DRV3204E-Q1 Datasheet, PDF (27/39 Pages) Texas Instruments – Three-Phase Brushless Motor Driver

DRV3204E-Q1
www.ti.com
SLVSCB5A – OCTOBER 2013 – REVISED JANUARY 2013
VB Monitor
Description:
The VB monitoring system has two comparators for undervoltage and overvoltage, and has pre-driver stop
controlling system respectively. Overvoltage provides pre-driver stop condition selectable (SPI control). On the
other hand, under voltage must stop pre-driver operation under detection (non-selectable). System should return
to normal operation automatically after undetected level.
VB
+
VB_OV
VB_UV
VREF
-
Figure 20. VB Monitor Block Diagram
Table 9. Electrical Characteristics
PARAMETER
VB = 12 V, T_A = –40°C to 150℃ (unless otherwise specified)
VB MONITOR
VBOV
VB overvoltage detection threshold level
VBOVhys⁽¹⁾ VB overvoltage detection hysteresis
CONDITIONS
VBUV
VB Undervoltage detection threshold level
SPI register FLTCFG. VBUVTH
VBUVhys⁽¹⁾ VB Undervoltage detection hysteresis
(1) Specified by design.
SPI register FLTCFG. VBUVTH
MIN TYP MAX UNITS
26.5 27.5
0.2 0.5
3.65
4
4.15 4.5
4.65
5
5.15 5.5
0.1 0.25
0.2 0.4
0.2 0.5
0.3 0.65
28.5 V
1.2 V
4.35
4.85
5.35
V
5.85
0.5
0.8
1.0
V
1.3
Thermal Shut Down
Description:
The device has temperature sensors that produce pre-driver stop condition if the chip temperature exceeds
175°C (typical).
IPTAT
TSD
Figure 21. Thermal Shutdown Block Diagram
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: DRV3204E-Q1
Submit Documentation Feedback
27