Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
Max The Magnificent
User Rank
Author
Re: New Cadence TimingVision Technology Speeds PCB Interface Design
Max The Magnificent   4/12/2015 11:20:33 AM
NO RATINGS
@alpa17: ...A note on designing power distribution networks...

Thanks for sharing this with the rest of us

alpa17
User Rank
Rookie
Re: New Cadence TimingVision Technology Speeds PCB Interface Design
alpa17   4/12/2015 10:06:10 AM
NO RATINGS

While the pcb designer is working on routing and laying out the design, the hardware design engineer also faces the task of reviewing the design in allegro editor sometimes on a daily basis and collaborating with the pcb designer on ideas and solutions on high speed dense designs.  Providing an efficient solution described above with timing vision to detect and resolve design rule checks is an excellent benefit for the end users.

A note on designing power distribution networks

After the high speed critical nets are routed, with no other routing complete,  the power planes should be routed and corresponding bypass capacitor placement finalized. Then Sigrity can be utilized with an spd linking toolkit that imports the allegro editor design into sigrity power signal integrity toolkit, s parameter models of capacitors can be included, ESL, ESR and capacitor values can also be manually added, circuits selected, settings selected,power nets selected and impedance charts can be created on a specific frequency sweep. Based on these results, modifications can be made to the design. In my experience I have found completing this task earlier in the design process to be more efficient than conducting power integrity simulations towards the end of the design and then trying to modify the stack up to improve results.



Radio
LATEST ARCHIVED BROADCAST
As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Like Us on Facebook
Special Video Section
The LTC®6363 is a low power, low noise, fully differential ...
Vincent Ching, applications engineer at Avago Technologies, ...
The LT®6375 is a unity-gain difference amplifier which ...
The LTC®4015 is a complete synchronous buck controller/ ...
10:35
The LTC®2983 measures a wide variety of temperature sensors ...
The LTC®3886 is a dual PolyPhase DC/DC synchronous ...
The LTC®2348-18 is an 18-bit, low noise 8-channel ...
The LT®3042 is a high performance low dropout linear ...
Chwan-Jye Foo (C.J Foo), product marketing manager for ...
The LT®3752/LT3752-1 are current mode PWM controllers ...
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...