TMC246_06 Datasheet, PDF (22/26 Pages) List of Unclassifed Manufacturers – High Current Microstep Stepper Motor Driver with sensorless stall detection, protection / diagnosis and SPI Interface

TMC246 / TMC246A DATA SHEET (V2.03 / Nov. 6th, 2006)
22
V_OSCH
(input ENN)
High input voltage threshold
(input OSC)
V_ENNH
tbd 2/3 VCC tbd
V
V_OSCL Low input voltage threshold
(input OSC)
tbd 1/3 VCC tbd
V
V_VTD VT threshold voltage
(referenced to VS)
-130
-155
-180 mV
V_TRIP SRA / SRB voltage at
DAC=”1111”
internal ref. or
315
350
385 mV
2V at INA / INB
V_SRS SRA / SRB overcurrent detection
threshold
570
615
660 mV
V_SROFFS SRA / SRB comparator offset
voltage
-10
0
10
mV
R_INAB INA / INB input resistance
Vin ≤ 3 V
175
264
300 kΩ
AC Characteristics
AC characteristics contain the spread of values guaranteed within the specified supply voltage and
temperature range unless otherwise specified. Typical characteristics represent the average value of
all parts.
Logic supply voltage: V_CC = 5.0V,
Bridge supply voltage: V_S = 14.0V,
Ambient temperature: T_A = 27°C
Symbol Parameter
Conditions
Min
Typ
Max Unit
f_OSC Oscillator frequency
using internal oscillator
C_OSC = 1nF
±1%
20
25
31
kHz
t_RS, t_FS Rise and fall time of outputs Oxx V_o 15% to 85%
25
ns
with R_SLP=0
I_OXX = 800mA
t_RS, t_FS Rise and fall time of outputs Oxx V_o 15% to 85%
125
ns
with R_SLP = 25KΩ
I_OXX = 800mA
t_RS, t_FS Rise and fall time of outputs Oxx V_o 15% to 85%
250
ns
with R_SLP = 50KΩ
I_OXX = 800mA
T_BL Effective Blank time
BL1, BL2 = V_CC 1.35
1.5
1.65
µs
T_ONMIN Minimum PWM on-time
BL1, BL2 =
GND
0.7
µs
Thermal Protection
Symbol Parameter
T_JOT
T_JOTHYS
T_JWT
T_JWTHYS
Thermal shutdown
T_JOT hysteresis
Prewarning temperature
T_JWT hysteresis
Conditions
Min
Typ
Max Unit
145
155
165
°C
15
°C
135
145
155
°C
15
°C
Copyright © 2005, TRINAMIC Motion Control GmbH & Co KG