Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

How to simulate a startup circuit of a bandgap?

Status
Not open for further replies.
site:edaboard.com start up temperature

Possibly transient analysis with a step on the supply voltage
 

analogartist said:
Any methods?
Click to expand...


You can run transient analysis to check the start-up cell, most concenstration should be focus on this cell's current and its voltage, you can try to broke the startup point and re-simuate the bandgap, I believe you will find an occult difference between these cases.
thanx.
 

various slop supply voltage must be used for the start up simulaiton
 

Before simulation you should estimate the actural power up time. Then run simulation with different power up time.

Added after 3 minutes:

In addition, you must simulate start up of all corners and temperature The corners of mosfet, bjt and resistor should be uncorrelated.
 

Transient analysis is enough to simulate a bandgap circuit.
 

jinxingsun said:
Transient analysis is enough to simulate a bandgap circuit.
Click to expand...

but simulation startup must do rampup
you can tyr it
 

trying setting up initial condition such that your current mirror is off in the beginning. see if the start up will push it to the operating point.
 

transient analysis on power supply or pwl stimulus
 

Will the transient simulation show the real chip behavior of bandgap including start-up circuit? I mean if the model was correctly characterized.
What will be other factor to let bangdap fail when wafer is out if WAT data is OK?
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top