TB62206FG Toshiba, TB62206FG Datasheet - Page 19

• 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

Operation of Charge Pump Circuit
•
•
Initial charging
(1)
(2)
(3)
Actual operation
(4)
(5)
When RESET is released, T
Di1.
T
When the voltage difference between V
reaches V
Ccp 1 charge is used at f
Charges up by (1) and (2) above.
r1
is turned OFF, T
Comparator
Controller
(1)
V
&
Initial charging
DD
DD
= 5 V
or higher, operation halts (steady state).
Output
H switch
(2)
Output
r2
R
is turned ON, and Ccp 1 is charged from Ccp 2 via Di2.
S
chop
r1
switching and the V
is turned ON and T
Steady state
(3)
M
t
19
i2
T
V
r1
R
and V
H
T
(4)
RS
Di3
r2
V
z
H
H
(Ccp A pin voltage = charge pump voltage)
Di1
r2
(5)
(1)
Di2
R
potential drops.
Output switching
1
turned OFF. Ccp 2 is charged from Ccp 2 via
V
i1 = charge pump output current
i2 = gate block power dissipation
H
= V
(2)
(4)
(2)
V
i1
M
M
7
Ccp C
+ V
Ccp A
Ccp B
V
M
Ccp 2
0.022 μ F
DD
= 24 V
(5)
= charge pump voltage
Ccp 1
0.22 μ F
TB62206FG
V
V
M
H
2011-02-10