MCP1406/07 MOSFET DRIVER

[Jeg]

Hi to all
Does anyone have a circuit diagram for this driver? I am searching through web but nothing. My main question is what kind of input does it take to pin2?

Do you have something else to propose me for fast mosfet switching?
Thanks

http://ww1.microchip.com/downloads/en/devicedoc/22019a.pdf

[gyulasun]

Hi to all
Does anyone have a circuit diagram for this driver? I am searching through web but nothing. My main question is what kind of input does it take to pin2?

Do you have something else to propose me for fast mosfet switching?
Thanks

http://ww1.microchip.com/downloads/en/devicedoc/22019a.pdf

Hej Jeg,

The link you included is in fact the data sheet of the MCP1406/07 MOSFET driver IC.  As such, it answers most of your questions, just read it through.

SO it says pin 2 is the (high impedance) input (TTL/CMOS level compatible with hysteresis), except for the TO-220 case where  pin 2 is the negative rail (ground). 
DO not expect a detailed circuit diagram for such drivers, most manufacturers do not disclose them in detail, in most cases some active device circuit symbols are drawn with block diagram-like additions like in this case too.
Data sheet also includes what other driver ICs are compatible with these types.

[Jeg]

Thanks gyulasun

I was trying to find something to guide me. I hadn't realized that it needs TTL pulses in the input.

Do you have something to propose me for input? I'd like to have frequency control up to 1 or 2 MHz and duty cycle range from 1 to 99% or close. I don't want microcontrollers, i'd like something simpler. If i will not find something i will use a 555 and a comparator.

I just show on 555 datasheet and it can't go in MHz range. Anyway i'll search more!   

[gyulasun]

Well, I would recommend you the newer CMOS version of the old NE555, it is the LMC555 or TLC555 and these timers are able to run up to 2 MHz at least.
Here is a link to a schematic with LMC/TLC555 and with independently variable frequency and duty cycle controls:
http://www.overunity.com/8597/solid-state-orbo-system/msg234095/#msg234095

From another member too, but using another CMOS version of the 555, with at least 1 MHz upper frequency, also independent variable duty and frequency control:
http://www.overunity.com/8411/steorn-demo-live-stream-in-dublin-december-15th-10-am/msg243175/#msg243175   

Data sheet for the LMC555: 
http://www.ti.com/lit/ds/symlink/lmc555.pdf   

The driver IC you asked with the data sheet accepts not only TTL but CMOS level inputs too, the above circuits can directly drive it. 

[Jeg]

Well, i remembered a PLL circuit that i had built a few years ago.
http://www.sm0vpo.com/use/synth-00.htm

If someone wants to use it, the only mistake on the diagram is at 4046 Voltage Controlled Oscillator (VCO). It needs pin 5 to be grounded. Works fine!

But, i think i 'll use the 555 solution. Simple enough and  fits for my application. Thanks for the links