DRV3202-Q1_15 Datasheet, PDF (6/39 Pages) Texas Instruments – 3-Phase Brushless Motor Driver

DRV3202-Q1
SLVSBJ4A – OCTOBER 2012 – REVISED DECEMBER 2012
SUPPLY VOLTAGE AND CURRENT
VB = 12 V, T_A = –40°C to 125°C (unless otherwise specified)
PARAMETER
CONDITIONS
SUPPLY INPUT
VB VB Supply voltage
I_VB
VB Operating current
VB = 5.3 ~18 V, CAN_TX = High, No PWM
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MIN TYP MAX UNITS
5.3
12
18
V
20
35
mA
WATCHDOG
Description
The watchdog monitors the PRN signal and V_CC supply level and generates a reset to the MCU through the RES
pin if the status of the PRN is not normal or the V_CC is lower than the specified threshold level. The watchdog
can be disabled if WDEN is set high.
Vbgr = 2.325 V
(+0.75 V / ± 0.25 V)
VDD Undervoltage
Detection
VCC
R1
R2
Band Gap _{VHS = 0.1 V}
Regulator _{(+0.75 V / ± 0.05 V)}
VLVD
Clock
Monitor
VCC Low
Voltage Detection
(NMI)
WDEN
Watch Dog Timer
WDEN
Open: Enable
High: Disable
Disable During
Power On Reset
Power On Reset
Reset Logic
VCC
R_RES
3k
RES
100 pF
Option
PRN
From CPU
VNMI: Lower Threshold Voltage
VHS: Hysteresis Voltage
Figure 2. Watchdog Block Diagram
6
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