TA3020 Ver la hoja de datos (PDF) - Tripath Technology Inc.

Número de pieza

componentes Descripción

Fabricante

TA3020

Stereo 300W (4Ω) Class-T Digital Audio Amplifier Driver using Digital Power Processing™ Technology

Tripath Technology Inc. 

TECHNICAL INFORMATION

Pin Description

Pin

1

2,48

3,47

4,46

5,45

6, 7

8, 9

10, 40

12, 31

13, 16

14, 18

15

17

19

20, 25

21, 26

22, 23

24

27, 35

28,34

29

30

32

33, 37

39

41, 42

43, 44

11, 36,

38

Function

VN10

LO2, LO1

LO2COM, LO1COM

HO2COM, HO1COM

HO2, HO1

OCS2LN, OCS2LP

OCS2HP, OCS2HN

VBOOT2, VBOOT1

OCR2

FBKOUT1, FBKOUT2

FBKGND1, FBKGND2

HMUTE

DCOMP

BIASCAP

INV2, INV1

OAOUT2, OAOUT1

BBM0, BBM1

MUTE

V5

AGND

VPPSENSE

VNNSENSE

REF

OCR1

VNN

OCS1LN, OCS1LP

OCS1HP, OCS1HN

NC

Description

“Floating” supply input for the FET drive circuitry. This voltage must be stable

and referenced to VNN.

Low side gate drive output (Channel 2 & 1)

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)

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)

Over-current threshold adjustment (Channel 2)

Switching feedback (Channels 1 & 2)

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.

Internal mode selection. This pin must be grounded for proper device

operation.

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.

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.

5V power supply input.

Analog ground.

Positive supply voltage sense input. This pin is used for both over and

under voltage sensing for the VPP supply.

Negative supply voltage sense input. This pin is used for both over and under

voltage sensing for the VNN supply.

Used to set internal bias currents. The pin voltage is typically 1.1V.

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

Not connected (bonded) internally. To minimize coupling between pins, tie

these pins to AGND (pin34).

6

TA3020, Rev 2.1, 01.01

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