In precision manufacturing processes such as smartphone camera module encapsulation, chip underfill, and LED die bonding, piezoelectric jetting valves have become the mainstream dispensing solution thanks to their non-contact operation and high frequency response. However, the performance of a jetting valve largely depends on its driving core – the piezoelectric controller. An excellent piezoelectric controller must not only provide stable, clean drive signals for the piezoelectric ceramics but also offer intelligent parameter management and multi-valve coordination capabilities. The high-performance piezoelectric controller introduced here is designed specifically to meet the demanding requirements of industrial precision dispensing, integrating high precision, high stability, and ease of operation to help enterprises achieve fast and stable precision dispensing.

High-Precision Control Circuit: Laying the Foundation for Dispensing Quality

The piezoelectric controller incorporates a high-precision control circuit capable of outputting ultra-low noise, high-linearity drive voltage to precisely control the plunger action of the piezoelectric jetting valve. Each drive channel is finely calibrated to ensure consistent shot-to-shot volume even during prolonged high-frequency operation. For applications requiring nanoliter-level volume accuracy (such as conductive silver paste or underfill), the controller’s precision directly determines dispensing yield. With its outstanding circuit design, this product provides a solid foundation for high-precision, stable dispensing.

Large-Screen Display & Easy Operation: Lowering the Entry Barrier

Traditional piezoelectric controllers often use multi-level menus, knobs, or software debugging, which impose a steep learning curve on field engineers. This product features a large-size LCD display with a clean, intuitive interface. Key parameters are clearly visible. Operators can quickly set and modify voltage, frequency, duty cycle, waveform, and other parameters without needing to consult a manual. This intuitive human-machine interaction significantly shortens equipment debugging and changeover time, allowing line workers to easily master precision dispensing processes.

Flexible Parameter Adjustment: Adapting to Various Fluids

Different fluids – UV adhesives, SMT red adhesives, silver pastes, hotmelt adhesives, etc. – have vastly different viscosities, thixotropic behaviours, and curing characteristics, each requiring specific drive parameters. The piezoelectric controller supports precise adjustment of drive voltage, waveform slope, pulse width, frequency, and other core parameters. Users can create dedicated recipes for each fluid. Whether it is high-speed jetting of low-viscosity fluids or stable dispensing of highviscosity adhesives, the optimal drive combination can be found – truly “one controller, hundred of fluids.”

Smooth Filtered Drive: More Stable Dispensing

Piezoelectric ceramics are highly sensitive to the purity of the drive signal. This controller integrates smooth filtering circuits that effectively suppress power supply ripple and electromagnetic interference, outputting clean, rounded drive waveforms without spikes. The direct benefits are: smoother jetting valve operation, consistent dot roundness, and no satellite drops or tailing. Especially in continuous line-dispensing mode, the smooth drive signal ensures uniform line width and neat edges, significantly improving the appearance quality of the dispensed pattern.

Multi-Valve Coordination: Synchronous or Asynchronous Switching as Needed

To meet high-throughput production requirements, many lines use multiple piezoelectric jetting valves in parallel. This controller supports multi-channel independent control, allowing flexible configuration into synchronous multi-valve mode (all valves jet simultaneously) or asynchronous multi-valve mode (each valve jets according to a set timing sequence). When multiple fluids are required on the same workpiece, the controller can quickly allocate tasks through channel switching without needing additional control units. This feature significantly improves overall equipment effectiveness in scenarios such as automotive electronics and power modules that require multiple dispensing points and multiple fluid types.

Parameter Retention After Power-Off: No Need for Repeated Adjustment

Frequent power cycling or unexpected shutdowns often cause parameter loss – a common pain point in production. The piezoelectric controller features parameter retention after power-off; all settings are automatically saved in nonvolatile memory. When power is restored, the controller automatically resumes all parameters prior to shutdown, eliminating the need for manual reentry. This not only reduces commissioning workload but also prevents production anomalies caused by incorrect parameter settings.

Easy Switching Between Dots and Lines: Adapting to a Wide Range of Dispensing Applications

Dispensing processes fall into two main categories: dot dispensing (jetting discrete droplets) and line dispensing (continuous drawing of lines, either by tracing or by jetting). This controller is equipped with both dispensing modes, accessible with a single button. In dot mode, it precisely controls single-shot volume and frequency. In line mode, the controller works with the motion platform’s speed feedback to achieve equally spaced jetting or continuous line coating. Whether it is reinforcing adhesive on fuse leads or sealing lines on mobile phone bezels, the controller handles them with ease.

Typical Application Scenarios

Semiconductor packaging: Chip underfill, silver-epoxy die attach, dam-and-fill.

Consumer electronics: Active alignment adhesive for camera modules, bezel dispensing, FPC reinforcement.

Automotive electronics: Sensor housing sealing, selective coating on PCBs.

LED lighting: Phosphor dispensing, lens bonding.

Conclusion

The piezoelectric controller is the “brain” of the piezoelectric jetting valve – it determines the upper limit of dispensing accuracy and the lower limit of stability. With its large-screen easy operation, precise parameter adjustment, smooth drive output, multi-valve coordination, and power-off parameter retention, this product provides a highly reliable, user-friendly, and efficient drive solution for precision dispensing. Choose this controller to unleash the true performance potential of your piezoelectric jetting valve – maintaining micron-level accuracy and outstanding process consistency even in high-speed production.