2 layers50 × 50 mm
2 layers45 × 30 mm
TFSBEC01
ThunderFly-aerospace/TFSBEC015High efficient switching power supply for UAV actuators.
- Size
- 45 × 30 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 39
- Nets
- 14
- Pads
- 120
- Tracks, vias
- 81, 111
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 2 Dec 2020
- Updated
- 16 Sep 2024
Overview
TFSBEC01 is an open-source printed circuit board by ThunderFly-aerospace, from the ThunderFly-aerospace/TFSBEC01 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 45 × 30 mm with 39 parts on 14 nets, routed with 81 tracks and 111 vias.
It is built around the ACS781LLRTR-050U-T, MIC5504-3.3YM5 and BZX585-B5V6,115-JSM, with the SM06B-GHS-TB, XT30PW-F and XT30PW-M among its other parts. Its parts include 20 capacitors, 6 resistors, 4 diodes, 4 connectors and 3 ICs. It belongs with the robots and motor control and power boards of this library.
Main components
6
ACS781LLRTR-050U-T
PSOF-7-40℃~+150℃ 120kHz 3.6us 39.6mV/A 3V~3.6V 50A Not supported PSOF-7 Current Sensors ROHSAllegro MicroSystems, LLCCurrent Sensors
MIC5504-3.3YM5
SOT-23-5-40℃~+125℃@(Tj) 1 120uVrms 15uA 180mV@(300mA) 3.3V 300mA 5.5V 75dB@(1kHz) Fixed Over Temperature Protection、Enable Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BZX585-B5V6,115-JSM
SOD-523SOD-523 Zener Diodes ROHSJSMSEMIZener Diodes
SM06B-GHS-TB
SMD,P=1.25mm,卧贴-25℃~+85℃ 1 1.25mm 10.75mm 1A 1x6P 4.13mm 4.25mm 50V 6 6P Auxiliary Solder Pin GH PA9T Phosphor bronze Surface Mount, Right Angle Tin UL94V-0 White SMD,P=1.25mm,Surface Mount，Right Angle Wire To Board Connector ROHSJSTWire To Board Connector
XT30PW-F
UncategorisedAmass Electronics
XT30PW-M
-- Power connector / plug connector ROHSChangzhou Amass ElecUncategorised
README
README.mdTFSBEC01 - High efficient power supply with measuring circuit for UAV
Many devices in unmanned vehicles require a quality power supply, and it is very useful to know the actual and real consumption of these components. Our TFSBEC module is designed to provide power to servos, autopilot (flight controller), and other medium-power drone accessories. In case the user needs more current or two independent sources on his drone, for example, a separate source for avionics and power-consuming elements (actuators), it is possible to chain these modules.
Parameters
| Parameter | Value | Note |
|---|---|---|
| Regulator technology | Switched step-down | LMR14050 |
| Input voltage | 6 - 40 V | Equivalent of 2S to 9S li-pol accumulators |
| Output voltage | 5.4 V, 5 A | based form the PX4 standard, can be adjusted |
| Regulated connector | Molex Click-n-mat 6p, JST-GH 6p | Connectors are parallel |
| In/Out connector | XT30 | max current 15 A |
| Current measurement range | 0 - 50 A | |
| Volts per Amper | 39.6 mV/A | From component datasheet |
| Current measurement Volts offset | 330 mV | From component datasheet |
| Voltage measurement range | 0 - 40 V | Depend on target ADC max input ( max. 3.95 V ) |
| Voltage measurement divider | 10.13 | From schematic |
| Size | approx. 46 x 30 mm | PCB only |
| Weight | PCB only | |
| Compatibility | Pixhawk-based drones | As a quality source, it can be operated on any drone |
PX4 Params
These constants are nominal values taken from the datasheet:
- A = BAT1_A_PER_V = 25.2525
- B = BAT_V_OFFS_CURR = 0.33
- BAT1_V_DIV = 10.13
QGC build-in measurement can be used to estimate parameters more precisely for the specific piece. The PX4 estimation of current is calculated from the ADC raw voltage by the following formula:
For the computation of BAT_V_OFFS_CURR, multiple current measurements are usually needed, because there are significant peaks due to powering of electronics with a low current consumption.
Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 10uF/50V | Resistor_SMD:R_1206_3216Metric | C1, C2, C6, C7, C8, C9, C10, C11 |
| 3 | 100nF | Mlab_R:SMD-0805 | C4, C5, C15 |
| 2 | 100uF/6V3 | Resistor_SMD:R_1206_3216Metric | C17, C18 |
| 2 | 1uF | Mlab_R:SMD-0805 | C13, C16 |
| 2 | ? | Mlab_R:SMD-0805 | C19, R7 |
| 2 | BZX585-B5V6.115 | Diode_SMD:D_SOD-523 | D2, D4 |
| 2 | R | Mlab_R:SMD-0805 | R5, R6 |
| 1 | 100nF/50V | Mlab_R:SMD-0805 | C12 |
| 1 | 10uF | Mlab_R:SMD-0805 | C3 |
| 1 | 13k7 | Mlab_R:SMD-0805 | R3 |
| 1 | 180R | Mlab_R:SMD-0805 | R1 |
| 1 | 1k5 | Mlab_R:SMD-0805 | R4 |
| 1 | 213226-0611 | Connector_Molex:Molex_CLIK-Mate_505405-0670_1x06-1MP_P1.50mm_Vertical | J1 |
| 1 | 22nF | Mlab_R:SMD-0805 | C14 |
| 1 | 59kR | Mlab_R:SMD-0805 | R2 |
| 1 | ACS781LLRTR-050U-T | Sensor_Current:Allegro_PSOF-7_4.8x6.4mm_P1.60mm | U1 |
| 1 | HCI1050-5R5 | Inductor_SMD:L_Wuerth_HCI-1050 | L1 |
| 1 | LED GREEN | Mlab_D:LED_1206 | D1 |
| 1 | LMR14050 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U3 |
| 1 | LOGO | MLAB_LOGA:TF | G*** |
| 1 | MIC5504-3.3YM5 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | PDS760-13 | Diode_SMD:D_PowerDI-5 | D3 |
| 1 | SM06B-GHS-TB | Connector_JST:JST_GH_SM06B-GHS-TB_1x06-1MP_P1.25mm_Horizontal | J2 |
| 1 | XT30PW-F | Connector_AMASS:AMASS_XT30PW-F_1x02_P2.50mm_Horizontal | J19 |
| 1 | XT30PW-M | Connector_AMASS:AMASS_XT30PW-M_1x02_P2.50mm_Horizontal | J18 |
Questions
How big is the TFSBEC01 PCB?
It measures 45 × 30 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TFSBEC01 use?
39 parts, built around the ACS781LLRTR-050U-T, MIC5504-3.3YM5, BZX585-B5V6,115-JSM and SM06B-GHS-TB. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the TFSBEC01 KiCad files?
From the ThunderFly-aerospace/TFSBEC01 repository on GitHub, at the commit this page was made from: the board is hw/sch_pcb/TFSBEC01.kicad_pcb and its schematic hw/sch_pcb/TFSBEC01.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the TFSBEC01 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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