2 layers290.1 × 130 mm
2 layers56 × 84 mm
Dc load
vad32m/OpenDcLoad1Building feature-rich robust DC electronic load for hobby use
- Size
- 56 × 84 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 48
- Nets
- 36
- Pads
- 138
- Tracks, vias
- 393, 20
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 22 Apr 2019
- Updated
- 15 Mar 2020
Overview
Dc load is an open-source printed circuit board by vad32m, from the vad32m/OpenDcLoad repository on GitHub. It is a 2-layer board of 56 × 84 mm with 48 parts on 36 nets, routed with 393 tracks and 20 vias.
It is built around the OPA189DBV, AMS1117-3.3 and IRFP350. Its parts include 21 resistors, 11 capacitors, 6 ICs, 2 connectors and 1 transistor.
Main components
3OPA189DBV
UncategorisedTexas Instruments
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
IRFP350
TO-247AC-55℃~+150℃ 1 N-channel 100pF 130nC@10V 16A 180W 2nF 300mΩ@10V 400V 400pF 4V N-Channel TO-247AC MOSFETsTexas InstrumentsMOSFETs
README
README.mdConfigurable parameters
| Configurable parameter | Range | Granularity | Number of Values |
|---|---|---|---|
| Current (CC mode) | 0 - 10 A | 10 mA | 1000 |
| Voltage (CV mode) | 1 - 10 V | 10 mV | 900 |
| 10 - 100 V | 100 mV | 900 | |
| 100 - 360 V | 1 V | 260 | |
| Resistance (CR mode) | 0.5 - 10 Ohm | 50 mOhm | 190 |
| 10 - 200 Ohm | 500 mOhm | 190 | |
| Power (CP mode) | ???? | ???? | ???? |
Limits
| Limit type | Applicable mode | Limit value |
|---|---|---|
| Power | All modes | 100 W max |
| Current | All modes | 10 A max |
| Voltage | All modes | 1 - 360 V |
| Resistance | All modes | 0.5 Ohm min |
Measured values
| Measured parameter | Range | Precision | Number of Values |
|---|---|---|---|
| Current | 0 - 1 A | 1 mA | 1000 |
| 1 - 10 A | 10 mA | 900 | |
| Voltage | 1 - 10 V | 10 mV | 900 |
| 10 - 360 V | 100 mV | 3500 |
Parts
Power transistor - IRFP350
Parts
48| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C2, C4, C7, C8, C9, C10, C11 |
| 3 | DNM | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R9, R14, R18 |
| 3 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP3 |
| 2 | 120K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2, R7 |
| 2 | 180K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R15 |
| 2 | 56K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R11, R12 |
| 2 | DNM | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C5 |
| 2 | OPA189D | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2, U5 |
| 1 | 0.01 | Resistor_SMD:R_4020_10251Metric_Pad1.65x5.30mm_HandSolder | R21 |
| 1 | 1.5K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R5 |
| 1 | 100 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R19 |
| 1 | 100u | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C3 |
| 1 | 10u | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C6 |
| 1 | 16K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R10 |
| 1 | 18K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R6 |
| 1 | 20K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R20 |
| 1 | 22K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R13 |
| 1 | 27K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R8 |
| 1 | 330K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R16 |
| 1 | 36K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3 |
| 1 | 4066 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1 |
| 1 | 510K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R4 |
| 1 | 6.8K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R17 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | Conn_01x02_Female | Connector_Wire:SolderWirePad_1x02_P5.08mm_Drill1.5mm | J2 |
| 1 | Conn_02x07_Odd_Even | Connector_IDC:IDC-Header_2x07_P2.54mm_Vertical | J1 |
| 1 | INA293A | Package_TO_SOT_SMD:SOT-23-5 | U6 |
| 1 | IRFP350 | Package_TO_SOT_THT:TO-247-3_Horizontal_TabDown | Q1 |
| 1 | OPA2189D | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
The 44 most common of 48 parts.
Questions
How big is the Dc load PCB?
It measures 56 × 84 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Dc load use?
48 parts, built around the OPA189DBV, AMS1117-3.3 and IRFP350. 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 Dc load KiCad files?
From the vad32m/OpenDcLoad repository on GitHub, at the commit this page was made from: the board is hw/ecad/dc_load/dc_load.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Dc load design in my own project?
Its repository states no licence, so its author keeps all rights: ask vad32m before reusing the design.
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