆

1hM2嘉泰姆

1hM2嘉泰姆

25hM2嘉泰姆

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0.7hM2嘉泰姆

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250hM2嘉泰姆

CXSD62119hM2嘉泰姆

TQFN3x3-20hM2嘉泰姆

COThM2嘉泰姆

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1hM2嘉泰姆

40hM2嘉泰姆

1.8hM2嘉泰姆

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REFIN SettinghM2嘉泰姆

5hM2嘉泰姆

700hM2嘉泰姆

CXSD62120hM2嘉泰姆

QFN 3x3 20hM2嘉泰姆

TQFN 3x3 16hM2嘉泰姆

COThM2嘉泰姆

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3hM2嘉泰姆

28hM2嘉泰姆

1.8|1.5 1.35|1.2 0.5hM2嘉泰姆

5hM2嘉泰姆

800hM2嘉泰姆

CXSD62121AhM2嘉泰姆

TQFN3x3 20hM2嘉泰姆

COThM2嘉泰姆

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15hM2嘉泰姆

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28hM2嘉泰姆

0.75hM2嘉泰姆

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220hM2嘉泰姆

CXSD62121BhM2嘉泰姆

TQFN3x3 20hM2嘉泰姆

COThM2嘉泰姆

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2hM2嘉泰姆

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28hM2嘉泰姆

0.75hM2嘉泰姆

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CXSD62121hM2嘉泰姆

TQFN3x3-20hM2嘉泰姆

COThM2嘉泰姆

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2hM2嘉泰姆

20hM2嘉泰姆

3hM2嘉泰姆

28hM2嘉泰姆

0.75hM2嘉泰姆

5hM2嘉泰姆

180hM2嘉泰姆


hM2嘉泰姆


hM2嘉泰姆


hM2嘉泰姆

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