DRV11873 Datasheet, PDF (3/16 Pages) Texas Instruments – 12-V, 3-PHASE, SENSORLESS BLDC MOTOR DRIVER

DRV11873
www.ti.com
PIN DESIGNATION
PWP PACKAGE
(TOP VIEW)
FS
PWMIN
FG
FR
RD
CS
VCP
COM
CPP
V5
CPN
VCC
W
U
GND
V
SLWS237 – NOVEMBER 2012
Table 1. PIN DESCRIPTIONS
TERMINAL
NAME
NO.
FS
1
FG
2
RD
3
VCP
4
CPP
5
CPN
6
W
7
GND
8
V
9
U
10
VCC
11
V5
12
COM
13
CS
14
FR
15
PWMIN
16
I/O ⁽¹⁾
DESCRIPTION
I Motor parameter adjustment pin. Pull low for lower speed motor and pull high for high speed motor.
O Frequency generator output. The output have period equal to 6 electrical states (FG).
O In the lock condition, RD output high through a pull up resistor to V_CC or 5 V.
O Charge pump output
O Charge pump conversion terminal
O Charge pump conversion terminal
O Phase W output
- Ground pin
O Phase V output
O Phase U output
I Input voltage for motor and chip supply voltage
O 5-V regulator output
I Motor common terminal input
Over current threshold set up pin. A resistor set up current limit is connected between this pin and ground.
The voltage across the resistor will compare with the voltage converted from the bottom MOSFETs current.
I If MOSFETs current is high, the part will get into the over-current protection mode by turning off top PWM
MOSFET and keeping the bottom MOSFET on.
I_limit(A) = 6600/R_CS(Ω), Equation valid range: 500 mA < I_limit < 2000 mA
I Set high for reverse rotation. Set low or floating for forward rotation.
I
PWM input pin. The PWM input signal will be converted to a fixed switching frequency on MOSFET driver.
The PWM input signal resolution is less than 1%.
(1) I = input, O = output, N/A = not available
Copyright © 2012, Texas Instruments Incorporated
Submit Documentation Feedback
3