Core Summary
With an increasing number of laboratory tables, each tested board, sensor, and module requires an adapter, leading to insufficient sockets, messy wiring, and difficulty identifying which power supply is unstable when problems occur. Dual/multi-channel programmable DC power supplies like Aim-TTi can consolidate multiple power supplies into a single device, allowing independent setting and reading of current and voltage. This makes the test bench more controllable and reduces the management burden on the team.
1. Hidden Troubles Arising from Power Supply Disruption
1.1 Socket and Wiring
With an increasing number of adapters and power strips connected in series, the risk of grounding loops rises. Occasional resets and noise sources are difficult to pinpoint, and troubleshooting often begins with suspicion of the power supply, without any supporting data.
1.2 Inaccurate current reading
Most adapters do not have current readback. When the device under test leaks or short-circuits, it is not visible to the naked eye, and the problem is only discovered after it has burned, resulting in the loss of both the board and time.
II. Consolidate power supply into one unit
2.1 Dual-channel independence for greater flexibility
CPX400DP, a dual-channel model, features two independent channels of 0~30V / 0~10A [please verify], one for the digital board and the other for the analog front end, ensuring no crosstalk between them and facilitating the combination of positive and negative power supplies.
2.2 Multi-channel Parallel Testing
The MX100TP and other multi-channel models can simultaneously power multiple boards, making them ideal for parallel power-on testing in small batch quality inspections, eliminating the need for repeated plugging and unplugging.
2.3 Remote compensation and readback
Some models support remote sensing compensation for line loss and readback of actual output current. In case of anomalies, it is more convenient to address current issues first before proceeding, rather than inspecting the board afterwards.
III. Long-term value to the team
The desktop is clean and tidy, and fault localization has shifted from "guessing which path" to "seeing which path", making troubleshooting faster.
The power-on sequence can be configured to avoid large capacitor impact and protect the tested components.
With centralized equipment management, clear inventory and borrowing/return processes, asset management becomes effortless.
Key Parameter Table (Aim-TTi represents the model)
IV. Don't just focus on the parameter table
Choosing a power supply is often dictated by the specifications listed in the parameter table. However, what you should really consider is how many circuits you need to supply simultaneously, what current each circuit should carry, and whether remote current reading is necessary. By laying out the list of tested components, the number of circuits and current levels will naturally become clear. We can help you cross-reference the list to eliminate the risk of buying too much or too little. Additionally, what is often overlooked in the laboratory is overcurrent protection and power-on sequence - setting these two items in the script is more reliable than relying on human memory, and we can also help you include them in the checklist during the planning stage. Once the power supply is selected, power distribution becomes easier to plan, and the number of power strips can be reduced from a mess to one or two, improving both safety and tidiness. When selecting a model, prioritizing "sufficient" over "top-of-the-line" can actually result in a more cost-effective budget. When purchasing durable goods like power supplies, spending an extra half hour in the early stages to verify requirements can save a lot of rework and idle time later on. If needed, we can also provide a comparison of mainstream models, saving you the effort of checking specifications yourself.
> The parameters are taken from Aim-TTi's public information, and the specific details are subject to the original manufacturer's datasheet. QN TECHNOLOGY can coordinate with your list of tested components, recommend suitable circuit configurations and current settings, avoid overbuying or underbuying, and help you identify which interfaces are truly necessary for your project.
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