Datasheet

MTS62C19A
DS22260C-page 12  2010-2013 Microchip Technology Inc.
4.2 Stepping Examples
The MTS62C19A control modes are full-step, half-
step, modified half-step and microstepping control of
the motor, as shown in Figure 4-2.
FIGURE 4-2: Examples of Stepping Modes Achievable with Typical Application Circuit.
4.3 PCB Design Guidelines
Unused inputs should be connected to fixed voltage
levels in order to get the highest noise immunity. Typi-
cal PCB layout guidelines for power applications
should be followed. These include separate power
ground planes, supply decoupling capacitors close to
the IC, short connections and use of maximized copper
areas to improve thermal dissipation.
Motor Current
in Phase 1
Motor Current
in Phase 2
I01
I11
PHASE1
I02
I12
PHASE2
Full-Step
12
34
Half-Step
123
45678
Modified Half-Step
123
45678
+500 mA
-500 mA
+500 mA
-500 mA
+333 mA
-333 mA
+167 mA
-167 mA
0
0
5V
Micro-Stepping (1/8th)
V
REF1
V REF2
5V 5V
1... ...32
0V
0V
5V
5V