Whirlybird: Difference between revisions

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Customized peripherals [[Whirlybird/IMU|IMU]] and [[Whirlybird/RS41|RS41]]

[[File:Whirlybird 3D Printed Enclosure Tests.jpeg|800px]]

~~<br>~~

= Components =

== TPS54202DDCR Buck Converter ==

== TPS54202DDCR Buck Converter (3v3) ==

* Voltage In: 4.5-28 (12-28v typical)

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* [https://www.lcsc.com/datasheet/lcsc_datasheet_2410010331_Texas-Instruments-TPS54202DDCR_C191884.pdf Data Sheet]

Voltage In is provided from the first 4 pins of <code>J1</code> and this component is placed at <code>U9</code> with output voltage set point resistors <code>R25/R26</code> with values 100K and 22.1K respectively. Given the equation <code>(100/22.1 + 1) * 0.596 = 3.29</code>, the voltage output provided thru inductor <code>L2</code> in this configuration is set for 3.3 volts and provides the power to the ESP32 and related components.

Voltage In is provided from the first 4 pins of <code>J1</code> and this component is placed at <code>U9</code> with output voltage set point resistors <code>R25/R26</code> with values 100K and 22.1K respectively. Given the equation <code>(100/22.1 + 1) * 0.596 = 3.29</code>, the voltage output provided thru inductor <code>L2</code> in this configuration is set for 3.3 volts and provides the power to the ESP32 and related components. The 3v3 rail is also accessible at [TP](8) and voltage feedback at (TP13).

== LMR51440SDRRR Buck Converter (5v) ==

* Voltage In: 4-36

* Voltage Out: 0.8-28

* Max Current: 4 Amp

* Package: 12 Pin WSON 0.8mm Height

* [https://www.lcsc.com/datasheet/lcsc_datasheet_2309221225_Texas-Instruments-LMR51450FNDRRR_C5782413.pdf Datasheet]

The component is placed at <code>U7</code> and there is a bodge jumping the voltage set point pin via <code>R19/R20</code> with a 1K resistor to correct for an in initial routing error of <code>R21/R18</code> ~18K and 100K respectively. This all results in a designed output voltage of 5 volts thru inductor <code>L1</code> and accessible at [TP](3) along with the voltage feedback at (TP10).

== M.2 (NGFF) Key E ==

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</pre>

=== Gallery ===

RGBW ESP32-S3 wiring RED-GREEN.png

@@ Line 13: / Line 13: @@
 Customized peripherals [[Whirlybird/IMU|IMU]] and [[Whirlybird/RS41|RS41]]
+[[File:Whirlybird 3D Printed Enclosure Tests.jpeg|800px]]
-<br>
 = Components =
-== TPS54202DDCR Buck Converter ==
+== TPS54202DDCR Buck Converter (3v3) ==
 * Voltage In: 4.5-28 (12-28v typical)
@@ Line 27: / Line 28: @@
 * [https://www.lcsc.com/datasheet/lcsc_datasheet_2410010331_Texas-Instruments-TPS54202DDCR_C191884.pdf Data Sheet]
-Voltage In is provided from the first 4 pins of <code>J1</code> and this component is placed at <code>U9</code> with output voltage set point resistors <code>R25/R26</code> with values 100K and 22.1K respectively. Given the equation <code>(100/22.1 + 1) * 0.596 = 3.29</code>, the voltage output provided thru inductor <code>L2</code> in this configuration is set for 3.3 volts and provides the power to the ESP32 and related components.
+Voltage In is provided from the first 4 pins of <code>J1</code> and this component is placed at <code>U9</code> with output voltage set point resistors <code>R25/R26</code> with values 100K and 22.1K respectively. Given the equation <code>(100/22.1 + 1) * 0.596 = 3.29</code>, the voltage output provided thru inductor <code>L2</code> in this configuration is set for 3.3 volts and provides the power to the ESP32 and related components. The 3v3 rail is also accessible at [TP](8) and voltage feedback at (TP13).
+== LMR51440SDRRR Buck Converter (5v) ==
+* Voltage In: 4-36
+* Voltage Out: 0.8-28
+* Max Current: 4 Amp
+* Package: 12 Pin WSON 0.8mm Height
+* [https://www.lcsc.com/datasheet/lcsc_datasheet_2309221225_Texas-Instruments-LMR51450FNDRRR_C5782413.pdf Datasheet]
+The component is placed at <code>U7</code> and there is a bodge jumping the voltage set point pin via <code>R19/R20</code> with a 1K resistor to correct for an in initial routing error of <code>R21/R18</code> ~18K and 100K respectively. This all results in a designed output voltage of 5 volts thru inductor <code>L1</code> and accessible at [TP](3) along with the voltage feedback at (TP10).
 == M.2 (NGFF) Key E ==
@@ Line 531: / Line 541: @@
 </pre>
+=== Gallery ===
 <gallery>
 RGBW ESP32-S3 wiring RED-GREEN.png