So here is the latest teaser. This is an initial run of the HPMhb-150A with 12VDC batt input running a wiper motor. The thermal and current overload features are not yet active (they will require firmware for the ATtiny mcu), but the optocouplers to separate logic from power circuits are fully implemented. This test was a preliminary one where only 1 MOSFET per quadrant is used. The full compliment will be 4 per quadrant for a total of 16. Rated at 75A each, that would be a max continuous of 300A with proper heat sinking and fan (already fully designed).

A DC-AC Isolated Battery Inverter Using the HIP4082 AN9611 Rev.1.00 Page 3 of 14 Feb 2003 each power MOSFET also control di/dt. Stray inductance between the filter capacitor and the positive and negative bus. I need an H-bridge to run a dc motor both directions. So, for bidirectional DC motor control, is the Intersil HIP4082 a decent choice?

The heatsinks on this test are just basic ones. It is conservatively rated at 150A, and that is the limit of the current sensor used. I just tested with dual-batteries at 24V, and the input can be up to 48V nominal, allowing for the slight over voltage of fully charged batteries. You can see it in operation here. Little thing called love lyrics. Click to expand. Hi, The OSMC motor controller is similar but it miss a lot of features that HPMhb-150A has.

Let me name few: -Optocouplers to isolate completely the logic from the power part, -Single PWM input (speed) with two digital direction controls, to be fully compatible with AMC motion controller, and ability to daisy-chain two HPMhb-150A boards through the same control cable. -Watchdog microcontroller that monitors current and temperature level to automatically shut down the h-bridge in case of emergency, saving the mosfets. -Possibility for I2C communication between AMC and the watchdog microcontroller to set the current and temperature level limits. Saxon phonics program lesson 450. First off, let me give credit where credit is due. The OSMC board design is the basis from which I began the design of the HPMhb-150A. That H-bridge is a tremendous development of simplicity and size to output capability.

It has consistently proven itself in robotics. But, after burning through numerous MOSFET trying to drive high powered motors with the excellent DSMhb, it became obvious that not only a more powerful H-bridge was needed, such as the OSMC project, but one that had generous and multiple protection features built in! So began the HPMhb-150A and Thanos' generous help with the design mission. Thanos has just stated the main differences, but there are a few more such as. -thermal and current overload components built in -slightly larger size to allow for much larger heatsinking -better connection facility using bolts/lugs for higher current capacity -onboard main fuse protection -additional 5V supply (besides 12V) dedicated to the power section -much thorough power supply filtering for 5V, 12V, and Batt V inputs -more flexibility using jumpers in how the power supplies are distributed -very large planes for the power supplies and motor drive lines (no need for trace buildup with solder). -included more TVS (Transient Surge Suppresion) components -motor drive LEDs which can be remotely mounted to enclosure facia I wish to thank all those who participated in the design of the OSMC, for without them, this project might not have developed quite so fast and efficiently (i.e. Less mistakes).

But there is more work to be done to finish the project, with thorough testing before release. I think I explained with the phrase: Possibility for I2C communication between AMC and the watchdog microcontroller to set the current and temperature level limits. It will save your time from removing the Attiny45 chip to reprogram it with other Temperature/Current limits.!!!! Its just a stand alone watchdog protection circuit!!!!!!!:lol: Ian's software can talk through serial protocol to my AMC1.5 and then the AMC1.5 can move the HPMhb-150A as simple as that. The HPMhb-150A cannot be moved by the I2C signals that Ian's Picaxe hardware have.