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HM8119 Scheda tecnica(PDF) 12 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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HM8119 Scheda tecnica(HTML) 12 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
12 / 13 page Standoff 55V 500mA 850KHz Sync Step-Down Regulator Page 12 / 13 PC Board Layout Consideration PCB layout is very important to achieve stable operation. It is highly recommended to duplicate EVB layout for optimum performance. If change is necessary, please follow these guidelines for reference. 1. Keep the path of switching current short and minimize the loop area formed by Input capacitor, high-side MOSFET and low-side MOSFET. 2. Bypass ceramic capacitors are suggested to be put close to the VIN Pin. 3. Ensure all feedback connections are short and direct. Place the feedback resistors and compensation components as close to the chip as possible. 4. VOUT, SW away from sensitive analog areas such as FB. 5. Connect IN, SW, and especially GND respectively to a large copper area to cool the chip to improve thermal performance and long-term reliability. Top Layer Bottom Layer Sample Board Layout HM8119 |
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