Realization of Reuse Function in POWER PCB Design

writer: G March 20, 2018

Reuse should pay attention to the implementation of the reuse function:

As a prerequisite for a successful reuse: the reuse must be the same part type, the same or similar network, the same decal package as the reused part. For the circuit designer to pay attention to is the 'the same part type', requires the use of the same logic family, this point must be done before the schematic import pcb file, because after the import pcb, the logic family can no longer be modified (Probably a powerpcb bug), which can't be reused;

Different layers of the pcb board can also cause reusability. The solution is (1) if the number of layers in the reuse is not enough, you can open the `layer definition' dialog in `setup', increase the number of layers of reuse, and reuse; (2) if the number of layers in reuse is exceeded, you can also Take the method of (1) to reduce the number of layers, but generally speaking, the structure of multi-layers in the original reuse must have its use, so it is not recommended to reuse; or to increase the number of pcb layers in the new design, but it must be Increase long-term costs, so, when (2) occurs, usually do not re-use;

Before generating a new re-use, it must be ensured that all the devices to be called by the re-use must be devices with no traces. If there is a trace, the software will be considered as a device that has already been used and therefore will not be called. Can't resease; Remove the wiring of the connected device, one of the tricks is to select the device in the schematic (POWERLOGIC) (other schematics can not be synchronized to modify, so you can only choose in the POWERPCB, and then break), and then Breaking in the POWERPCB, you can remove the connection, not one by one to find and delete, can improve efficiency.

When new reuse is generated, the corresponding traces, vias, copper strips, 2D lines, and text will be automatically generated. Therefore, some independent 2D lines, etc., can also be reused to be transferred to a new design, such as a 2D line. Shida's network standardization can be re-used to tune in, thereby reducing the added time. In this case, the generated text is all WARNING, you can ignore it;

Pins of all devices in the principle design have corresponding corresponding numbers. Therefore, in the new design, it should be noted that the pin connection sequence should be the same. This point is mainly reflected in Obstruction and tolerance are easy to ignore. In a particular design, it was found that the power supply filter capacitor could not be re-used. After testing, it was found that only one pin of the capacitor is grounded and the pin can be re-used when connected to the pin. Therefore, it is hoped that the subsequent circuit design will maintain the same pin connection.

When generating a reuse, it often happens that the generated reuse is contrary to or chaotic with the lines connected to other devices. This often occurs when a resistor is connected to other devices. The reason is that because of the resistance of one end of this part, it has a similar Network properties, but the other end is different, so when calling the reuse, when calling these classes is a network, the location is randomly arranged, causing confusion. To avoid this, it is necessary to make the line of the part that you want to re-use as complete as possible. In this case, the call is close to a one-to-one correspondence, which can be avoided;

When reusing is called, the software system will generate a powerpcb.err file. The document will indicate the reason that the file cannot be regenerated. Therefore, you can refer to this document to modify pcb or reuse to achieve the purpose of reusing. 

The main points to note are the following: 

a) Look at the "Component Matching Types". This table will list all the devices in the reuse and the packages and all devices and packages that can be called in the current design (that is, no wiring), and must ensure that the current design of the device must be more Equivalent to or equal to the device required for reuse;

b) See "Matched/Unmatched Components". This table will list all devices that match and not match in the current design. In the last "matched", it will indicate whether the device matches, `yes' is a match, not The pipe and `no' are not matched and must be noted; referring again to the reason of mismatch in the inside, some large devices (devices with more pins) may have some network lines not running and thus cause mismatch, which can be found in the pcb. Then take some of the parts and try again again; some devices may not be connected to the network, such as: 5), the circuit designer must be required to modify the connection of the schematic and try to reuse; some devices (usually very few devices) may modify the schematic It may not be able to achieve reuse, but when they are generated, they are removed and reuse is implemented.