Control-board development and assembly for three-phase sensorless server-fan control, with project review focused on the three-phase motor interface, sensorless-control requirements and mechanical integration.
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Three-Phase Sensorless Server Fan Controller: technical data
Electrical and control parameters
Application
Cooling fan
Supply voltage
12–24 V
Output current
1–5 A
Output power
12–120 W
Drive method
Three-phase sensorless sinusoidal drive
Motor speed
4,000 rpm
Protection
Overcurrent and overvoltage protection
Speed control
FG / PWM speed control
Mechanical parameters
Board dimension shown
25 mm
Board thickness
1.0 mm
Control-board product range
Water-pump driver board
Massage-gun motor controller: 38 / 45 / 48 / 55
Massage-gun upper control board
Server fan controller
PC RGB lighting controller
PC cooling-pump controller
Fan controller
Fan controller
High-speed hair-dryer motor controller
Server cooling controller
Server cooling controller
Server cooling controller
Mining equipment controller
Paper-dispenser main control board
RGB LED strip
Humidifier main control board
RGB lighting control box
RGB lighting control box
Press-motor controller
Pet-feeder controller
Manufacturing background for the control-board projects
The earlier project-production setup covered the design, development, manufacture and supply of motor drivers, addressable RGB LED drivers, brushless DC motor control boards and household-appliance control boards.
Resources used for the earlier control-board projects
Industry experience at that stage
More than 10 years
Independent factory area
5,500 m²
Employees
150
Engineering and R&D team
20 people
Factory exterior for the earlier production setup
Assembly equipment and production capability
Samsung DECAN S1, S2 and 481PLUS high-speed placement equipment supported the automated assembly setup.
Statistical process control (SPC) and failure mode and effects analysis (FMEA).
Populated control-board assemblies
Procurement and production efficiency
A professional purchasing team worked through a global procurement network and a strict supplier-qualification process. Automated production equipment supported efficient assembly and cost control.
Inspection and assembly operations
Project service and after-sales support
A professional service team responded to technical and industry-specific questions.
Regular follow-up with new and existing customers gathered feedback and supported continuous improvement of the management system.
After-sales troubleshooting and repair support addressed questions arising during service.
Consistent support continued throughout the customer relationship.
Production equipment and workshop operations
SMT workshop
DIP workshop
Automatic solder-paste printer
Samsung DECAN high-speed component placement
Lead-free reflow soldering
AOI optical inspection
DIP insertion and soldering
Manual through-hole assembly
Burn-in testing
Assembled-board holding area
Product testing
Warehouse and materials storage
Industry applications
Automotive manufacturing
Medical equipment
New energy
Consumer electronics and small household appliances
Computers and communications
Industrial control
Quality systems and technical documentation
The earlier project materials included technical-protection records and quality-system documentation alongside the production and application information.
Technical and quality documentation for the earlier setup
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