Questions tagged [totem-pole]

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36V P-MOS - PWM driver circuit - totem pole - reduce BJT peak power

I want to use a totem pole BJT driver for a P-channel MOSFET. Various google searches brought me to the following circuit: In Olin Lathrop's answer to this question it is quite well described. pull-...
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Are three-phase bridgeless boost, three-phase totem pole and active 6 switch rectifiers different names of the same topology?

I keep coming across these topologies in several references and they look similar but the names are used interchangeably. I wish to know if these are same, and if not, what is the difference between ...
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Reproducing ST Design Gate Driver

I try to reproduce the buck-boost converter from the "STM32F334 Discovery" board. Therefore I have drawn a KiCad Schematic and assigned the appropriate spice models. But unfortunately, I'm ...
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How to generate opposing outputs at 24V from 3.3V control signal

We have a set of 4 control signals at 3.3V. For each of these control signals, we want to generate a pair of output signals. For example, if \$control_1\$ is high, then \$out_1\$ is 24V and \$out_1inv\...
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Totem pole driver topology (inverting amp)

Hello guys this question is regarding a gap in my knowledge regarding transistors specifically the driver of the totem pole configuration. Based on the following figure And these results here: When ...
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How to make IGBT/MOSFET gate driver circuit (5-10V) using push pull with transistors

I was trying to drive the gate of 25N120 IGBT (2800pF gate capacitance) with the help of transistors. The working voltage is 10V. I have tried with BC548 NPN and BC558 PNP. Everytime I apply PWM, the ...
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Gate Driver Circuit Gives Unexpected Results!

I have designed around the LM5106MM/NOPB gate driver. Used two IPB017N10N5ATMA1 N-CHANNEL MOSFETS. This circuit has actually been used in another design in production by a engineering group beyond my ...
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Totem pole Bjt based Mosfet Gate driver

I need to design a totem bole bjt based gate driver for Mosfet IRF640, which is going to be used in a Buck converter. I know the peak gate charging current= 1A. I've already selected my ...
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1 answer
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High Voltage Totem Pole Driver

I have the following MOSFET driver circuits for high side P-Channel MOSFETS. The circuit works for supply voltages up to 20 volts. It gives some satisfactory results for it's range, but I would like ...
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Inverter Mosfet Driving with Isolated Totempole Supply

simulate this circuit – Schematic created using CircuitLab I'm trying to make an inverter and I'm driving my mosfets with totempole configuration, the thing that confuses my mind is: Totempole ...
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TTL NAND logic circuit

how can find the maximum fan-out of the TTL-NAND gate using LTSpice ? i tried to solve problem by hand, but the problem how to find fan-out using ltspice
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Totem Pole / Push Pull Circuit is not working properly

I have a simple switching circuit around 500Hz with 120V supply using Push Pull mosfet with high resistive load showed below but the output was not as expected, like this the blue line is the ...
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8 votes
2 answers
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Difference between Push-Pull and Totem-Pole

I can't understand/see the difference between a push pull, for example a circuit like that: And a Totem-Pole: Have these circuit a transistor in the input so for get a thing like "double ...
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High speed parameters for transistor [closed]

How to choose a Bipolar Junction Transistor (BJT) for a switching frequency of 400KHz.
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1 answer
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TTL NAND gate (totem pole) current and voltage analysis

I am working on a few practice problems for my course and I am unsure about my working throughout. hoping for some feedback and guidance from the community as it's not my strongest topic. Here is ...
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3 answers
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Driving a 12V LED strip with an Arduino

I have 60 watt LED strip I want to control with an Arduino (the Genuino Mega 2560 actually). I found this tutorial which shows you how to do it for a white LED strip, but I am not sure whether I can ...
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3 votes
2 answers
930 views

Original 555 timer transistor output implementation

I am a beginner casual electronics hobbyist trying to learn about how chips work internally. In order to accomplish, this I went out and got a 555 timer soldering kit and started experimenting with it....
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Totem pole vs open collector configuration

Can anyone please explain for power consumption view point only whether totem pole or open collector should be preferred with a bit explanation?
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2 answers
1k views

Criticize Totem pole + Level Shifter topology

I'm designing a FET gate driver that allows 1.8V MCUs to control FETs up to 100kHz. FETs to be used will vary a lot so I'd like to have as much current drive as I can. I need it to be based on ...
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2 answers
324 views

Achieving higher current at the lowside MOSFET to pulse LED

I have attached the following circuits which i have been developing overtime. The OBJECTIVE is to get as high as possible a current at the gate of the MOSFET (VF1) to achieve faster pulse times of ...
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1 vote
2 answers
1k views

Can I create a totem-pole structure by using two optocouplers?

I have two optocouplers. One of them uses NPN transistor and the other one uses PNP. Each of them explicitly give the base pin of their BJTs out. Can I make a totem pole structure by connecting them ...
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2 votes
1 answer
1k views

Using cascaded totem-pole structures to supply more current for gate driving

simulate this circuit – Schematic created using CircuitLab I want to drive a totem-pole structure with a logic gate. The problem is, the logic gate can only supply 8.8mA output sink/source ...
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13 votes
2 answers
11k views

Why doesn't shoot-through occur on totem-pole structure?

I'm designing a totem-pole by BJTs in order to drive a MOSFET. I studied on several online examples and built up my circuit according to what I understood from them. However, there is a detail which ...
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