Competitive Advantages

TopoR allows to reduce design time up to several times

Instant routing of 100% of wires on a board
TopoR provides 100% routed layout almost instantly within a few seconds. All connections are routed even if technological constraints are violated. Autorouting is followed by the multiobjective optimization by calculating different variants of laying wires. During the optimization process the overall wire length is optimized as well as the number of vias and places with smaller clearance.
The routing process can be stopped at any moment, and the engineer can immediately define the technical possibility of routing the board within the limits of the specified number of layers, defined clearance size and other technical limitations based on the routing density and the amount of technical constraints violations. This helps to avoid waiting for many hours which is typical for the traditional autorouters. Engineers using the traditional systems can spend significant amount of their time trying to get the suitable results for different variants of routing strategy.

TopoR is capable of performing parallel computing, speeding up the result achievement by many times
TopoR can perform parallel optimization of several alternative topology variants, which differ in optimized parameters, while a user is offered a choice of selecting one or several variants. This feature allows for organizing the distributed routing - parallel topology optimization by using several processor cores and/or several computers within one local network. This allows to significantly reduce machine time especially for routing complex multi-layer boards.

The innovative topology router significantly increases engineers' productivity
TopoR support two types of manual topology routing of PCBs - graphical and topological. Topology router automatically calculates the optimal shape and wire positioning in terms of the defined topology. This allows engineers to concentrate on the topological aspects of design without paying attention to the wires shape and observing technological restrictions. Touching or even number or wires intersections is not considered a violation. It is sufficient to push a button and move to the topological mode to "string" the wires automatically and move them to the necessary distance.

"One of our boards has been routed by a qualified engineer for 2 weeks. In order to study the capabilities of TopoR CAD system we passed this task to Eremex specialists and were impressed to learn that they have done this job within an hour. Moreover the majority of work was done by automatic routing with minor manual corrections. However the routing quality was better then the quality of our variant."

	The board that was routed manually during a 2-week period. The number of vias - 510. Trace length - 6.5 m.
	The board routed by TopoR within an hour (20 min for autorouting and 40 min for manual routing). The number of vias - 432. Trace length - 5,11 m.

TopoR ensures the exceptional autorouting quality

Isotropic routing with arcs ensures the most effective usage of board surface
TopoR topological router is distinguished by having no preferred routing directions, which are divisible by 45 degrees. Any-angle routing ensures more efficient space usage. Additional advantage is provided by using routing with arcs and arc approximating lines. The whole board surface is used more efficiently when using arcs. In many cases it can ensure the maximum possible and at the same time equal conductor spacing. This can be critical for example for differential pairs.

TopoR supports two modes for the optimal routing of single-layer boards
TopoR CAD system is the leader in providing highly-optimized algorithms of single-layer PCB design. The results which are comparable to manual routing can be achieved due to usage of efficient algorithms for minimizing the quantity and length of jumpers. The most widely-spread CAD systems including the best ones cannot fulfill such tasks.

	TopoR has automatically routed a single-layer PCB without jumpers in less than 1 second.
	A high-class Shape based router was unable to fulfill the task (only 56,3% of circuits were routed).

TopoR is the irreplaceable tool for flexible PCBs design
TopoR is capable of minimizing the number of vias which makes it the preferable autorouter for flexible PCBs design. Flexible PCBs consist of the sets of interconnect wires which can contain single-layer, two-layer or multi-layer structures. The boards can be as completely flexible so representing a combination of flexible and hard components. Typical requirements for wires in the flexible part of the PCB include:
- perpendicular alignment towards the bending direction;
- staggered positioning on the neighboring layers;
- no metalized vias are allowed;
The image below shows a flexible PCB topology which was made by a popular Shape-based router. We should note the presence of vias in the bending part, significant number of wires which are positioned closely under each other on the neighboring layers, and the segments of wires which are angled at 45 degree towards the bending direction.

A flexible PCB topology produced by a popular Shape-based router (overall wires length is 346 inches, number of vias - 61).

The same board routed by TopoR does not contain vias and at the same time has smaller overall wires length.

