{"id":17646,"date":"2015-04-24T15:25:56","date_gmt":"2015-04-24T07:25:56","guid":{"rendered":"https:\/\/www.ecmos.com.tw\/?p=17646"},"modified":"2025-04-24T17:43:12","modified_gmt":"2025-04-24T09:43:12","slug":"%e6%b8%ac%e8%a9%a6%e7%94%a2%e5%93%81ec3268b%ef%bd%9c30vin-10a-2-outputs-buck-converter","status":"publish","type":"post","link":"https:\/\/www.ecmos.com.tw\/en\/dc-converter-hv-buck\/%e6%b8%ac%e8%a9%a6%e7%94%a2%e5%93%81ec3268b%ef%bd%9c30vin-10a-2-outputs-buck-converter\/","title":{"rendered":"\u6e2c\u8a66\u7522\u54c1EC3268B\uff5c30Vin 10A 2-Outputs Buck Converter"},"content":{"rendered":"\n
\u898f\u683c\u66f8\u4e0b\u8f09<\/div><\/a>\n\n\n\n
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General Description<\/h3>\n\n\n\n

EC3268B is a Synchronous Buck Circuit with two current sense pins suitable for many multi-output applications.
It is designed to allow for operating a wide supply voltage range from 4.5V to 30V.
This IC can operate in both Constant Current (CC) and Constant Voltage (CV) modes.
EC3268B operates as a Buck Circuit providing a wide range of outputs at Constant Voltage (CV) from 4.5V to 30V and the output current as high as 10A or above.
It has a Constant Current (CC) mode so that output current can be set externally and at an accuracy of \u00b14%.
The current mode control and external compensation makes feedback control have good line and load regulation with flexible external design.<\/p>\n\n\n\n

Features<\/h3>\n\n\n\n
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  • Vin: 4.5V to 30V<\/li>\n\n\n\n
  • Vout: 3V to 28V; typical at 5V<\/li>\n\n\n\n
  • Low Dropout Operation: Maximum Duty Cycle at 99.5%<\/li>\n\n\n\n
  • Precision CC\/CV Mode Control<\/li>\n\n\n\n
  • Burst\/PFM Mode for Increased Light Load Efficiency<\/li>\n\n\n\n
  • 2 outputs independent Constant Current setting<\/li>\n\n\n\n
  • Hiccup mode when output voltage below 50% normal output voltage<\/li>\n\n\n\n
  • Protection:
    NMOS peak current limit: accuracy\uff1a~20%Output short protection: reduce input current to less than 20mA (RMS)
    Output FB OVP (125% VFB), only turn off High side MOS.
    Temperature shutdown (OTP)<\/li>\n\n\n\n
  • Adjustable Output Cable Resistance Compensation<\/li>\n\n\n\n
  • Switching Frequency: 125k+25k<\/li>\n\n\n\n
  • Integrated Power MOSFET<\/li>\n\n\n\n
  • QFN32L Package<\/li>\n<\/ul>\n\n\n\n

    Applications<\/h3>\n\n\n\n
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    • USB Power Supplies with PD<\/li>\n\n\n\n
    • High-Brightness Lighting<\/li>\n\n\n\n
    • General-Purpose DC\/DC Application<\/li>\n<\/ul>\n\n\n\n
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