TDA8931T/N1,112 NXP Semiconductors, TDA8931T/N1,112 Datasheet

IC AMP/COMPARATOR 22W D 20SOIC

TDA8931T/N1,112

Manufacturer Part Number
TDA8931T/N1,112
Description
IC AMP/COMPARATOR 22W D 20SOIC
Manufacturer
NXP Semiconductors
Type
Class Dr
Datasheet

Specifications of TDA8931T/N1,112

Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
22W x 1 @ 4 Ohm
Voltage - Supply
12 V ~ 35 V, ±6 V ~ 17.5 V
Features
Depop, Short-Circuit and Thermal Protection
Mounting Type
Surface Mount
Package / Case
20-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
568-3609-5
935276045112
TDA8931T
1. General description
2. Features
3. Applications
4. Quick reference data
The TDA8931 is a switching power stage for high efficiency class-D audio power amplifier
systems.
It contains a Single-Ended (SE) power stage, drive logic, protection control logic, a full
differential input comparator and a HVP charger to charge the SE capacitor. With this
amplifier a compact 1
built. The TDA8931 has a high efficiency so that a heat sink is not required up to
20 W (RMS). The system operates on an asymmetrical and a symmetrical supply voltage.
Table 1:
Symbol Parameter
General
V
I
I
I
q
stb
sleep
P
TDA8931
Power comparator 1
Rev. 01 — 14 January 2004
High efficiency
Operating voltage asymmetrical from 12 V to 35 V
Operating voltage symmetrical from 6 V to 17.5 V
Thermally protected
No heat sink required
Charger for single-ended capacitor
No pop sound
Flat panel television sets
Flat panel monitors
Multimedia systems
Wireless speakers
Micro systems
operating supply
voltage
quiescent current
standby current
sleep current
Quick reference data
20 W closed loop self-oscillating digital amplifier system can be
Conditions
asymmetrical
symmetrical
Operating mode; V
Standby mode; V
Sleep mode; V
20 W
P
= 22 V
P
P
= 22 V
= 22 V
Preliminary data sheet
Min
12
-
-
-
6
Typ
22
20
10
100
11
Max
35
30
15
200
17.5 V
Unit
V
mA
mA
A

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TDA8931T/N1,112 Summary of contents

Page 1

TDA8931 Power comparator 1 Rev. 01 — 14 January 2004 1. General description The TDA8931 is a switching power stage for high efficiency class-D audio power amplifier systems. It contains a Single-Ended (SE) power stage, drive logic, protection control logic, ...

Page 2

Philips Semiconductors Table 1: Symbol Parameter SE channel Ordering information Table 2: Type number TDA8931T 9397 750 13847 Preliminary data sheet Quick reference data …continued Conditions efficiency ...

Page 3

Philips Semiconductors 6. Block diagram POWERUP Fig 1. Block diagram 9397 750 13847 Preliminary data sheet TDA8931 5 V DDA 4 INP comparator 3 INN 2 V SSA 6 7 ENABLE 9 CGND ODP CONTROL OTP OCP 12 OVP OVP ...

Page 4

Philips Semiconductors 7. Pinning information 7.1 Pinning Fig 2. Pin configuration 7.2 Pin description Table 3: Symbol V SSD V SSA INN INP V DDA POWERUP ENABLE DIAG CGND V SSD V SSD OVP HVP STABI V SSP OUT BOOT ...

Page 5

Philips Semiconductors 8. Functional description 8.1 General The TDA8931 is a switching power stage for high efficiency class-D audio power amplifier systems. It contains a Single-Ended (SE) power stage, drive logic, protection control logic, a full differential input comparator and ...

Page 6

Philips Semiconductors Pin HVPI will be on its final level of 0.5V into a plop-noise free start-up behavior. 8.5 Half supply voltage capacitor charger (pin HVP) When the device is in Standby mode, the SE capacitor C15 (see until it ...

Page 7

Philips Semiconductors Fig 3. Overvoltage protection setting The overvoltage protection level can be determined by the formula OVP Where: V P(OVP external resistor R2 = external resistor V = 1.27 V reference voltage. OVP Example: The ...

Page 8

Philips Semiconductors 9. Internal circuitry Table 6: Pin 1, 10, 11 9397 750 13847 Preliminary data sheet Internal circuitry Symbol Equivalent circuit V SSD V SSA INN, INP V DDA POWERUP Rev. 01 — ...

