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CXSD61051 synchronous step down regulator CC control from a high voltage input supply 3.5A continuou
发表时间:2020-04-09浏览次数:88
CXSD61051 synchronous step down regulator CC control from a high voltage input supply 3.5A continuou
 

目录Pyc嘉泰姆

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

 Pyc嘉泰姆

一,产品概述(General Description)   Pyc嘉泰姆

        The CXSD61051 is a synchronous step down regulator with CC control from a high voltage input supply. Operating with an input voltagePyc嘉泰姆
range of 8V ~ 30V, the CXSD61051 achieves 3.5A continuous output current with excellent load and line regulation. The switching  frequency is programmable from 100KHz to 500KHz and the synchronous architecturePyc嘉泰姆
provides for highly efficient designs. Current  mode operation provides fast transient response and eases loop stabilization.Pyc嘉泰姆

         The CXSD61051 requires a minimum number of readily available standard external components. Other features include cable compensation programmable current limit and thermal shutdown.Pyc嘉泰姆

        The CXSD61051 converters are available in the industry standard SOP8-PP packages       Pyc嘉泰姆

二.产品特点(Features)Pyc嘉泰姆

Wide Input Voltage Range: 8V ~ 30VPyc嘉泰姆

Up to 93% EfficiencyPyc嘉泰姆

Programmable Switching Frequency up to 500KHzPyc嘉泰姆

No Loop Compensation RequiredPyc嘉泰姆

CC/CV controlPyc嘉泰姆

Programmable CC CurrentPyc嘉泰姆

Thermal ShutdownPyc嘉泰姆

Available in SOP8-PP PackagePyc嘉泰姆

三,应用范围 (Applications) Pyc嘉泰姆

Car Charger / AdaptorPyc嘉泰姆

LED DriverPyc嘉泰姆

Pre-Regulator for Linear RegulatorsPyc嘉泰姆

Distributed Power SystemsPyc嘉泰姆

Battery ChargerCar Charger / AdaptorPyc嘉泰姆

LED DriverPyc嘉泰姆

Pre-Regulator for Linear RegulatorsPyc嘉泰姆

Distributed Power SystemsPyc嘉泰姆

Battery ChargerPyc嘉泰姆

四,产品封装图 (Package)Pyc嘉泰姆
Pyc嘉泰姆

PINPyc嘉泰姆

NAMEPyc嘉泰姆

DESCRIPTIONPyc嘉泰姆

1Pyc嘉泰姆

FBPyc嘉泰姆

FeedbackPyc嘉泰姆

2Pyc嘉泰姆

ILIMPyc嘉泰姆

CC Current SettngPyc嘉泰姆

3Pyc嘉泰姆

ENPyc嘉泰姆

EnablePyc嘉泰姆

4Pyc嘉泰姆

PDRIPyc嘉泰姆

PMOS Gate DrivePyc嘉泰姆

5Pyc嘉泰姆

NDRIPyc嘉泰姆

NMOS Gate DrivePyc嘉泰姆

6Pyc嘉泰姆

VINPyc嘉泰姆

Input Supply VoltagePyc嘉泰姆

7Pyc嘉泰姆

RTPyc嘉泰姆

Frequency settingPyc嘉泰姆

8Pyc嘉泰姆

SWPyc嘉泰姆

Switch NodePyc嘉泰姆

9Pyc嘉泰姆

GNDPyc嘉泰姆

GroundPyc嘉泰姆

五,电路原理图Pyc嘉泰姆


blob.pngPyc嘉泰姆

六, 产品PCBPyc嘉泰姆
(略)Pyc嘉泰姆
七.产品BOM  Pyc嘉泰姆
  (略)Pyc嘉泰姆
八.产品PDF文档 Pyc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Pyc嘉泰姆

