T E C H N I C A L I N F O R M A T I O N
Pin Description
Pin
Function
Description
1
VN10
“Floating” supply input for the FET drive circuitry. This voltage must be stable
and referenced to VNN.
2,48
3,47
4,46
5,45
6, 7
8, 9
10, 40
LO2, LO1
Low side gate drive output (Channel 2 & 1)
LO2COM, LO1COM
HO2COM, HO1COM
HO2, HO1
Kelvin connection to source of low-side transistor (Channel 2 & 1)
Kelvin connection to source of high-side transistor (Channel 2 & 1)
High side gate drive output (Channel 2 & 1)
OCS2LN, OCS2LP
OCS2HP, OCS2HN
VBOOT2, VBOOT1
Over Current Sense inputs, Channel 2 low-side
Over Current Sense inputs, Channel 2 high-side
Bootstrapped voltage to supply drive to gate of high-side FET
(Channel 2 & 1)
12, 31
13, 16
14, 18
15
OCR2
Over-current threshold adjustment (Channel 2)
Switching feedback (Channels 1 & 2)
FBKOUT1, FBKOUT2
FBKGND1, FBKGND2
HMUTE
Ground Kelvin feedback (Channels 1 & 2)
Logic Output. A logic high indicates both amplifiers are muted, due to the
mute pin state, or a “fault” such as an overcurrent, undervoltage, or
overvoltage condition.
17
19
DCOMP
Internal mode selection. This pin must be grounded for proper device
operation.
BIASCAP
Bandgap reference times two (typically 2.5VDC). Used to set the common
mode voltage for the input op amps. This pin is not capable of driving external
circuitry.
20, 25
21, 26
22, 23
24
INV2, INV1
OAOUT2, OAOUT1
BBM0, BBM1
MUTE
Inverting inputs of Input Stage op amps. (Channels 2 & 1)
Outputs of Input Stage op amps. (Channels 2 & 1)
Break-before-make timing control to prevent shoot-through in the output FETs.
Logic input. A logic high puts the amplifier in mute mode. Ground pin if not
used. Please refer to the section, Mute Control, in the Application Information.
27, 35
28,34
29
V5
5V power supply input.
Analog ground.
AGND
VPPSENSE
Positive supply voltage sense input. This pin is used for both over and
under voltage sensing for the VPP supply.
30
VNNSENSE
Negative supply voltage sense input. This pin is used for both over and under
voltage sensing for the VNN supply.
32
REF
OCR1
VNN
Used to set internal bias currents. The pin voltage is typically 1.1V.
33, 37
39
Over-current threshold adjustment (Channel 1)
Negative supply voltage.
Over Current Sense inputs, Channel 1 low-side
Over Current Sense inputs, Channel 1 high-side
41, 42
43, 44
OCS1LN, OCS1LP
OCS1HP, OCS1HN
NC
11, 36,
Not connected (bonded) internally. To minimize coupling between pins, tie
38
these pins to AGND (pin34).
6
TA3020, Rev 2.1, 01.01
TRIPATH [ TRIPATH TECHNOLOGY INC. ]
