Texas Instruments MCT8316ZTEVM, User Manual

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Table 4-3. User-Adjustable Resistor Divider Settings for MCT8316ZT Variant (Defaults in Bold)
Setting Name Description Resistors
(AVDD and
AGND) Configuration Setting
VSEL_BK V
BK
Buck regulator average
voltage
(L
BK
= 47 or 22 μH,
C
BK
= 22 μF)
R21 and R28 R28 = 0 Ω 3.3 V
R21 = R28 = DNP 5.0 V
R21 = 47 kΩ 4.0 V
R21 = 0 Ω 5.7 V
MODE PWM Control Mode Selects the
Hall configuration,
modulation,
Asynchronous
Rectification (ASR),
and Automatic
Asynchronous
Rectification (AAR)
settings R22 and R29 R29 = 0 Ω Analog Hall Input, Asynchronous
modulation, ASR and AAR
Disabled
R29 = 22 kΩ Digital Hall Input, Asynchronous
modulation, ASR and AAR
Disabled
R29 = 100 kΩ Analog Hall Input, Synchronous
modulation, ASR and AAR
Disabled
R22 = R29 = DNP Digital Hall Input, Synchronous
modulation, ASR and AAR
Disabled
R22 = 100 kΩ Analog Hall Input, Synchronous
modulation, ASR and AAR
Enabled
R22 = 22 kΩ Digital Hall Input, Synchronous
modulation, ASR and AAR
Enabled
R22 = 0 Ω Digital Hall Input, Asynchronous
modulation, ASR and AAR
Enabled
SLEW Slew Rate Phase pin slew rate
switching low to high
(10-90%) and high to
low (90-10%) R19 and R26 R26 = 0 Ω 25 V/μs
R19 = R26 = DNP 50 V/μs
R19 = 47 kΩ 125 V/μs
R19 = 0 Ω 200 V/μs
ADV Advance Advances the lead
angle by a selectable
value (in electrical
degrees) R20 and R27 R27 = 0 Ω 0°
R27 = 22 kΩ 4°
R27 = 100 kΩ 11°
R20 = R27 = DNP 15°
R20 = 100 kΩ 20°
R20 = 22 kΩ 25°
R20 = 0 Ω 30°
4.7 MCT8316Z0R Compatibility
The MCT8316ZTEVM is also compatible with the MCT8316Z0R (SPI variant) as the featured motor driver IC
to spin a three-phase Brushless-DC motor. The MCT8316Z0R replaces the MODE, ADVANCE, SLEW, and
VSEL_BK pins with four SPI pins (SDI, SDO, SCLK, nSCS) to configure control registers and read status
registers. When using the MCT8316Z0R:
• SPI enable resistors in the “Depop. if H/W” silk screen box are to be populated (R13-R16)
• "Pop. If H/W" resistor (R17) is to be depopulated
• Resistor dividers in the “Hardware Variant Resistors” silk screen box are to be depopulated (R19-R22,
R26-R29).
Table 4-4 and Figure 4-7 show the status of populated and DNP resistors for the two compatible MCT8316Zx
variants.
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SNLU291B – MARCH 2021 – REVISED AUGUST 2022
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