H-Bridge for DC Motor Drive

MassMind DC Motor Driver

The TI754410 Can be configured as either four half bridges or two full h-bridges See also:

• http://www.ti.com/sc/docs/products/analog/l293d.html Texas Instruments L293DNE can handle up to 600 mA and up to 1200 mA peak. It is easier to use than trying to build the h-bridge using individual transistors. If the motor is going to change directions often, you may want to purchase a heat sink for the chip. The current through the motors increases dramatically when they have to stop and reverse direction, making the chip heat up.
  http://search.newark.com/part_detail.phtml?PART%5FID=250&VID=250&10005=06F9523 sold by Newark for about $3.00 a piece. $25.00 minimum
• The TI L293DNE can be replaced by using an L293D (500ma) or a TI SN754410 (1000 ma) - augmented with inverters to increase the current handeling capacity for a lot less money.
• http://www.ionet.net/~bschwabe/BasicStampII/1-pin.gif here is a neat trick.... uses two bipolar transistors and the TRISTATE ability of your pic.... HI-z = no motion.... LOW= Reverse HI=Forward... and you can PWM the pin....
• http://www.scooby.flysaturn.com/cktlib/motordrv/
• http://bobblick.com/bob/projects/hbridge Bob Blick has a good inexpensive H-Bridge using common RadioShack parts
  But, Wagner Lipnharski says:

  Need to be careful with this circuit, not to (accidentally) drive the control lines around 1Vdc... it can blow up the power transistors. For almost the same cost, you can go to the Alegro microchips as the UDN2998W, it is a *dual full bridge* internal protection for current and thermal, and much more, 50V @ 2A. Take a look at:

  http://allegromicro.com/sf/2998/index.htm

• http://www.bubblesoftonline.com/projects/mdrive.pdf

Archive:

• PICList post "Design Challenge - A better H Bridge MK2"

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