{"id":2116,"date":"2021-12-19T15:42:00","date_gmt":"2021-12-19T07:42:00","guid":{"rendered":"https:\/\/22ya4u4yz3u0.wpsite.pro\/?p=2116"},"modified":"2024-09-10T13:27:26","modified_gmt":"2024-09-10T05:27:26","slug":"ec1742","status":"publish","type":"post","link":"https:\/\/www.ecmos.com.tw\/cn\/dc-converter-buck\/ec1742\/","title":{"rendered":"EC1742\uff5c40Vin 2 Outputs COT Buck Controller"},"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

EC1742-2COT is a DC\/DC Buck Controller with 2 current sense pins suitable for many multi\u00adoutput applications.<\/p>\n\n\n\n

It is designed to allow for operating a wide supply voltage range from 7.5V to 40V.<\/p>\n\n\n\n

It has both high\u00adside and low\u00adside drivers allowing synchronous configuration using two external power\u00adNMOS.<\/p>\n\n\n\n

This IC can operate in both Constant Current (CC) and Constant Voltage (CV) modes. EC1742\u00ad2COT operates as a DC\/DC Buck Controller providing a wide range of outputs at Constant Voltage (CV) from 1.23V to 28V and the output current as high as 10A or above.<\/p>\n\n\n\n

It has a Constant Current(CC) mode so that output current can be set externally and at a accuracy of +\/\u00ad7%.<\/p>\n\n\n\n

The current mode control makes feedback control have good line and load regulation with flexible external design.<\/p>\n\n\n\n

There are 2 independent current limit control pins in addition to the CC setting for added flexibility of driving 2 separate loads.<\/p>\n\n\n\n

Each of the current limits can be set by a sense resistor at 100mV across it. Of course, output peak current limit is working during normal operation..<\/p>\n\n\n\n

Features<\/p>\n\n\n\n

\u25c6Vin: 7.5V to 40V
\u25c6Vout: 3V to 28V; typical at 5V
\u25c6CC\/CV Mode Control
\u25c6Burst\/PFM Mode for Increased Light Load Efficiency
\u25c6Hiccup mode 1\u00ad2S when SCP\/OVP occur
\u25c6Protection
NMOS peak current limit: accuracy\uff1a~20%
Output short protection: reduce input current to less than 20mA(RMS)
OVP(output Over\u00adVoltage Protection)
Output FB short protection
Temperature shut down(OTP).
\u25c6Adjustable Output Cable Resistance Compensation
\u25c6Duty: 0~98%(Toff_min=100ns, Deadtime=25~35ns)
\u25c6Switching Frequency: 150KHz(+\/\u00ad25k)
\u25c6Integrated MOSFET Driver.
\u25c6OVP: When Vfb>120%*VREF, open discharge switch ( Vout1\/2). Discharge current> 50mA
\u25c6QFN\u00ad16 Package<\/p>\n\n\n\n

Applications<\/p>\n\n\n\n

\u25c6Car Charger
\u25c6High\u00adBrightness Lighting
\u25c6General\u00adPurpose DC\/DC Application<\/p>\n\n\n\n

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