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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 >CXSD61022A wide input voltage, high efficiency CC step-down DC/DC converter that operates in either
CXSD61022A wide input voltage, high efficiency CC step-down DC/DC converter that operates in either
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CXSD61022A wide input voltage, high efficiency CC step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode

CXSD61022A wide input voltage, high efficiency CC step-down DC/DC converter that operates in either
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产品简介

目录UCE嘉泰姆

1.产品概述                       2.产品特点UCE嘉泰姆
3.应用范围                       4.产品封装图UCE嘉泰姆
5.电路原理图                   6.产品PCB                   UCE嘉泰姆
7.产品BOM                      8.产品PDF文档 UCE嘉泰姆
9.功能概述                      10.
相关产品UCE嘉泰姆

 

一,产品概述(General Description)     UCE嘉泰姆


    CXSD61022A is a wide input voltage, high efficiency CC step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode. CXSD61022A provides up to 2.5A output current at 125kHz switching frequency.UCE嘉泰姆
      CXSD61022A provides OVP pin for output over voltage protection.Protection features include cycle-by-cycle current limit,thermal shutdown, and frequency foldback at short circuit. The devices are available in a SOP-8EP package and require very few external devices for operation.UCE嘉泰姆
二.产品特点(Features)UCE嘉泰姆


42V Input Voltage SurgeUCE嘉泰姆
40V Steady State OperationUCE嘉泰姆
Up to 2.5A output currentUCE嘉泰姆
Output Voltage 2.5V to 10VUCE嘉泰姆
Resistor ProgrammableUCE嘉泰姆

− Current Limit from 1A to 2.5AUCE嘉泰姆
− Cable Compensation from 0Ω to 0.4ΩUCE嘉泰姆

±7.5% CC Accuracy
− Compensation of Input /Output Voltage Change
− Temperature CompensationUCE嘉泰姆
2% Feedback Voltage AccuracyUCE嘉泰姆
Up to 94% EfficiencyUCE嘉泰姆
125kHz Switching Frequency Eases EMI DesignUCE嘉泰姆
Advanced Feature SetUCE嘉泰姆
− Integrated Soft Start
− Thermal ShutdownUCE嘉泰姆
− Protection Against Shorted ISET PinUCE嘉泰姆
Patented E-LTI technology improvesUCE嘉泰姆
transient response.UCE嘉泰姆
SOP-8EP PackageUCE嘉泰姆
三,应用范围 (Applications)UCE嘉泰姆


 Car Charger/ AdaptorUCE嘉泰姆
Rechargeable Portable DevicesUCE嘉泰姆
General-Purpose CC/CV SupplyUCE嘉泰姆
四,产品封装图 (Package)UCE嘉泰姆
blob.pngUCE嘉泰姆

PinUCE嘉泰姆
No.UCE嘉泰姆

NAMEUCE嘉泰姆

DescriptionUCE嘉泰姆

1UCE嘉泰姆

HSBUCE嘉泰姆

High Side Bias Pin. This provides power to the internal high-side MOSFET gate driver.Connect a 100nF capacitor from HSB pin to SW pin.UCE嘉泰姆

2UCE嘉泰姆

INUCE嘉泰姆

Power Supply Input. Bypass this pin with a 10μF ceramic capacitor to GND, placed as close to the IC as possible.UCE嘉泰姆

3UCE嘉泰姆

SWUCE嘉泰姆

Power Switching Output to External Inductor.UCE嘉泰姆

4UCE嘉泰姆

GNDUCE嘉泰姆

Ground. Connect this pin to a large PCB copper area for best heat dissipation. Return FB,COMP, and ISET to this GND, and connect this GND to power GND at a single point for best noise immunity.UCE嘉泰姆

5UCE嘉泰姆

FBUCE嘉泰姆

Feedback Input. The voltage at this pin is regulated to 0.800V. Connect to the resistor divider between output and GND to set the output voltage.UCE嘉泰姆

