80A 12S 4-in-1 ESC
UESC-80-12S-4I-A is an 80A 12S 4-in-1 ESC for UAV engineering teams integrating four brushless motors into a higher-voltage power system. The hardware combines a stacked control-and-power-board layout, 6–12S LiPo input, an 8-layer 4oz copper power PCB and two mounting-hole patterns. Its 80A continuous and 100A peak current ratings provide a starting point for evaluating power wiring, motor loading, board clearance and cooling in the target aircraft.
12S motor control in a stacked four-channel ESC
The UESC-80-12S-4I-A is configured for four brushless motor outputs and 6–12S LiPo input. Its stacked arrangement separates the control board and power board, helping organize signal circuitry and the high-current switching stage within an 88.1 × 85.7 mm assembly.
Engineering priorities for 12S integration
Motor current is only one part of the selection. A complete evaluation also covers battery voltage excursions, input lead length, DC-link capacitance, solder joints, signal harnesses and available airflow.
With two mounting-hole patterns and a stacked assembly, mechanical clearance, vibration isolation and access to the battery and motor connections are key integration considerations.
Stacked control & power boardsFour motor outputs6–12S LiPo
UESC-80-12S-4I-A technical specifications
| Parameter | Specification |
|---|---|
| Model | UESC-80-12S-4I-A |
| ESC configuration | 4-in-1, four motor channels |
| Battery input | 6–12S LiPo |
| Continuous current rating | 80A |
| Peak current rating | 100A |
| Board outline | 88.1 × 85.7 mm |
| Net weight | 117 g |
| Mounting-hole patterns | 30.5 × 30.5 mm and 60 × 60 mm |
| PCB architecture | Stacked control board and power board |
| Power PCB | 8 layers, 4oz copper |
| Main MCU | AT32F421K8U7 |
| Gate drivers | 3 × SLM21867 |
| Power MOSFET device rating | 80V class |
| Power regulation | DC–DC |
| Current ratio setting | 20 |
| Current sensing | Bus-current measurement function |
| Firmware series | AT4G Rev.32.9 Multi |
| Throttle protocols | PWM, OneShot125, OneShot42, Multishot, DShot150, DShot300, DShot600 |
| Control functions | Hardware PWM, Damped Light, active freewheeling |
| FC interface signals | V / G / C / T / M1 / M2 / M3 / M4 (signal reference) |
Current ratings are product specifications. Final operating suitability depends on the motor loading, wiring, thermal environment and complete UAV installation.
Separate control and power boards for 12S ESC integration
Control-board and power-board separation
The stacked architecture places the control circuitry and power-switching circuitry on separate boards. This supports a more structured division of low-level motor-control signals and high-current routing within the assembly.
The mechanical arrangement should be reviewed as a complete stack: board-to-board spacing, connectors, fasteners, clearance to metal parts and vibration exposure all affect integration.
80V-class MOSFETs and DC–DC power conditioning
80V MOSFET power stage
The listed MOSFET class supports high-voltage motor switching. Battery-line overshoot, switching losses and component temperature remain essential design inputs.
3 × SLM21867 gate drivers
The specified three-driver architecture supports the ESC power-stage control arrangement.
DC–DC and filtering
DC–DC regulation and ceramic capacitors support the onboard control supply and electrical filtering.
8-layer, 4oz power PCB for high-current interconnection
The power PCB is specified as eight layers with 4oz copper. Copper cross-section, conductor geometry, vias, pad interfaces and component placement are part of the high-current distribution and heat-spreading design.
The ESC also uses large power connection pads and a resin-plugged via process. These features support board fabrication and assembly, while practical temperature rise depends on switching losses, load duration, cooling airflow and thermal paths.
Battery and motor connection planning
Battery leads and motor-output cables should be sized with the load profile and assembly method in mind. Review solder-pad access, strain relief and protection from vibration before installation.
Dual mounting patterns and compatible throttle protocols
30.5 mm / 60 mm mounting
Two stated mounting-hole patterns support alternative mechanical mounting arrangements for the large ESC assembly.
Flight-controller input
PWM, OneShot125, OneShot42, Multishot and DShot150/300/600 are listed as supported throttle-command protocols.
Bus-current monitoring
Onboard current sensing is listed as a feature for system monitoring and integration with suitable controller configurations.
Evaluate the full stack
Plan around the 88.1 × 85.7 mm outline, electrical connection locations, the control-board stack height, FC wiring and airflow. Confirm connector pin order and mounting hardware with the selected production configuration.
