{"product_id":"48v-dc-input-to-12v-output-dc-dc-converter","title":"48V DC Input to 12V Output DC-DC Converter","description":"\u003cp\u003eThis DC\/DC buck regulator project is based on \u003cstrong\u003eLMR38020\u003c\/strong\u003e chip that employs synchronous rectification to achieve high conversion efficiency on a small board. The project operates over a wide input voltage range of \u003cstrong\u003e14V to 48V\u003c\/strong\u003e to provide a regulated 12V\u003csub\u003edc\u003c\/sub\u003e output at \u003cstrong\u003e400kHz\u003c\/strong\u003e switching frequency. The output voltage has better than 1.5% setpoint accuracy. Enable pin is connected to VIN using resistor R2. The device has built-in protection features such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTightly regulated output voltage of 12 V with 1.5% setpoint accuracy\u003c\/li\u003e\n\u003cli\u003eLoad Current 1Amp (Can provide Up to 2A), limited due to PCB thermal area.\u003c\/li\u003e\n\u003cli\u003eWide input voltage operating range of 14 V to 48 V\u003c\/li\u003e\n\u003cli\u003e98% maximum duty cycle\u003c\/li\u003e\n\u003cli\u003eOperating Frequency 400Khz\u003c\/li\u003e\n\u003cli\u003eForce PWM operation to achieve low output voltage ripple, tight output voltage regulation at light load\u003c\/li\u003e\n\u003cli\u003eFrequency synchronization to external clock\u003c\/li\u003e\n\u003cli\u003eThermal Shutdown (Threshold 163 Degree Centigrade)\u003c\/li\u003e\n\u003cli\u003eHiccup Mode Short-Circuit Protection\u003c\/li\u003e\n\u003cli\u003eSupports Start-up with Pre-Biased Output\u003c\/li\u003e\n\u003cli\u003eCycle-by-cycle overcurrent protection\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 29.05 X 25.88 MM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe project provides \u003cstrong\u003e12V\u003c\/strong\u003e output with a maximum of \u003cstrong\u003e48V\u003c\/strong\u003e input. The input voltage is limited due to the input capacitor voltage rating. The input and output voltage can be changed with a few component adjustments. The IC has a wide input voltage range. The board can support a higher input power supply. Output also can be altered as per user requirements. Refer to the details below for various options. Also, refer to the datasheet of LMR38020 for more info.\u003c\/p\u003e\n\u003ch3\u003e12V DC Output, 48V DC Input\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOutput Capacitor C2, C3, C4 10uF\/10V Ceramic SMD Size 1210\u003c\/li\u003e\n\u003cli\u003eC5 1nF\/10V Ceramic SMD Size 0805\u003c\/li\u003e\n\u003cli\u003eResistor R5 100K 1% SMD Size 0805 (Output Feedback Divider Resistor)\u003c\/li\u003e\n\u003cli\u003eResistor R4 9.09K 1% SMD Size 0805 (Output Feedback Divider Resistor)\u003c\/li\u003e\n\u003cli\u003eResistor R3 64.5K 1% SMD Size (Frequency) 400Khz\u003c\/li\u003e\n\u003cli\u003eInductor L1 33uH\/5Amp 12x12mm SMD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e5V DC Output, 48V DC Input\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOutput Capacitor C2, C3, C4 22uF\/10V Ceramic SMD Size 1210\u003c\/li\u003e\n\u003cli\u003eC5 1nF\/10V Ceramic SMD Size 0805\u003c\/li\u003e\n\u003cli\u003eResistor R5 100K 1% SMD Size 0805 (Output feedback Divider Resistor)\u003c\/li\u003e\n\u003cli\u003eResistor R4 24.9K 1% SMD Size 0805 (Output feedback Divider Resistor)\u003c\/li\u003e\n\u003cli\u003eResistor R3 64.5K 1% SMD Size 0805 (Frequency) 400Khz\u003c\/li\u003e\n\u003cli\u003eInductor L1 15uH\/5Amp 12x12mm SMD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e24V DC Output, 48V DC Input\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOutput Capacitor C2, C3, C4 10uF\/10V Ceramic SMD Size 1210\u003c\/li\u003e\n\u003cli\u003eC5 1nF\/10V Ceramic SMD Size 0805\u003c\/li\u003e\n\u003cli\u003eResistor R5 100K 1% SMD Size 0805 (Output feedback Divider Resistor)\u003c\/li\u003e\n\u003cli\u003eResistor R4 4.32K 1% SMD Size 0805 (Output feedback Divider Resistor)\u003c\/li\u003e\n\u003cli\u003eResistor R3 52.3K 1% SMD Size 0805 (Frequency) 500Khz\u003c\/li\u003e\n\u003cli\u003eInductor L1 47uH\/5Amp 12x12mm SMD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47249437491372,"sku":"G191","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G191.jpg?v=1789903451","url":"https:\/\/dotfry.com\/products\/48v-dc-input-to-12v-output-dc-dc-converter","provider":"dotfry","version":"1.0","type":"link"}