tb62217afg TOSHIBA Semiconductor CORPORATION, tb62217afg Datasheet - Page 15

• 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

4.
Output Control Circuit, Current Feedback Circuit, and Current Setting Circuit for
Motor Driver
Th_out
feedback
Current
Current
setting
V
V
I
T
circuit
circuit
SD
V
CC
SD
SD
MR
M
: DC-DC output voltage monitor
: V
: Over current protection circuit
: Over-temperature protection circuit
M
Output circuit
power monitor
regulator
VM-V
CC
Output control
circuit
NT
set current
reached signal
Output stop
signal
Output control signal
Protection circuits
CC monitoring
POR circuit
TSD circuit
VSD circuit
ISD circuit
circuit
(VM)
Latched-data
clear signal
Step current setting data logic circuit
Mixed decay
Charge start
Phase
Reset signal
selector
timing
circuit
Logic
U1
U2
L1
L2
15
Output reset signal
Decay
mode
OSC counter (2)
OSC counter
Chopping reference
generator circuit
Mixed
decay
timing
circuit
TB62217AFG
2004-11-12
Output
driver
circuit