MAX25240
Recommended for New Designs
The MAX25239/MAX25240 are small, synchronous, buck-boost converters with integrated H-bridge switches. These ICs provide a fixed-output regulation voltage...
Datasheet
MAX25240 on Analog.com
LTC4366
Recommended for New Designs
The LTC4366 surge stopper protects loads from high voltage transients. By controlling the gate of an external N-channel MOSFET, the LTC4366 regulates the...
Datasheet
LTC4366 on Analog.com
LTC7860
Recommended for New Designs
The LTC7860 high efficiency surge stopper protects loads from high voltage transients. High efficiency permits higher currents and smaller solution sizes...
Datasheet
LTC7860 on Analog.com
LTC4364
Recommended for New Designs
The LTC4364 surge stopper with ideal diode controller protects loads from high voltage transients. It limits and regulates the output during an overvoltage...
Datasheet
LTC4364 on Analog.com
LT4363
Recommended for New Designs
The LT4363 surge stopper protects loads from high voltage transients. It regulates the output during an overvoltage event, by controlling the gate of an...
Datasheet
LT4363 on Analog.com
Hi,
I require a MIL-STD-1275E surge stopper with input range 7-36V & output 36V. This will be conencted into a MAX25240 to regulate final output to 12V 2-3A as it is very efficient.
My circuit needs to continually operate during input distortions.
Reviewed:
www.analog.com/.../high-voltage-surge-stoppers-ease-mil-std-1275d-compliance.html
DN534
These solutions similar to what I need for my power input section BUT:
1. I'd like to replace the Reverse Polarity diode D1 with the solution in LTC4366 datasheet Figure 8. Is this a workable change?
2. Operate 7-36V nominally
3. Output 36V maximum. - Can I simply adjust the FB resistors?
4. Should I be looking at the LTC7860 instead?
1. I'd like to replace the Reverse Polarity diode D1 with the solution in LTC4366 datasheet Figure 8. Is this a workable change?
Looking through the article, the purpose of D1 is to block a -250V spike for 1us on the input.
The circuitry in figure 8 is for blocking reverse DC inputs. I don't think it would be effective at blocking transients.
2. Operate 7-36V nominally
This is a problem. The min input voltage for the LTC4366 is 9V. At this voltage range, you don’t need the LTC4366’s floating topology. Substitute with a different linear surge stopper.
3. Output 36V maximum. - Can I simply adjust the FB resistors?
Yes, that should do it.
4. Should I be looking at the LTC7860 instead?
You'd move to the LTC7860 if the load current was large (~10A), which doesn't seem to be the case in your application.
If you want ideal diode and surge stopper functionality in one IC, consider the LTC4364.
-Aaron
1. I'd like to replace the Reverse Polarity diode D1 with the solution in LTC4366 datasheet Figure 8. Is this a workable change?
Looking through the article, the purpose of D1 is to block a -250V spike for 1us on the input.
The circuitry in figure 8 is for blocking reverse DC inputs. I don't think it would be effective at blocking transients.
2. Operate 7-36V nominally
This is a problem. The min input voltage for the LTC4366 is 9V. At this voltage range, you don’t need the LTC4366’s floating topology. Substitute with a different linear surge stopper.
3. Output 36V maximum. - Can I simply adjust the FB resistors?
Yes, that should do it.
4. Should I be looking at the LTC7860 instead?
You'd move to the LTC7860 if the load current was large (~10A), which doesn't seem to be the case in your application.
If you want ideal diode and surge stopper functionality in one IC, consider the LTC4364.
-Aaron