6UCE嘉泰姆

LCOMPUCE嘉泰姆

Output cable resistance compensation.UCE嘉泰姆

7UCE嘉泰姆

OVP/ENUCE嘉泰姆

CXSD61022A: OVP input. If the voltage at this pin exceeds 1.25V, the IC shuts down high-side switch.CXSD61022B: EN input. If the voltage at this pin is below 1.5V, the IC remains shut-off.UCE嘉泰姆

8UCE嘉泰姆

ISETUCE嘉泰姆

Output Current Setting Pin. Connect a resistor from ISET to GND to program the out putcurrent.UCE嘉泰姆

 

ExposedUCE嘉泰姆
PadUCE嘉泰姆

Heat Dissipation Pad. Connect this exposed pad to large ground copper area with copper and vias.UCE嘉泰姆

五,电路原理图UCE嘉泰姆
blob.pngUCE嘉泰姆

六, 产品PCBUCE嘉泰姆
blob.pngUCE嘉泰姆

七.产品BOM  UCE嘉泰姆
  (略)UCE嘉泰姆
八.产品PDF文档 UCE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UCE嘉泰姆

 QQ截图20160419174301.jpgUCE嘉泰姆

九,功能概述UCE嘉泰姆


CV/CC Loop RegulationUCE嘉泰姆
As seen in Functional Block Diagram, the CXSD61022A isUCE嘉泰姆
a Constant On Time (COT) mode pulse widthUCE嘉泰姆
modulation (PWM) converter with CC and CV control.UCE嘉泰姆
The converter operates as follows:UCE嘉泰姆
The main loop of CXSD61022A uses a COT mode controlUCE嘉泰姆
which provides a very fast transient response with noUCE嘉泰姆
external component and no need loop compensation.UCE嘉泰姆
The CXSD61022A also adopt a proprietary circuit thatUCE嘉泰姆
ensures enable use very low ESR capacitor to maintainUCE嘉泰姆
loop stability.UCE嘉泰姆
turns on. The high side MOSFET is turn off afterUCE嘉泰姆
internal one shot timer expires. This one shot time isUCE嘉泰姆
set by VIN and VOUT to maintain a constant frequency.UCE嘉泰姆
The one shot timer is reset and high side MOSFETUCE嘉泰姆
turns on again when feedback voltage falls below theUCE嘉泰姆
reference voltage. An internal ramp is generating toUCE嘉泰姆
simulate output ripple, eliminating the need for ESRUCE嘉泰姆
induced output ripple from COT control mode. WhenUCE嘉泰姆
high side MOSFET turns off, the SW node of theUCE嘉泰姆
inductor swings to a diode voltage below ground,UCE嘉泰姆
causing the inductor current to decrease and magneticUCE嘉泰姆
energy to be transferred to output. This state continuesUCE嘉泰姆
until the next cycle start againUCE嘉泰姆
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150KUCE嘉泰姆

90%UCE嘉泰姆

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40VUCE嘉泰姆

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94%UCE嘉泰姆

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150KUCE嘉泰姆

93%UCE嘉泰姆

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45VUCE嘉泰姆

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1.23VUCE嘉泰姆

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93%UCE嘉泰姆

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CXSD61012UCE嘉泰姆

40VUCE嘉泰姆

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1.18VUCE嘉泰姆

110KUCE嘉泰姆

93%UCE嘉泰姆

10mAUCE嘉泰姆

CXSD61011UCE嘉泰姆

42VUCE嘉泰姆

可调输出UCE嘉泰姆

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0.8VUCE嘉泰姆

50-500KUCE嘉泰姆

91%UCE嘉泰姆

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40VUCE嘉泰姆

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45VUCE嘉泰姆

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150KUCE嘉泰姆

83%UCE嘉泰姆

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4.75V-40VUCE嘉泰姆

可调输出UCE嘉泰姆

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550KUCE嘉泰姆

90%UCE嘉泰姆

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