A flexible PCB topology offered by TopoR (overall wires length is 322 inches, number of vias - 0).

TopoR ensures significant reduction of vias and the overall wires length in comparison with other auto-routers
Using unique routing algorithms, TopoR provides unsurpassed characteristics in minimizing the number of vias and total wires length on the designed board. As a result, TopoR allows to design the same PCB with less number of layers and/or having less size and/or becoming more cost-effective and/or providing better electromagnetic compatibility particularly due to increased spacing between wires.
You can find below the examples of autorouting made by a popular standard autorouter and TopoR autorouter for the same board with equal technical constraints. TopoR autorouter routed the board on 2 layers instead of 8 with fewer of vias and less wires length.

	The board routed by the popular standard autorouter on 8 layers (overall bond length - 48m, number of vias - 1619).
	The same board routed by TopoR autorouter on 2 layers (overall bond length - 42m, number of vias - 1235).

TopoR CAD system is the leader in basic standards for complex multi-layer boards as well. The table below represents the results of comparative testing between TopoR autorouter and 3 different popular autorouters.

A unique quality of BGA components routing
Due to absence of preferred routing directions in layers and deep level of optimization TopoR provides quality routing of contemporary BGA components, which is traditionally a very difficult problem for other routers. In case of using BGA components the number of layers often depends mostly on the maximum quantity of levels of such components and adopted technical design rules (minimal lead width and minimal clearance).
In a number of CAD systems BGA component internal space routing is performed according to a template, because the main purpose is to avoid blocking pads and to lead all routes to the component's outer edges. But prescribing the mandatory routing directions results in layout deterioration and does not consider the fact that if a microchip has equipotential and non-connected pads, then in some cases the number of layers needed to provide connections can be reduced. The special BGA components routing algorithms used by TopoR which consider positioning of bypass capacitors, allow to provide the best results for the most complex and saturated contemporary PCBs.

	BGA area routing performed by TopoR autorouter.
	BGA area routing performed by a high-class Shape based autorouter.

Routing quality is improved due to considering of components leads logical equivalence.
One of the unique features of TopoR CAD autorouter is the ability to consider logical equivalence of components leads. The autorouter automatically moves wires from one component lead to another if this results in PCB topology optimization. All the changes are tracked in the ECO file which can then be imported to a schematic design system.

	Topology of a PCB routed without considering logical equivalence of components leads. The number of vias is 67, overall wires length is 5.21 meters.
	Topology of a PCB routed with a condition of logical equivalence of all FPGA microcircuit components leads. The number of vias is 17, overall wires length is 3.79 meters.

TopoR provides the best results for electromagnetic compatibility and interference immunity of PCBs

Smooth, non-bent wires ensure the most "comfortable" path for signals of a PCB
At the place where a conductor makes a 90-degree turn, signal bouncing may occur. This happens mainly due to the change of wire width. At the corner the route width is increased 1.414 times, which results in transfer line parameter discrepancy, and especially to distributed capacitance and self-inductance of the line. Arc-shaped smoothing prevents signal bouncing resulted by discrepancy of distributed capacitance and self-inductance of the line.

Routing isotropy, minimum wire length and less number of vias provide better electromagnetic compatibility, minimize crosstalks and improve signals quality
If two conductors are positioned close to each other, they cause capacity coupling and reaction coupling between them. Capacity coupling is influencing the conductors which are positioned one above another on the adjacent layers, because they practically create a long anodized-film capacitor.
Absence of preferred routing directions in TopoR CAD system allows to ensure that designed boards have practically no long sections with conductors that are parallel on the adjacent layers. Capability of assigning minimal (in narrow spots) and nominal clearance between conductors significantly reduces the amount and length of narrow spots on the layer. All this coupled with TopoR advantages in overall wires length minimization ensures exceptional characteristics of designed boards in terms of electromagnetic compatibility and interference immunity.

A PCB designed by a high-class Shape-based router:	The same board routed by TopoR:
Crosstalk modeling results:	Crosstalk modeling for the PCB routed by TopoR:

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