One of the most common complaints from power supply designers is that the power supply is always the last part of the design process. It seems that after most system design arrangements are over, someone will think: "Hey, we still need a power supply."
Brick power supplies are ideal for telecom applications. You only need to put the power on the board and you can use it without much design work.
Many times, the initial design of the product will have a budget that can carry the cost of the module. However, after entering the production phase, this amount began to increase. The finance department will then focus on profit margins and demand new products to reduce costs. The first thing that comes to mind at this time is the power supply.
Discrete design makes it easy to reduce power module costs More than 50% . Of course, compared to a single module, it is also necessary to consider the required acyclic development work and the assembly cost of a large number of components. In high-volume products with sufficient development time, power supplies built with discrete components are also very reasonable.
This is where you can really take advantage of PowerLab resources. A lot of design work can be done with just the right power supply design knowledge. This can significantly reduce development costs and risks.
Some PowerLab designs are even pin-compatible with industry-standard brick packages, allowing power prototyping to be applied directly to existing systems and performance comparisons with the module. Most of the module replacement designs in PowerLab meet or exceed the module's performance specifications.
Discrete design example: PMP7451
Of course, in addition to the time limit, there are other reasons to use the module. For example, the module not only has a lower risk, but also has a size advantage. In order to store the most power in the smallest size, module manufacturers invest a lot of time and money, which can be reflected in the price. There are also many systems that do not require an absolutely minimized size, or the space that provides power is not the best 0.9" x 2.3" rectangle.
If you are worried about reducing the power costs of telecom applications, or just being curious about it, I would like to share with you some of my most satisfying alternatives to brick power...
PMP8861 — 18~72V input, 12V/10A quarter brick design;
PMP7451 — 36~75V input, 12V/10A eighth brick design;
PMP6886 — 36~72V input, 2.5V/5A one-sixth brick design;
PMP5364 — 36~72V input, 5V/10A quarter brick design.
In short: use modules when time and development resources are tight; use discrete design when costs predominate.
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