From power device to complete system, we deliver kitting stage by stage — rectifier, bus, inverter, gate drive, sensing, control and protection — with a production-ready set of parts at every level.
Drag to rotate · AC servo motor
Topology / POWER PATH
The whole drive, device by device
The power path from grid to motor, plus the control loop formed by the gate drivers, sensing and the main controller.
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The hard part of a drive is never one device — it is matching the whole chain. Bus voltage sets the device voltage class, switching frequency sets loss and cooling, sensing accuracy sets how fast the current loop can run, and drive quality decides whether the device ever reaches its datasheet numbers.
What we do is fill that chain in one go — power devices through our partner fabs' factory channels, gate drive, control and passives kitted to the system requirement, and our engineers involved in topology, thermal design and EMC.
Scope / COVERAGE
0.4kW — 630kW
Kitting for general purpose VFDs, servo drives and dedicated drives
Both induction and permanent magnet synchronous designs
IGBT, IPM and SiC routes chosen against cost and efficiency targets
Followed through from board prototype to volume ramp
From parts to product / THE CHAIN
Power stage · magnetics, caps and driversControl board · main MCULoad · industrial motor
Kitting list / BOM
Eight stages, each with a production-ready set of parts
Every group names the product line or partner fab behind it — click through to see the source.
01
Input & Rectifier Stage
From the grid to the rectifier output — this stage sets EMC behaviour and inrush.
EMI filteringCM and DM chokes, X / Y capacitors
Bridge rectifierThree-phase bridge modules and discrete bridges
Surge suppressionMOVs and NTC inrush thermistors
Pre-charge circuitCharging resistor with bypass contactor or thyristor
From a 0.4 kW integrated unit to a 630 kW cabinet drive.
Power range
Input voltage
Device voltage class
Power stage
Current sensing
Power range0.4 — 2.2 kW
Input voltage1-ph 220 V / 3-ph 380 V
Device voltage class650V / 1200V
Power stageIPM or discrete IGBT
Current sensingSingle shunt
Power range3.7 — 15 kW
Input voltage3-ph 380 V
Device voltage class1200V
Power stageSix-pack PIM module
Current sensingDual shunt or Hall
Power range18.5 — 75 kW
Input voltage3-ph 380 V
Device voltage class1200V
Power stageHalf-bridge IGBT module
Current sensingHall current sensor
Power range90 — 250 kW
Input voltage3-ph 380 V / 690 V
Device voltage class1200V / 1700V
Power stageParalleled high current modules
Current sensingHall / fluxgate
Power range280 — 630 kW
Input voltage3-ph 690 V
Device voltage class1700V
Power stageParalleled modules with laminated busbar
Current sensingFluxgate sensor
These are typical engineering values. Actual selection depends on overload factor, switching frequency, ambient temperature and cooling — send us your operating conditions and we will check them.
Control / STRATEGY
From V/F to FOC, chosen by load characteristics
Control strategy sets what the drive can achieve, and also the cost of the controller and sensing chain.
01
V/F Scalar Control
For fan and pump loads with quadratic torque, the lowest cost to build and commission.
02
Open-loop Vector Control
Good low speed torque without an encoder, suited to general industrial loads.
03
Closed-loop FOC
With an encoder, delivers precise speed and torque control — the standard for servo and robot joints.
04
Direct Torque Control
Fast torque response for shock loads and highly dynamic applications.
Tell us the power range, input voltage, control method and cost target, and we will come back with a kitting proposal including part numbers, sources and lead times.
