TB62206FG Toshiba, TB62206FG Datasheet - Page 8

• Manufacturer Part Number: TB62206FG
• Manufacturer: Toshiba

Specifications of TB62206FG

• Function: Driver
• Vopmax (vm*): 35V (40V)
• Io (lpeak): 1.5A (1.8A)
• Excitation: 1/2 step
• I/f: phase input (2-bit/phase)
• Mixed Decay Mode: included
• Package: HSOP20
• Rohs Compatible†: yes

Current Waveform and Setting of MIXED DECAY MODE
MIXED DECAY MODE Waveform
DECAY MODE 1
Internal
CR CLK
signal
I
Set current
value
25%
MIXED
DECAY
MODE
OUT
CR pin
internal
CLK
waveform
37.5%
MIXED
DECAY
MODE
(ripple current) should be 37.5%.
To control the constant current, the rate of Mixed Decay Mode which determines current amplitude
NF
Charge mode → NF: set current value reached → Slow mode
→ Mixed decay timing → Fast mode → Charge mode
f
chop
MDT (MIXED DECAY TIMING) point: 37.5% fixed
NF
(current waveform)
Set current value
8
f
chop
RNF
MDT
NF
f
chop
Set current value
TB62206FG
2011-02-10