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ADP1046ACPZ-RL Datasheet(PDF) 36 Page - Analog Devices |
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ADP1046ACPZ-RL Datasheet(HTML) 36 Page - Analog Devices |
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36 / 96 page  ADP1046 Data Sheet Rev. 0 | Page 36 of 96 LAYOUT GUIDELINES This section explains best practices that should be followed to ensure optimal performance of the ADP1046. In general, all components should be placed as close to the ADP1046 as possible. All signals should be referenced to their respective grounds. CS2+ AND CS2− The routing of the traces from the sense resistor to the ADP1046 should be laid out in parallel to each other. The traces should also be kept close together and as far from the switch nodes as possible. VS3+ AND VS3− The routing of the traces from the remote voltage sense point to the ADP1046 should be laid out in parallel to each other. The traces should also be kept close together and as far from the switch nodes as possible. Place a 100 nF capacitor from VS3− to AGND to reduce common-mode noise. VDD Place decoupling capacitors as close to the part as possible. A 4.7 μF capacitor from VDD to AGND is recommended. SDA AND SCL The routing of the traces should be laid out in parallel to each other. The traces should also be kept close together and as far from the switch nodes as possible. CS1 Run the traces from the current sense transformer to the ADP1046 in parallel to each other. The traces should also be kept close together and as far from the switch nodes as possible. EXPOSED PAD The exposed pad underneath the ADP1046 should be soldered to the PCB AGND plane. VCORE Place a 330 nF decoupling capacitor from this pin to DGND as close to the part as possible. RES Place a 10 kΩ, ±0.1% resistor from this pin to AGND as close to the part as possible. RTD Route a single trace to the ADP1046 from the thermistor using a dedicated trace to AGND. Place the thermistor close to the hottest part of the power supply. AGND, DGND, AND PGND Create an AGND ground plane and make a single-point (star) connection to the power supply system ground. Connect DGND to AGND with a very short trace using a star connection. Connect PGND to AGND using a star connection. |
Similar Part No. - ADP1046ACPZ-RL |
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Similar Description - ADP1046ACPZ-RL |
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