The Stack Overflow podcast is back! Listen to an interview with our new CEO.

Questions tagged [schottky]

A Schottky diode typically has a lower forward voltage drop and faster switching speed than a standard silicon diode. Several forms of transistors also use the same Schottky barrier effect such as MESFET to increase switching speed while others include a Schottky diode as a form of clamping.

14 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
0answers
56 views

Factors affecting the \$V_f\$ of a Schottky diode

The usual wisdom about Schottky diodes is that their \$V_f\$ is around 0.2 to 0.3 volts, but what specifically determines this? I know that for p-n diodes, doping concentration can affect the forward ...
2
votes
0answers
48 views

Are there BJTs based on metal-semiconductor junctions?

So, I know that the fundamental part of a BJT is having a very thin base region that allows minority carriers to diffuse through it before they recombine. It seems to me, then, that it should be ...
1
vote
0answers
44 views

Using schottky diode near reverse breakdown region

I am currently using a 1N7070 schottky diode as the output rectifier for a flyback converter. The designed reverse blocking voltage is 70V. However, due to leakage elements I am seeing a transient ...
1
vote
0answers
26 views

Effect of Schottky diode capacitance for LM2596-based buck converter

I select a schottky diode to output a DC / DC converter. Found several SMD SS52 options. One option has a capacity of 800pF, the other 200pF. The smaller the capacity, the better? The version with ...
1
vote
0answers
90 views

LTC3780 for charging batteries (backflow protection)

I have very little experience with these type of things and I couldn't find the answer anywhere else. I want to use LTC3780 module with ATX PSU to primarily charge batteries (deep cycle battery and ...
1
vote
0answers
1k views

Inductorless DC to DC step up converter

I'm trying to make a DC to DC boost converter without inductors. Actually, I don't know much about this kind of circuits. I did a research on the net and I found the circuit below. But the problem is ...
0
votes
0answers
41 views

Over voltage protection without shorting the Output to GND during Over voltage

Here is the circuit diagram i am referring. Vin_12v_ext - Max 12V; Batt_V = max 5.4V; Vin_ext_12v_gen is either Vin_12v_ext or batt_v; 5v_reg - is either generated by an on board regulator or ...
0
votes
1answer
97 views

Schottky Diodes as Full Bride Rectifier

I need to make a 75-100vdc high current power supply. I do not have any high current diodes or bridge rectifier ic’s but I do have a load of scrap switching power supplies. Could I take 4 of the(lack ...
0
votes
1answer
21 views

Schottky datasheet - divergence in Vf / If diagram vs “pulse test” table values

while looking at datasheets for clamping schottky diodes, I noticed that the values that manufacturers state in their tables ("Pulse test: tp < 300 µs; delta < 0.02.") are different from the ...
0
votes
0answers
32 views

intrinsically matched Schottky diodes (sharing common substrate)?

I'm looking for a pair of Schottky diodes on a single die: one to use as a non-linear element and one to measure the temperature. All of the dual Schottky's I've found so far are on separate dice, ...
0
votes
0answers
81 views

Why can't I get the output of a 74LS221 to idle at 5 VDC?

I have an industrial machine with an encoder feeding a Measurement Computing USB-CTR08 counter board. In order for the board to count the pulses the counter's gate ...
0
votes
2answers
50 views

noise comparions between Schottky and MOSFET

I have a circuit that uses a Schottky diode to provide reverse voltage protection. However, the diode chosen is on a long lead time and an alternative that is immediately available is required. I've ...
0
votes
0answers
57 views

Diodes for mixer design

For a diode ring mixer, how should I choose the types of diodes? I've seen Schottky diodes as the primary choice. but why not PIN diodes? What diode aspects should I consider when designing a mixer? ...
0
votes
1answer
424 views

Protect battery from overvoltage - DC brushless motor overspeeding condition

I'm trying to figure how to protect batteries from overvoltage on my electric skate. Specific condition is : motor would run above max RPM based on system voltage. Motor is 85Kv, battery voltage is ...