DRV3203-Q1_15 Datasheet, PDF (22/37 Pages) Texas Instruments – Three-Phase Brushless Motor Driver

DRV3203-Q1
SLVSC09A – MAY 2013 – REVISED JUNE 2013
www.ti.com
Phase Comparator
Description:
The three-channel comparator module monitors the external FETs by detecting the drain-source voltage across
the high-side and low-side FETs. PHTM is the threshold level of the comparators usable for sensorless
communication. Figure 14 shows an example of the threshold level.
UHS,
VHS,
WHS
PH1M
VB
PH2M
VCC
PH3M
PHTM
+
Clamp
-
PMV1
PMV2
PMV3
Clamp
Figure 14. Phase Comparator Block Diagram
Table 6. Phase Comparator Electrical Characteristics
PARAMETER
CONDITIONS
VB = 12 V, T_A = –40°C to +125℃ (unless otherwise specified)
PHASE COMPARTOR
Viofs
Input offset voltage
Vinm1
Input voltage range, PHTM
VB = 6 V - 28.5 V
Vinm2
Input voltage range, PHTM
VB = 5.3 V
Vinp
Input voltage range, PHxM
Vhys
Threshold hysteresis voltage
SPI register SPARE. SEL_COMP_HYS
V_OH
V_OL
t_{res_tr} ⁽¹⁾
t_{res_tf} ⁽¹⁾
Output high voltage
Output low voltage
Response time, rising
Response time, falling
Isink = 2.5 mA
Isource = 2.5 mA
C_L = 100 pF
C_L = 100 pF
MIN
-15
1.3
1.3
-1
-
12.5
25
50
0.9×VCC
-
-
-
(1) Specified by design
TYP
MAX UNITS
-
15 mV
-
4.5 V
-
4.2 V
-
VB V
0
-
25
50 mV
50
100
100
200
-
-V
- 0.1×VCC V
0.7
1.5 µs
0.7
1.5 µs
22
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