Page 9

Philips Semiconductors Table 6: Pin 9397 750 13847 Preliminary data sheet Internal circuitry …continued Symbol Equivalent circuit ENABLE DIAG CGND OVP HVP STABI Rev. 01 — 14 January 2004 TDA8931 Power comparator 1 7 ...

Page 10

Philips Semiconductors Table 6: Pin 9397 750 13847 Preliminary data sheet Internal circuitry …continued Symbol Equivalent circuit V SSP OUT V DDP BOOT HVPI Rev. 01 — 14 January 2004 TDA8931 Power comparator 1 V ...

Page 11

Philips Semiconductors 10. Limiting values Table 7: In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol ENABLE V OVP ORM P d(max stg T amb 11. Thermal characteristics Table ...

Page 12

Philips Semiconductors Table 9: Characteristics …continued 290 kHz; unless otherwise specified. P amb carrier Symbol Parameter Power-up input: pin POWERUP V LOW-level input voltage IL V HIGH-level input voltage IH ...

Page 13

Philips Semiconductors 13. Dynamic characteristics Table 10: Characteristics unless otherwise specified. P amb L Symbol Parameter Amplifier; SE channel P maximum output power o(max) THD total harmonic distortion ...

Page 14

Philips Semiconductors Fig 4. Timing diagram PWM output 9397 750 13847 Preliminary data sheet input V i(dif) V i(cm) t r(LH output V). ...

Page 15

R11 (1) C4 470 k 2 ( INN 47 k C11 R6 INP 2.2 k 220 nF IN POWERUP ...

Page 16

Philips Semiconductors Table 11: Item C10 C11 C12 C13 C14 C15 C16 C17 R10 R11 R12 R13 L1 U1 9397 750 13847 ...

Page 17

Philips Semiconductors 14.1 Output power estimation The output power, just before clipping, can be estimated using the following equation Where: P o(1 load impedance L R DSon R = series resistance output coil coil ...

Page 18

Philips Semiconductors 14.2 Output current limiting The output current is limited by the OCP with a threshold level of 3.3 A (minimum). During normal operation the output current should not exceed this threshold level, otherwise the output signal is distorted. ...

Page 19

Philips Semiconductors 14.4.1 Thermal layout including vias The bottom side of the double-sided PCB is used to place the SMD components including the TDA8931T and the majority of the signal tracks. The topside is used to place the leaded components. ...

Page 20

Philips Semiconductors To estimate the power dissipation, the following equation can be used Where power dissipation RMS output power ( efficiency of total application (0.91 for R The ...

Page 21

Philips Semiconductors 14.5 Measured performance figures of mono amplifier with TDA8931 Table 13 Symbol Parameter THD n(o) S/N B SVRR f c [1] Operates down to UVP ...

Page 22

Philips Semiconductors 14.6 Curves measured in typical application 2 10 THD N (%) kHz 10 100 kHz ...

Page 23

Philips Semiconductors ( ( THD = ( THD = 0 ( THD = ...

Page 24

Philips Semiconductors 100 n (%) ( ( Conditions kHz. ...

Page 25

Philips Semiconductors 16. Package outline SO20: plastic small outline package; 20 leads; body width 7 pin 1 index 1 e DIMENSIONS (inch dimensions are derived from the original mm dimensions) A UNIT ...

Page 26

Philips Semiconductors 17. Soldering 17.1 Introduction to soldering surface mount packages This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our Data Handbook IC26; Integrated Circuit Packages ...

Page 27

Philips Semiconductors – smaller than 1.27 mm, the footprint longitudinal axis must be parallel to the transport direction of the printed-circuit board. The footprint must incorporate solder thieves at the downstream end. • For packages with leads on four sides, ...

Page 28

Philips Semiconductors [4] These packages are not suitable for wave soldering. On versions with the heatsink on the bottom side, the solder cannot penetrate between the printed-circuit board and the heatsink. On versions with the heatsink on the top side, ...

Page 29

Philips Semiconductors 18. Revision history Table 15: Revision history Document ID Release date TDA8931_1 20050114 9397 750 13847 Preliminary data sheet Data sheet status Change notice Preliminary data sheet - Rev. 01 — 14 January 2004 TDA8931 Power comparator 1 ...

Page 30

Philips Semiconductors 19. Data sheet status [1] Level Data sheet status Product status I Objective data Development II Preliminary data Qualification III Product data Production [1] Please consult the most recently issued data sheet before initiating or completing a design. ...

Page 31

Philips Semiconductors 23. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . ...

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