tb62202afg TOSHIBA Semiconductor CORPORATION, tb62202afg Datasheet - Page 50

• Manufacturer Part Number: tb62202afg
• Description: Dual-stepping Motor Driver Ic For Oa Equipment Using Pwm Chopper Type
• Manufacturer: TOSHIBA Semiconductor CORPORATION

FAST DECAY
MODE
(0% MIXED
DECAY MODE)
In MIXED DECAY MODE, when the output current > the set current value
FAST DECAY MODE Waveform
Set current
value
12.5%
MIXED
DECAY
MODE
Set
current
value
I
out
I
out
STROBE signal input
STROBE signal input
Because the set current value > the output current, CHARGE
MODE → NF → FAST DECAY MODE in the next cycle, too
NF
f
chop
f
chop
NF
RNF
Set current value
RNF
cycle after STROBE signal input
CHARGE MODE for one f
MDT (MIXED DECAY TIMING) point
f
chop
Response delay time
Because the set current value > the output current,
FAST DECAY MODE in the next cycle, too
Set current value
50
RNF
chop
RNF
f
chop
NF is the point at which the output
current reaches the set current value.
output current, no CHARGE MODE in
Because the set current value > the
the next cycle.
NF
RNF
f
chop
NF
TB62202AFG
2005-04-04
RNF