DRV8305_16 Datasheet, PDF (4/59 Pages) Texas Instruments – Three Phase Gate Driver

DRV8305
SLVSCX2B – AUGUST 2015 – REVISED FEBRUARY 2016
www.ti.com
PIN
NAME
NO.
SP3
20
SN2
21
SP2
22
SN1
23
SP1
24
GLC
25
SLC
26
SHC
27
GHC
28
GHB
29
SHB
30
SLB
31
GLB
32
GLA
33
SLA
34
SHA
35
GHA
36
VCP_LSD
37
VCPH
38
CP2H
39
CP2L
40
PVDD
41
CP1L
42
CP1H
43
VDRAIN
44
DVDD
46
WAKE
47
VREG
48
PowerPAD (GND)
Pin Functions (continued)
TYPE
DESCRIPTION
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 charge pump for high-side gate driver; connect 2.2-µF
capacitor to PVDD
P
Charge pump flying capacitor
P
Flying capacitor for charge pump; connect 0.047-µF capacitor
between CP2H and CP2L
P Power supply
Device power supply; minimum 4.7-µF ceramic capacitor to
GND
P
Charge pump flying capacitor
P
Flying capacitor for charge pump; connect 0.047-µF capacitor
between CP1H and CP1L
P High-side drain
High-side MOSFET drain connection; common for all three half
bridges
P Digital regulator
3.3-V internal digital-supply regulator; bypass to GND with a 6.3-
V, 1-µF ceramic capacitor
High voltage tolerant input pin to wake-up device from SLEEP;
I Wake up from sleep control pin pin cannot be used to disable LDO; driver needs to be enabled
and disabled separately
P VREG/VREF
Dual purpose pin based on part number; also supplies internal
amplifier reference voltage and SDO pullup.
VREG: 3.3-V or 5-V, 50-mA LDO; connect 1-µF to GND
VREF: Reference voltage; LDO disabled
P Device ground
Must be connected to ground
4
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