DRV8305_16 Datasheet, PDF (3/59 Pages) Texas Instruments – Three Phase Gate Driver

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5 Pin Configuration and Functions
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48-Pin HTQFP
Top View
DRV8305
SLVSCX2B – AUGUST 2015 – REVISED FEBRUARY 2016
EN_GATE
1
INHA
2
INLA
3
INHB
4
INLB
5
INHC
6
INLC
7
nFAULT
8
nSCS
9
SDI
10
SDO
11
SCLK
12
PowerPAD
(GND)
36
GHA
35
SHA
34
SLA
33
GLA
32
GLB
31
SLB
30
SHB
29
GHB
28
GHC
27
SHC
26
SLC
25
GLC
PIN
NAME
NO.
EN_GATE
1
INHA
2
INLA
3
INHB
4
INLB
5
INHC
6
INLC
7
nFAULT
8
nSCS
9
SDI
10
SDO
11
SCLK
12
PWRGD
13
14
GND
45
AVDD
15
SO1
16
SO2
17
SO3
18
SN3
19
Pin Functions
TYPE
DESCRIPTION
I Enable gate
I Bridge PWM input
I Bridge PWM input
I Bridge PWM input
I Bridge PWM input
I Bridge PWM input
I Bridge PWM input
OD Fault indicator
I SPI chip select
I SPI input
O SPI output
I SPI clock
OD Power good
Enables the gate driver and current shunt amplifiers; internal
pulldown
PWM input signal for bridge A high side
PWM input signal for bridge A low side
PWM input signal for bridge B high side
PWM input signal for bridge B low side
PWM input signal for bridge C high side
PWM input signal for bridge C low side
When low indicates a fault has occurred; open drain; external
pullup to MCU power supply needed (1 kΩ to 10 kΩ)
Select/enable for SPI; active low
SPI input signal
SPI output signal
SPI clock signal
VREG and MCU watchdog fault indication; open drain; external
pullup to MCU power supply needed (1 kΩ to 10 kΩ)
P Device ground
Must be connected to ground
P Analog regulator
5-V internal analog supply regulator; bypass to GND with a 6.3-
V, 1-µF ceramic capacitor
O Current amplifier output
Output of current sense amplifier 1
O Current amplifier output
Output of current sense amplifier 2
O Current amplifier output
Output of current sense amplifier 3
I Current amplifier negative input Negative input of current sense amplifier 3
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