# Power supply

### Power supply diagram

![](/files/dx0z3GUF7yJa85fC46m2)

[PDF FORMAT](https://github.com/airvolute/DroneCore.Suite/blob/main/DroneCore.Suite/Docs/DroneCore.Pilot_v1.2_power_supply_diagram_v1.2.pdf)

### DroneCore.Pilot power consumption

Default system configuration consists of DroneCore.Pilot board connected with the Cube Orange and NVIDIA® Jetson Xavier™ NX Module. Power consumption of the whole system depends on usage of Jetson Xavier™ NX computing power and peripheral devices connected to board. This paragraph assumes that NVIDIA® Jetson Xavier™ NX is in 20W power mode and no other peripheral is connected to board, except one imx477 CSI camera. Video stream processing is the situation where 20W power mode starts to play a role. We describe some default test scenarios for reference, which the one can use to calculate approximate value of power consumption of your whole system.

* **Scenario 1:**
  * Xavier NX statistics:

![jtop output - booted system](/files/4wNbZ06cBMgxoEpwGEpx)

* NVIDIA® Jetson Xavier™ NX: booted, with no user code running
* Cube Orange: off
* imx477: off
* power consumption 3,4W
* **Scenario 2:**
  * Xavier NX statistics: (same as in situation 1)
  * NVIDIA® Jetson Xavier™ NX: booted, with no user code running
  * Cube Orange: on
  * imx477: off
  * power consumption 4,6W
* **Scenario 3:**
  * Xavier NX statistics:

![jtop output - stresstest](/files/Ijh6jsKUhjgvDMBWXvdo)

* NVIDIA® Jetson Xavier™ NX: CPU stress test, GPU stress test, 4k,30fps stream from camera
* Cube Orange: running
* imx477: streaming
* power consumption 21,1W

### 5V DC/DC specification

As described in the "Power supply diagram", DroneCore.Pilot board contains 5V DC/DC converter, which can be supplied directly from drone battery (VDD\_MAIN). It is highly recommended to use fan to ensure sufficient air flow through drone body, if sum of power consumption of DroneCore.Pilot with all connected peripherals exceeds 25W.

{% hint style="danger" %}
Use proper cooling if sum of power consumption of DroneCore.Pilot with all connected peripherals exceeds 25W.
{% endhint %}

{% hint style="danger" %}
If connected payload and peripherals act like capacitive load, so the possible current spikes are high, we recommend to supply 5V to system from external 5V power source. Please refer to the ,,Power selector undervoltage lockout" issue in [Errata sheet](https://airvolute.com/download/dcs1/DCS1.Pilot_errata_sheet_v1.0.pdf).
{% endhint %}

* **Electrical characteristics**
  * input voltage range: 6,5V - 30V
  * maximum current output: 12A (20 seconds peak)
  * sustainable maximum current: 8A (with proper cooling)
* **Thermal characteristics**
  * maximum temperature 150 degrees

**Thermal measurement 1:**

* measured at:
  * total 25W power consumption of whole system
  * room temperature (21 deg)
  * steady state after 10 minutes, without active cooling
* temperature was culminating at approx 60degrees after 10 minutes

![5A10MIN](/files/Hb7A0TZuFEGkcow9gV88)

**Thermal measurement 2:**

* measured at:
  * total 40W power consumption of whole system
  * room temperature (21 deg)
  * steady state after 10 minutes, without active cooling
* temperature was culminating at approx 90degrees after 10 minutes

![5A10MIN](/files/IWObhIsToNmFJebkDYXF)


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