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LV8127T Datasheet(PDF) 9 Page - ON Semiconductor

Part # LV8127T
Description  3-phase Bipolar PWM Drive Pre-Driver IC
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

LV8127T Datasheet(HTML) 9 Page - ON Semiconductor

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LV8127T
http://www.onsemi.com
9
Continued from preceding page.
Pin No.
Pin name
Function
Equivalent circuit
8
RFGND
Current sensing Kelvin reference pin.
This pin is connected to the GND side of the current
sense resistor.
This pin should be routed with RF to eliminate voltage
drops in the sensing circuit due to PCB trace resistance.
A dedicated trace should be used between this pin and
the high side of the sense resistor.
8
5k
V5
VCC
9
RF
Current Sensing Kelvin input pin.
This pin is connected to the external current sense
resistor and should be routed closely with RFGND to
eliminate voltage drops in the sensing circuit due to PCB
trace resistance. A dedicated trace should be used
between this pin and the high side of the sense resistor.
9
5k
V5
VCC
10
11
12
VL
UL
WL
. Low side FET drive pins for the three phases.
Duty cycle driven.
VCC
10 11 12
13
16
19
WFG
VFG
UFG
Motor phase voltage monitor pins.
Used by the IC to determine the state of each switch
node.
14 17 20
15 18 21
13 16 19
14
17
20
WOUT
VOUT
UOUT
High side FET drive pins for the three phases.
15
18
21
WH
VH
UH
Drive boost pins for the three phases.
Used as the high side gate voltage source.
Attached to a simple diode-capacitor boost circuit.
25
GND2
Ground pin
Ground pin
Continued on next page.


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