Power integrity(PI simulation analysis)
When the current flows in copper sheets, voltage drop always occurs as a result of copper sheet resistance.
The voltage drop may be determined by the simulation software and voltage change may be compensated by means of selection of proper feedback points.
As current distribution is uneven on the copper sheet and via-hole, over high local current density shall be prevented, otherwise, it may burn the board.
Simulation can rapidly position areas with high current density, which helps you to make correction at the early design stage.
Planar resonance analysis
Power plane and GND plane compose a resonant cavity, which may produce space resonance under the excitation of high frequency.
may be produced if key parts are placed near resonance points. Key parts shall be placed away from planar resonance points, especially those close to
working frequency points of parts. Simulation may easily determine the existence of such resonance points.
PDN impedance analysis
In order to meet the input requirement, the power network shall keep low impedance within certain bandwidth scope.
Simulation may be used to analyze
the performance of power network.
Capacitor quantity optimization (Cost down)
It is difficult to get a reliable reference to capacitor quantity only by experience. However, simulation can rapidly get an effective power solution by
iterating capacitor quantity, distribution, and cost.
SSO power noise simulation
The power will fluctuate in a certain range when multipath signal output meanwhile, and superpose to the signal for propagation, resulting in SSO noise.
By means of joint simulation, we can analyze the influence to the signal quality by the planar noise of power supply.