 QQ截图20160419174301.jpgPyc嘉泰姆

九,功能概述Pyc嘉泰姆


Application Information Pyc嘉泰姆
The CXSD61051 operates by a constant frequency, current mode architecture. The output voltage is setPyc嘉泰姆
by an external divider returned to the FB pin. An error amplifier compares the divided output voltage withPyc嘉泰姆
a reference voltage of 1.21V and adjusts the peak inductor current accordingly. Pyc嘉泰姆
Thermal ProtectionPyc嘉泰姆
The total power dissipation in CXSD61051 is limited by a thermal protection circuit. When the devicePyc嘉泰姆
temperature rises to approximately +160°C, this circuit turns off the output, allowing the IC to cool. ThePyc嘉泰姆
thermal protection circuit can protect the device from being damaged by overheating in the event of faultPyc嘉泰姆
conditions. Continuously running the CXSD61051 into thermal shutdown degrades device reliability. Pyc嘉泰姆
Current LimitPyc嘉泰姆
Current limit detection occurs during the off-time by monitoring the current through the low-side switchPyc嘉泰姆
using an external resistor, RLIM. The current limit value is defined by RLIM. If during the off-time thePyc嘉泰姆
current in the low-side switch exceeds the user defined current limit value, the next on-time cycle isPyc嘉泰姆
immediately terminated. Current sensing is achieved by comparing the voltage across the low side FETPyc嘉泰姆
with the voltage across the current limit set resistor RLIM. For example, the current limit value is 4.5A byPyc嘉泰姆
the RLIM =100K. The current limit value rises when the set resistor RLIM rises. The maximum outputPyc嘉泰姆
current is set by RLIM: RLIM (kΩ) = 1500 · IMAX (A) / RDS_PMOS (mΩ). Pyc嘉泰姆
Oscillator FrequencyPyc嘉泰姆
The CXSD61051 oscillator frequency is set by a single external resistor connected between the RT pin andPyc嘉泰姆
the GND pin. The resistor should be located very close to the device and connected directly to the pinsPyc嘉泰姆
of the IC (RT and GND). An internal amplifier holds the RT pin at a fixed voltage typically 0.6V. ThePyc嘉泰姆
oscillator frequency rises when the resistor RT falls. To determine the timing resistance for a givenPyc嘉泰姆
switching frequency, use the equation below:Pyc嘉泰姆
RT(kΩ)= 22000 /fOSC(kHz) Pyc嘉泰姆
Setting Output VoltagePyc嘉泰姆
The output voltage is set with a resistor divider from the output node to the FB pin. It is recommended toPyc嘉泰姆
use divider resistors with 1% tolerance or better. To improve efficiency at very light loads consider usingPyc嘉泰姆
larger value resistors. If the values are too high the regulator is more susceptible to noise and voltagePyc嘉泰姆
errors from the FB input current are noticeable. For most applications, a resistor in the 10kΩ to 1MΩPyc嘉泰姆
range is suggested for R3. R2 is then given by:Pyc嘉泰姆
R2 = R3 · [(VOUT / VREF) – 1]Pyc嘉泰姆
where VREF is 1.21V.Pyc嘉泰姆
Output Cable Resistance CompensationPyc嘉泰姆
To compensate for resistive voltage drop across the charger's output cable, the CXSD61051 integrates aPyc嘉泰姆
simple, user-programmable cable voltage drop compensation using the impedance at the FB pin.Pyc嘉泰姆
Choose the proper feedback resistance values for cable compensation refer to the curve in Figure 1.Pyc嘉泰姆
The delta VOUT voltage rises when the feedback resistance R3 value rises, use the equation belowPyc嘉泰姆
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93%Pyc嘉泰姆

15mAPyc嘉泰姆

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1.21VPyc嘉泰姆

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93%Pyc嘉泰姆

15mAPyc嘉泰姆

110uAPyc嘉泰姆

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8V-35VPyc嘉泰姆

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3.2A/带可调限流保护Pyc嘉泰姆

1.21VPyc嘉泰姆

100-500K可调Pyc嘉泰姆

93%Pyc嘉泰姆

15mAPyc嘉泰姆

110uAPyc嘉泰姆

SOP-8Pyc嘉泰姆

CXSD61047Pyc嘉泰姆

4.6-22VPyc嘉泰姆

可调输出Pyc嘉泰姆

3.0APyc嘉泰姆

0.923VPyc嘉泰姆

340KPyc嘉泰姆

95%Pyc嘉泰姆

55uAPyc嘉泰姆

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0.925VPyc嘉泰姆

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93%Pyc嘉泰姆

1.3mAPyc嘉泰姆

0.3uAPyc嘉泰姆

ESOP8Pyc嘉泰姆

CXSD61047BPyc嘉泰姆

4.5V-23VPyc嘉泰姆

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3.5APyc嘉泰姆

0.925VPyc嘉泰姆

340KPyc嘉泰姆

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2.5mAPyc嘉泰姆

 

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95%Pyc嘉泰姆

14mAPyc嘉泰姆

100uAPyc嘉泰姆

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3.6-40VPyc嘉泰姆

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440KPyc嘉泰姆

94%Pyc嘉泰姆

74uAPyc嘉泰姆

0.07uAPyc嘉泰姆

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600KPyc嘉泰姆

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400uAPyc嘉泰姆

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600KPyc嘉泰姆

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800uAPyc嘉泰姆

 

SOT-26Pyc嘉泰姆

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3.3-17VPyc嘉泰姆

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2.0APyc嘉泰姆

0.6VPyc嘉泰姆

600KPyc嘉泰姆

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400uAPyc嘉泰姆

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1.2APyc嘉泰姆

0.8VPyc嘉泰姆

1.4MPyc嘉泰姆

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600uAPyc嘉泰姆

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