Bipolar stepper driving ?

Use a H-bridge to allow either polarity across each winding. Call winding 1 "vertical" A to B; winding 2 "horizontal" C to D. Try A-B, A-B & C-D, C-D, C-D & B-A, B-A, etc; opposite direction for opposite motion.

The TB6598FN is a dual H-BRIDGE IC.

The problem is they show one "EN" and one "IN" line going to each bridge or actually they show it going to a box labelled bridge.

I know I have to pulse each arm in sequence but what is what from the diagram?

They don't say which line controls which N-channel and P-Channel combo. The truth table is even more confusing they say if EN1&2 are high and IN1&2 are low the motor will move in the forward direction. I dont want to pulse one bridge for forward movement and then pulse the other one for reverse.

I'm trying to figure out the sequence I would have to pulse the four control lines for forward rotation.

it isn't best datasheet I've seen, but it is clear what the pins does.

EN1/2 pins enable or disable the h-bridge, when low all transistors are off.

IN1/2 pins control the h-bridge when the EN1/2 is high.

just so set EN1 and EN2 high and toggle IN1 and IN2

IN1: 110011001100 IN2: 011001100110

-Lasse

Thank you

I wasnt sure.