AMIS-30421 Datasheet, PDF (8/41 Pages) ON Semiconductor – Micro-Stepping Stepper Motor Bridge Controller

AMIS−30421
Table 4. DC PARAMETERS
The DC parameters are given for V_BB and temperature in their operating ranges unless otherwise specified.
Convention: currents flowing in the circuit are defined as positive.
Symbol Pin(s)
Parameter
Remark/Test Conditions
Min
Typ
PACKAGE THERMAL RESISTANCE VALUE
Thermal Resistance
Simulated Conform
JEDEC JESD−51, (2S2P)
30
Rth_ja
Junction−to−Ambient
Simulated Conform
JEDEC JESD−51, (1S0P)
60
Thermal Resistance
Rth_jp
Junction−to−Exposed Pad
0.95
Max Unit
K/W
K/W
K/W
Table 5. AC PARAMETER The AC parameters are given for V_BB and temperature in their operating ranges unless otherwise
specified.
Symbol Pin(s)
Parameter
Remark/Test Conditions
Min
Typ
Max
INTERNAL OSCILLATOR
f_osc
POWER−UP
Frequency of internal oscillator
6.4
8
9.6
t_PU
t_POR
t_RF
t_DSPI
PREDRIVER
POR
Power−up time
Reset duration
Reset filter time
SPI Delay
C_VDD = 200 nF, See Figure 4
See Figure 4
80
See Figure 4
1
See Figure 4
60
100
120
15
500
f_PWM
PWM frequency
Frequency depends only on
internal oscillator
20
25
30
t₁
Bridge MOSFET switch on time t₁
Selectable through SPI.
See Figure 11.
375
1250
t₂
Bridge MOSFET switch on time t₂
Selectable through SPI.
See Figure 11.
1250
4750
t_off
Bridge MOSFET switch off time
Selectable through SPI.
See Figure 11.
1250
4750
t_{switch_tol}
Bridge MOSFET switch on/off toler-
ance
−20
+20
t_open
topen_acc
Open circuit time out
Open circuit time out accuracy
Selectable through SPI
0.32
−20
163.84
+20
t_nocross
t_{nocross_acc}
Non overlap time
Non overlap accuracy
Selectable through SPI
0
1
−20
+20
Unit
MHz
ms
ms
ms
ms
kHz
ns
ns
ns
%
ms
%
ms
%
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