tb62217afg TOSHIBA Semiconductor CORPORATION, tb62217afg Datasheet - Page 44

• Manufacturer Part Number: tb62217afg
• Description: Pwm Drive Stepping Motor Driver / Brush Dc Motor Driver Selectable, Dc-dc Converter And Reset Function Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

DC-DC Converter AC Electrical Characteristics
Output transistor switching
characteristic (large)
Output transistor switching
characteristic (small)
Output transistor feed-through
prevention time
DC-DC setting frequency
Protection circuit dead band
(MASK) time at startup
Initial startup delay time
Initial startup delay time 2
Startup soft mode period
LVCO detection dead band time
POR detection dead band time
STROBE
OSCD
DC/DC
output
Mask
signal
Characteristics
tr D(L)
tr D(S)
tf D(L)
tf D(S)
(OSC_D)
tStart_Mask
fchop_D
Symbol
tr_D(S)
tf_D(S)
tr_D(L)
tf_D(L)
tLVCO
_Mask
tStrart
tstart1
tstart2
tPOR
tOFF
90%
tsoft
10%
fchop_D
Circuit
Test
AC
AC
AC
AC
AC
AC
AC
AC
AC
AC
Pch GATE
Nch GATE
VM
VM
VM
The DC-DC converter is turned on
independently of others, using
serial data.
fosc_M
STROBE signal has been
accepted
At fosc_M
becomes 6 V or higher but before
the first DC-DC converter starts.
At fosc_M
first DC-DC converter has started
but before the second DC-DC
converter starts.
fosc_M
At fosc_M
becomes 6 V or lower but before
the ORT becomes low.
At fosc_M
becomes 6 V or lower but before
the internal logic starts.
44
40 V, DCDC Ach (Large)
40 V, DCDC B/Cch (small)
40 V
800 kHz and after the
800 kHz
Test Condition
(T
800 kHz and after VM
800 kHz and after the
800 kHz and after VM
800 kHz and after VM
H
L
Active
Non - Active
Active
Non - Active
j

0 to 120°C and VM
ODX
VM
DGND
Pch ¢ G)
Nch ¢ G)
Min












C OFF
Typ.
300
100
100
0.1
0.1
0.1
0.1
TB62217AFG
20
20
20
10
10
40 V)
Active
Non - Active
Active
Non - Active
2004-11-12
Max
200










Unit
kHz
ms
ms
ms
ms
ms
P s
ns
P s