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TPA3245DDV Scheda tecnica(PDF) 4 Page - Texas Instruments

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Il numero della parte TPA3245DDV
Spiegazioni elettronici  200W Mono PurePath Ultra-HD Analog-Input
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TPA3245
SLASEC7 – APRIL 2016
www.ti.com
Product Folder Links: TPA3245
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Pin Functions
NAME
NO.
I/O
DESCRIPTION
AVDD
14
P
Internal voltage regulator, analog section
BST_A
44
P
HS bootstrap supply (BST), external 0.033
μF capacitor to OUT_A required.
BST_B
43
P
HS bootstrap supply (BST), external 0.033
μF capacitor to OUT_B required.
BST_C
24
P
HS bootstrap supply (BST), external 0.033
μF capacitor to OUT_C required.
BST_D
23
P
HS bootstrap supply (BST), external 0.033
μF capacitor to OUT_D required.
CLIP_OTW
21
O
Clipping warning and Over-temperature warning; open drain; active low
C_START
15
O
Startup ramp, requires a charging capacitor to GND
DVDD
11
P
Internal voltage regulator, digital section
FAULT
19
O
Shutdown signal, open drain; active low
FREQ_ADJ
8
O
Oscillator freqency programming pin
GND
12, 13, 25, 26,
33, 34, 41, 42
P
Ground
GVDD_AB
1
P
Gate-drive voltage supply; AB-side, requires 0.1 µF capacitor to GND
GVDD_CD
22
P
Gate-drive voltage supply; CD-side, requires 0.1 µF capacitor to GND
INPUT_A
5
I
Input signal for half bridge A
INPUT_B
6
I
Input signal for half bridge B
INPUT_C
16
I
Input signal for half bridge C
INPUT_D
17
I
Input signal for half bridge D
M1
3
I
Mode selection 1 (LSB)
M2
4
I
Mode selection 2 (MSB)
OC_ADJ
7
I/O
Over-Current threshold programming pin
OSC_IOM
9
I/O
Oscillator synchronization interface
OSC_IOP
10
O
Oscillator synchronization interface
OUT_A
39, 40
O
Output, half bridge A
OUT_B
35
O
Output, half bridge B
OUT_C
32
O
Output, half bridge C
OUT_D
27, 28
O
Output, half bridge D
PVDD_AB
36, 37, 38
P
PVDD supply for half-bridge A and B
PVDD_CD
29, 30, 31
P
PVDD supply for half-bridge C and D
RESET
18
I
Device reset Input; active low
VDD
2
P
Power supply for internal voltage regulator requires a 10-µF capacitor with a 0.1-µF capacitor to GND for decoupling.
VBG
20
P
Internal voltage reference requires a 0.1-µF capacitor to GND for decoupling.
PowerPad™
P
Ground, connect to grounded heat sink
Table 1. Mode Selection Pins
MODE PINS
INPUT MODE
OUTPUT
CONFIGURATION
DESCRIPTION
M2
M1
0
0
2N + 1
2 × BTL
Stereo BTL output configuration
0
1
2N/1N + 1
1 x BTL + 2 x SE
2.1 BTL + SE mode
1
0
2N + 1
1 x PBTL
Parallelled BTL configuration. Connect INPUT_C and INPUT_D to GND.
1
1
1N +1
4 x SE
Single ended output configuration
7 Detailed Description
7.1 Overview
To facilitate system design, the TPA3245 needs only a 12-V supply in addition to the (typical) 36-V power-stage
supply. An internal voltage regulator provides suitable voltage levels for the digital and low-voltage analog
circuitry, AVDD and DVDD. Additionally, all circuitry requiring a floating voltage supply, that is, the high-side gate
drive, is accommodated by built-in bootstrap circuitry requiring only an external capacitor for each half-bridge.


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