Questions tagged [totem-pole]
The totem-pole tag has no usage guidance.
27
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Some Advice on a Failed Totem-Pole Circuit
I'm adapting a pre-existing circuit based on an ATTiny13. The original circuit has PWM output pins from the ATTiny either sourcing or sinking current for the centre point of two standard LEDs in ...
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1
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Active pull-down in LSTTL totem-pole output
The lower totem-pole transistor of a LSTTL IC frequently has an active pull-down from base to emitter (ground). Here is an example from TI's SN74LS93 datasheet.
I was curious how this active pull ...
- 25.3k
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The resistor is over heated in my totem pole circuit
This is my totem pole circuit:
It works well, but R32 is too hot.
This is scope:
I changed R32, R34to 470 ohm, but I got the same result:
I think the resistor value is the problem. How can I fix ...
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1
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1
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Totem pole MOSFET driver does not turn off
I'm trying to drive a 12-24 V DC motor with MCU PWM output. My design is based on a totem pole gate driver
First I use a voltage divider to provide the full-on gate voltage (10 V) for my power MOSFET.
...
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1
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1
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Selecting PFC topology
I'm considering different PFC topologies for the AC-DC stage of a device around 1 kW with aim of optimizing for efficiency and secondarily component size. This far I have identified following options:
...
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1
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EGS002 48 to 220 V inverter using IGBTs [closed]
I'm trying to build a 48 to 220 V inverter using IGBTs.
The problem is that when I put on a resistive load (1500 W tea kettle) it works fine, but when I put on a inductive/capacitive load (1000 W arc ...
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1
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2
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436
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BJT circuit with totem pole output
In the circuit above, I don't understand how to close and open the BJT that I circled.
To be specific, I think that when I give input 1 the circled BJT should be opened, but how? What is the voltage ...
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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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1
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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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4
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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 ...
- 3
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1
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393
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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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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 V. It gives some satisfactory results for its range, but I would like for it ...
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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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