Firmware reference: AT4G Rev.32.9 Multi. Firmware and pinout should match the actual ESC hardware when configuring the flight controller.
VGCT1234 flight-controller signal reference
The board drawing identifies eight interface functions: battery-voltage sensing, ground, current-sense output, ESC telemetry and four motor-command inputs. Signal order must be matched with the flight-controller harness before integration.
| Signal | Function |
|---|---|
| V | Battery voltage (VBAT) |
| G | Ground (GND) |
| C | Current sense (CUR) |
| T | ESC telemetry (TEL) |
| 1 / 2 / 3 / 4 | Motor 1–4 control signals |
A 12S ESC platform for higher-voltage UAV designs
UAV power-system development
Evaluate four-motor drive systems requiring 6–12S battery compatibility and a defined ESC electrical platform.
Custom aircraft integration
Coordinate power leads, motor outputs, mounting pattern and FC harnesses against the target airframe.
OEM sourcing programs
Use the published ESC configuration as the basis for technical selection, purchasing discussions and project planning.
Motor selection, aircraft mass, propeller characteristics and cooling conditions determine whether this ESC is an appropriate fit for a particular platform.
Multilayer high-copper PCB manufacturing for ESC electronics
UltroNiu supports multilayer PCB fabrication for UAV control and power-electronics projects. A manufacturable design requires review of stack-up, conductor geometry, via construction, solder-mask openings and inspection requirements against the approved fabrication data.
Power-board assembly and project-defined quality checks
High-current ESC assembly planning includes component placement, power-pad soldering, connector access, cleaning and inspection. PCB/PCBA programs can be managed against customer-approved build data and specified acceptance requirements.
Typical quality steps for applicable projects can include bare-board electrical testing, assembly inspection and functional verification. The agreed scope depends on the approved hardware design and purchase requirements.
80A 12S ESC sourcing and custom electronics projects
Standard product inquiry
Discuss the UESC-80-12S-4I-A configuration, quantity, accessories and delivery requirements.
Integration engineering
Review power wiring, motor current, mechanical mounting, FC connectivity and installation constraints.
PCB / PCBA services
For separately defined programs, discuss customer-specific PCB fabrication, BOM sourcing, assembly and inspection requirements.
For a focused technical review, send the target aircraft, battery configuration, expected motor current, cooling conditions, estimated order quantity and any available interface drawings.
Questions from UAV engineering and OEM buyers
What battery input does this 80A ESC support?
The UESC-80-12S-4I-A is specified for 6–12S LiPo input. Battery transients, input filtering and the complete electrical installation should be reviewed when selecting the power system.
What are the continuous and peak current ratings?
The specified ratings are 80A continuous and 100A peak. Operating suitability depends on motor loading, cooling and wiring conditions.
What is the difference between the stacked control board and power board?
The ESC separates the control circuitry and high-current power stage into a stacked arrangement. This allows their routing and placement to be organized as distinct board functions.
Does the ESC support both 30.5 mm and 60 mm mounting patterns?
Two mounting-hole patterns are listed: 30.5 × 30.5 mm and 60 × 60 mm. Confirm mounting hardware, stack clearance and connector placement for the intended aircraft.
Which motor-control protocols are supported?
Listed throttle-input protocols include PWM, OneShot125, OneShot42, Multishot, DShot150, DShot300 and DShot600.
What power-board construction is specified?
The power board uses an eight-layer, 4oz copper PCB. Its current-handling and thermal behavior also depend on routing geometry, component losses and available cooling.
Does the ESC provide current monitoring?
Bus-current monitoring is a listed feature. Integration with a flight controller depends on the wiring interface and compatible configuration.
Can UltroNiu support OEM supply and custom PCB/PCBA projects?
Yes. Discuss product sourcing or separately specified PCB fabrication, component sourcing, assembly and project-specific inspection requirements with the engineering team.
What mounting-hole patterns are shown for this ESC?
The dimensional reference shows a 30.5 × 30.5 mm inner pattern and a 60 × 60 mm outer pattern, with an overall board outline of 88.1 × 85.7 mm.
What do the VGCT1234 interface labels represent?
The interface reference identifies V for battery voltage, G for ground, C for current sensing, T for ESC telemetry and 1–4 for four motor-control signals. Match the physical connector orientation and harness wiring to the controller before power-up.
Request an 80A 12S ESC quotation
Discuss your 12S UAV power-system requirements
Share your 6–12S battery configuration, motor and propeller setup, expected current profile, mounting constraints, flight-controller interface and required quantity. For custom hardware, include drawings, BOM or PCB data where available.
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