Which H-Bridge?

[Carson Baker]

Hi,

Could someone suggest a commercial motor driver that I could buy or some
kind of plans to build my own (H-Bridge or whatever)? I need something that
can handle 2 amps of current at 15V, be able to do braking (regenerative
would be nice). One output with forward and reversible direction is enough.

Thanks,

Carson Baker

 

[Roger Hamlett]

Hi,

Could someone suggest a commercial motor driver that I could buy or some
kind of plans to build my own (H-Bridge or whatever)? I need something that
can handle 2 amps of current at 15V, be able to do braking (regenerative
would be nice). One output with forward and reversible direction is enough.

Thanks,

What you don't say, is whether you are just wanting 'full on' drives, or
want a PWM speed control as well?.
For a simple bridge, you'd have to go a long way to beat the L298. Though it
is a dual unit, it is cheaper than many single drivers. It gives forward,
reverse, free wheel, and brake using two control signals, and handles 4A, at
46v max, with temperature protection 'built in'. It is important to remember
that even if the motor only draws a particular current, a good margin is
generally needed to handle the acceleration/deceleration currents, so the
L298, may not be that much of an 'overkill'.

Best Wishes

 

[CBarn24050]

L298 is perfect, but its little brother L293 would do as well if you combine
the 2 channels so they share the load current.

 

[art hansen]

Hi,

Could someone suggest a commercial motor driver that I could buy or some
kind of plans to build my own (H-Bridge or whatever)? I need something that
can handle 2 amps of current at 15V, be able to do braking (regenerative
would be nice). One output with forward and reversible direction is enough.

Thanks,

Carson Baker

for all of the L298 features, better power handling, plus internal pwm
current control to handle inrush check out
http://www.allegromicro.com/datafile/3959.pdf