I need to implement a circuit to generate two short (2usec) pulses, one positive and other negative (+-16V and 4A) to SET/RESET a magnetic sensor, HMC1001. Here the design proposed on the datasheet:
First I made a simulation on www.circuitlab.com, here my schematic:
The output is not even near 16V and 4A... I don't have the expertise to evaluate what's wrong on this circuit. Any help will be welcome.
You have your N channel and P channel devices swapped. The P-channel 9530 should be on the +ve rail, driven by C1, the N-channel 530 on the GND rail.
If you were to build the circuit they propose, using that specific 7106 part and the pinouts they specify, then it would work. However, they have drawn their diagram of the 7106 incorrectly, and swapped the diagrams of the P-channel and N-channel devices, compared to the 7106 datasheet. You have followed the P and N channel pictures, and put them in the wrong places for your simulation.
Thing to look for, on the proposed design, the FET that uses pin 3 has a 'to gate' arrow, whereas the IRF7106 datasheet shows a 'from gate' arrow on the pin 3 FET.
I've worked with the HMC1001 before. I can't speak for your simulation. I would use LTspice to simulate it, The biggest problem I see here is the wrong mosfets. If your going to switch them make sure you match all of the characteristics and know about mosfet characteristics.
It doesn't matter so much the current, but the voltage at the load of the HMC1001, make sure you don't have too many parasitics in your real-world design as that was a problem for me. There was too much series resistance in the cabling to the HMC1001. One way to overcome this is to up your Vcc or V1.
