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Thanks for the quick reply KlausST.
There is a bypass cap on the board at the supply of the comparator LM2903YPT.
VDD5 is generated from an onboard LDO and its quite stable. There is cap of >10uF at VDD5 net.
There are provisions to add caps to filter the noise at U4 pin 3, U4 pin 2 and U3 pin...
Hi,
I need help with a circuit using two comparators (LM2903YPT) to identify overvoltage and undervoltage conditions on 12V supply.
If the supply voltage is within a certain range, the output shall be pulled up to 5V.
But if the supply voltage is out of the specified range, the output shall be...
Hello,
I am designing a PCB for a automotive application.
The PCB has few traces which is capable of carrying 150A of current for 12s. This is the worst case peak current for the given application.
But I need to also ensure that the same traces can handle 350A of current for a short duration...
Hello All,
I need help to develop a PCB for an embedded system which also supports High current.
Max. Voltage on the PCB : 56V
Max. Current on two traces: 150A for 10s, Nominal current of 120A for few mins.
Number of layers possible : 6 to 8 layers
5 MOSFETs in parallel (2mOhm Rdson)
Thermal...
Hello all,
I need to analyze lifetime of a product. For this analysis, The lifetime of ceramic capacitors is to be calculated.
The Ceramic capacitors' lifetime depends on the temperature profile of the product and the self heating of the ceramic capacitors.
How to calculate the self heating of...
Hi,
MAX17852 is new for me. I just glanced through the datasheet.
MAX17852 is a 14 cell Data acquisition IC and I feel that this is not suitable for your application.
Li ion cells max voltage - 4.2V, Min voltage - 2V (depends on Chemistry)
And min. VDCIN of MAX17852 is 9V. As you will be...
Thanks FvM for the quick reply. :smile:
So, IBIS models describes only the I/V characteristics of each pin. That explains why the hct1g08.lib file has a single pin component.
I have followed the translation instructions available on Orcad help and few other sources. Result is the same.
If its...
Hello,
I need to simulate a circuit which uses 74HCT1G08 AND gate. I got an ibis model for this AND gate.
I tried to translate it to spice model using IBIS translator in Orcad 16.6. Steps followed as shown below.
- IBIS translator in model editor.
- selected all.
- selected typical user...
Hello,
I am trying to simulate a R-L circuit whose parameters varies based on temperature.
I need to simulate two parameters at two different temperatures.
At Temp T1, R = R1 and L = L1.
and at Temp T2, R = R2 and L = L2.
By using parameter sweep, I can simulate only one parameter at a time...
Automotive grade components has operating temperature range from -40 degC to +125 degC, as the ambient temperature experienced by the components if used in engine compartment of the vehicle can go up to 125 degC.
Military grade components have even wider temperature range... starting from -50...
In different words, Practically, Inductance can vary with frequency (due to parasitic capacitance), temperature of core (permeability varies) and current (affects the losses).
So Inductance measurement should be done at conditions in which it is going to be used.
if application of an inductor...
Its a good idea to have only two control signals - PWM and DIR.
But the dead time between the High side gate signal and the low side gate signal has to be considered, to avoid shoot-through.
In the circuit using AND gate and NOT gates, AND gate output will turn on low side MOSFET,
where the NOT...
Are you asking "which configuration is better to use? PNP BJT as High side switch or NPN BJT as a low side switch to turn On/Off your sensor" ??
If this is your question and you want to use 12V as supply, you need to give 12V to base of PNP BJT to switch it off. Controller cannot give 12V...
It is recommended to charge the battery at 0.3C in constant current mode initially and then in constant voltage mode, as mentioned by FvM.
In your case, 1C = 2000mA. So, 0.3C = 600mA.
Charging the battery at a rate of 0.3C means that it takes approx. 3 hrs to charge the battery.
And Its safe...
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