TC4469 PDF

The TC/TC/TC devices are a family of four-output CMOS buffers/ MOSFET drivers with A peak drive capability. Unlike other MOSFET drivers. Microchip Technology TC PMIC – Gate Drivers parts available at DigiKey. I would like to use a driving chip by the name of TC It is a “Logic-Input CMOS Quad Driver”. I looked at the datasheet and found a circuit.

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Automotive Recommended Product Selector Guide. I looked at the datasheet and found a circuit diagram that I don’t completely understand.

I have attached a picture of the circuit that can be found at the bottom of this post I hope. The TCX drivers can source up to mA into loads referenced to ground. Only show products with samples. Thanks for all of the information. Buy from the Microchip Store. Typical motor supplies are not stable and not spike-free the 18V zener they show in the circuit is there to catch spikes and is requred to stop the motor frying the driver chip!

In many cases I’ve had a lot of problems as a result of back EMF frying mosfet and BJT components, it’s likely the diodes and resistors are providing this in the example circuit. In addition, all terminals are protected against ESD to at least V. Or in other words it’s to avoid shoot-through.

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When discharging, the current has to go out through the resistor. Could someone tell me why these diodes are placed in this direction? I am confused by this because I thought the diodes should be placed in the other direction, so there would be current limited on the way into the gate, and then the diode would allow the current to quickly discharge. To my knowledge, these diodes are currently bypassing the gate resistor and allowing the gate of the MOSFET to charge without any current limiting.

Sampling Options Buy Now. Heavily loaded clock lines, coaxial cables, and piezoelectric transducers can all be easily driven with the X series drivers.

TC – Power MOSFET Drivers – Power Management

Alternatively, I added a link to the datasheet, where the circuit can be found on page In Production View Datasheet Features: At this point, I am not sure whether I will be switching the H-bridge at high frequency 20kHz which is out of hearing range or not, but for now I would like to design my circuit with the capability of high frequencies.

The only fc4469 on loading is that total power dissipation tc449 the IC must be kept within the power dissipation limits of the package. That circuit only works from a stable 12V supply.

Application Notes Download All. Each driver has been equipped with a two-input logic gate for added flexibility. It has nothing to do with back-EMF protection; in figure it’s pretty clear that none is being used there.


Look at the datasheet for the HIPA to see how this sort of thing is normally done – with proper MOSFET drivers you get protection functionality like shoot-through prevention and under-voltage protection, which you need in the real world. MarkT Brattain Member Posts: For pricing and availability, contact Microchip Local Sales.

Please contact sales office tc44469 device weight is not available. The TCX series will not latch under any conditions within their power and voltage ratings.

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It sounds tc44699 a superior method. Looking at the datasheet, I’m guessing what you’re going to be using are two drivers? While it’s a different part, you may wish to look at the datasheet for the L H-bridge, it has a better example of how you want to configure the diodes: This seems to be how the datasheet wants you to do it odd.

Quick Guide to Microchip Development Tools. They are not subject to damage when up to 5V of t4469 spiking either polarity occurs on the ground line. Here is the link to the datasheet: Chagrin Faraday Member Posts: I would like to use a driving chip by the name of TC They can accept up to half an amp of inductive kickback current either polarity into their outputs fc4469 damage or logic upset.