24V Micro GaN Servo PCBA

Use the screener to identify what needs investigation before committing a miniature servo PCBA to a motor or enclosure. Public component evidence supports design options; it does not establish a qualified GanServo board configuration.

Evidence: EPC2055 manufacturer product data. EPC lists a 40 V device and a 2.5 × 1.5 mm die. This is not a 60 V part or a validated BOM for this screener.

Evidence: EPC9146 quick start guide, v2.0 (2022). A reference inverter using EPC2152 integrated power stages; the guide describes controller, sensing and protection interfaces. It is a different board, not a GanServo qualification record.

The model is a steady-load sensitivity comparison with sinusoidal fundamental phase current. It fixes resistance at a reference temperature and does not iterate electrothermal feedback. Every constant below is an illustrative assumption, not a measured product parameter or an EPC2055 characterization.

Excludes gate-drive, logic, shunt, PCB copper and motor losses, magnetic saturation, control dynamics and protection behavior. Use per-phase equivalent inductance; if the datasheet reports line-to-line inductance, confirm winding connection and conversion with the motor supplier before entry. The 25% ripple flag is an editorial review trigger. Above the 100°C resistance reference, temperature prediction is withheld; below it still requires hardware validation. High ripple also withholds temperature because the conduction estimate omits ripple RMS heating.

Budget space for the power stage, control, feedback, power rails, connectors and protection together. A transistor footprint does not establish a complete servo board envelope. Decide early whether current control, encoder decoding and communication live on the PCBA or an external controller.

Evidence: EPC9146 quick start guide, v2.0 (2022). A reference inverter using EPC2152 integrated power stages; the guide describes controller, sensing and protection interfaces. It is a different board, not a GanServo qualification record.

Choose using a matched application comparison. This page has no measured silicon-versus-GaN board dataset and cannot assign a universal efficiency, price or footprint advantage.

EPC2055 is a 40 V device, not a 60 V part. Its manufacturer data cannot justify a 36 V bus operating claim. Choose an appropriate voltage class only after reviewing bus tolerance, clamping, regeneration and measured overshoot.

Evidence: EPC2055 manufacturer product data. EPC lists a 40 V device and a 2.5 × 1.5 mm die. This is not a 60 V part or a validated BOM for this screener.

The inverse ripple relationship follows the model assumption. It does not prove that higher PWM removes motor chokes, eliminates acoustic noise or prevents demagnetization. Validate low-inductance motors over duty, speed and load, including peak current and magnetic saturation.

Too little non-overlap can permit shoot-through; too much increases reverse-conduction loss. The model uses 25 ns as a sensitivity assumption, not a driver programming recommendation. Check propagation spread, temperature, gate waveform and layout before selecting a setting.

Evidence: TI LMG1210 product data and datasheet Rev. D. A gate-driver example with adjustable dead time in PWM mode and an external bootstrap diode. Driver timing needs checking against the selected FET and layout.

Keep commutation and gate loops compact and separate noisy switch-node copper from sensing and encoder returns. Layer count, copper weight, dielectric spacing and via construction must follow the selected package, fabricator capability and electrical/thermal analysis. No universal sub-nanohenry loop or six-layer stackup is established here.

Inline sensing may provide current visibility where low-side sensing has short sampling windows. It still requires recovery after switching transients and enough acquisition time. Enhanced PWM rejection does not mean zero blanking or guaranteed valid samples at every duty cycle.

Evidence: TI INA240 product data and datasheet Rev. C. An enhanced PWM-rejection amplifier, with −4 to 80 V common-mode range and 400 kHz bandwidth. Bandwidth alone does not establish the usable ADC sampling window.

The same bridge loss can yield different enclosure outcomes. The tool selects two assumed aggregate thermal impedances; neither is a measured board, TIM specification or manufacturer junction-to-ambient rating.

Characterize interface contact, housing temperature, preload and board bending. Add omitted heat sources and test the worst duty cycle. A lower predicted proxy does not establish component lifetime, safe touch temperature or a continuous current rating.

For an isolated capacitor, ΔE = ½ × Ceff × (Vmax² − Vstart²). The example below assumes 24 V rising to 30 V; 30 V is an illustrative endpoint, not a board trip or safe limit. Real usable headroom depends on all components and control thresholds.

Obtain capacitance-versus-bias data for the selected MLCC part. A battery may reject charging because of BMS or charge-state limits; a regulated source may not sink at all. Confirm braking resistance pulse energy, clamp behavior and disconnected-bus faults on the actual assembly.

Faster edges can increase coupled noise and ringing. Tune gate drive, local decoupling, return paths, filtering and harness shielding together, then check the thermal cost. No fixed gate resistor value proves emissions compliance.

Public GanServo EMC margins for this PCBA are not established here. Define the applicable standard and test configuration with the project team; reference-device characteristics cannot substitute for an accredited system test.

Annular concepts preserve a shaft opening; strip concepts suit narrow cavities; split boards can separate heat and sensing but add interconnect and assembly cost. Dimensions, heights, connector choices and cooling surfaces are unknown until a drawing is agreed. Request a STEP model and tolerance stack rather than treating a schematic illustration as a fit guarantee.

These hypothetical scenarios use the shared tool model. Every row supplies its inputs, cooling assumption, interpretation and next action; no customer, prototype test or application qualification is implied.

Repeat a scenario in the tool and change one input at a time. When ripple and thermal flags conflict, evaluate both rather than increasing PWM without a loss budget. Request motor waveform and enclosure tests before approving the design direction.

Assembly and inspection requirements depend on the selected package and accepted reliability target. This page does not establish a GanServo production process capability, mandatory IPC voiding limit, lead time or completed compliance test.

For an RFQ, send drawings and the operating profile as well as tool results. If motor inductance, thermal path or regeneration is unknown, identify it explicitly and request a measurement plan. Confirm prototype milestones, NRE, recurring price and component substitutions in the quotation.

Sources checked on 8 November 2026. Manufacturer documents describe their own products and test conditions. Tool constants and all numerical scenarios are explicitly illustrative; there are no GanServo board measurement or certification records on this page.

Evidence: EPC9146 quick start guide, v2.0 (2022). A reference inverter using EPC2152 integrated power stages; the guide describes controller, sensing and protection interfaces. It is a different board, not a GanServo qualification record.

Evidence: EPC2055 manufacturer product data. EPC lists a 40 V device and a 2.5 × 1.5 mm die. This is not a 60 V part or a validated BOM for this screener.

Evidence: TI LMG1210 product data and datasheet Rev. D. A gate-driver example with adjustable dead time in PWM mode and an external bootstrap diode. Driver timing needs checking against the selected FET and layout.

Evidence: TI INA240 product data and datasheet Rev. C. An enhanced PWM-rejection amplifier, with −4 to 80 V common-mode range and 400 kHz bandwidth. Bandwidth alone does not establish the usable ADC sampling window.

Still to confirm for an actual order: qualified BOM, current and voltage ratings, efficiency, dimensions, firmware interfaces, thermal impedance, inspection coverage, applicable compliance, price and lead time. Request project-specific evidence through the engineering inquiry.