DRV8305_15 Datasheet, PDF (4/53 Pages) Texas Instruments – DRV8305 Three Phase Gate Driver With Current Shunt Amplifiers and Voltage Regulator

DRV8305
SLVSCX2A – AUGUST 2015 – REVISED SEPTEMBER 2015
www.ti.com
NO.
14
45
PPAD
PIN
NAME
GND
15 AVDD
16 SO1
17 SO2
18 SO3
19 SN3
20 SP3
21 SN2
22 SP2
23 SN1
24 SP1
25 GLC
26 SLC
27 SHC
28 GHC
29 GHB
30 SHB
31 SLB
32 GLB
33 GLA
34 SLA
35 SHA
36 GHA
37 VCP_LSD
38 VCPH
39 CP2H
40 CP2L
Pin Functions (continued)
I/O
DESCRIPTION
P Device ground
Must be connected to ground
P Analog regulator
5.0 V analog internal 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
I Current amplifier positive input Positive input of current sense amplifier 3
I Current amplifier negative input Negative input of current sense amplifier 2
I Current amplifier positive input Positive input of current sense amplifier 2
I Current amplifier negative input Negative input of current sense amplifier 1
I Current amplifier positive input Positive input of current sense amplifier 1
O Low-side gate driver
Low-side gate driver output for half-bridge C
I Low-side source connection
Low-side source connection for half-bridge C
I High-side source connection High-side source connection for half-bridge C
O High-side gate driver
High-side gate driver output for half-bridge C
O High-side gate driver
High-side gate driver output for half-bridge B
I High-side source connection High-side source connection for half-bridge B
I Low-side source connection
Low-side source connection for half-bridge B
O Low-side gate driver
Low-side gate driver output for half-bridge B
O Low-side gate driver
Low-side gate driver output for half-bridge A
I Low-side source connection
Low-side source connection for half-bridge A
I High-side source connection High-side source connection for half-bridge A
O High-side gate driver
High-side gate driver output for half-bridge A
P
Low-side gate driver regulator
Internal voltage regulator for low-side gate driver; connect 1-µF
capacitor to GND
P
High-side gate driver regulator
Internal voltage regulator for high-side gate driver; connect 2.2-µF
capacitor to PVDD
P
P
Charge pump flying capacitor
Flying capacitor for charge pump; connect 0.047-µF capacitor
between CP2H and CP2L
External Components
COMPONENT
PIN 1
PIN 2
RECOMMENDED
C_PVDD
C_AVDD
C_DVDD
C_VCPH
C_{VCP_LSD}
C_CP1
C_CP2
C_VREG
R_VDRAIN
R_nFAULT
PVDD
AVDD
DVDD
VCPH
VCP_LSD
CP1H
CP2H
VREG
VDRAIN
nFAULT
GND
GND
GND
PVDD
GND
CP1L
CP2L
GND
PVDD
VCC ⁽¹⁾
4.7-µF ceramic capacitor rated for 50 V
1.0-µF ceramic capacitor rated for 6.3 V
1.0-µF ceramic capacitor rated for 6.3 V
2.2-µF ceramic capacitor rated for 16 V
1.0-µF ceramic capacitor rated for 16 V
0.047-µF ceramic capacitor rated for 16 V
0.047-µF ceramic capacitor rated for 16 V
1.0-µF ceramic capacitor rated for 6.3 V
100-Ω series resistor
1 to 10 kΩ pulled up the MCU power supply
(1) VCC is not a pin on the DRV8305, but a VCC supply voltage pullup is required for open-drain output nFAULT
4
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