www.ti.com

PWM

and

Level

Shifter

H-Bridge

Internal

Oscillator

Biases, Control,

and

References

Regulator

V

max

Control

Gate

Control

Anti-

Ringing

PGND

AGND

BGControl

PGND

AGND

V

OUT

CC

Vref

AGND

IN+

IN–

SDb

V

DD

SW

V

OUT

CC

V

FB

CC

V

IN

CC

VOUT+

VOUT–

PGND

SDd

Res.

Array

GAIN

TPA2013D1

SLOS520 – AUGUST 2007

Functional Block Diagram

Table 1. BOOST CONVERTER MODE CONDITION

CASE

OUTPUT CURRENT

MODE OF OPERATION

Low

Continuous (fixed frequency)

High

Continuous (fixed frequency)

Low

Discontinuous (variable frequency)

High

Discontinuous (variable frequency)

Table 2. DEVICE CONFIGURATION

Boost

Class D

SDb

SDd

Comments

Converter

Amplifier

low

low

OFF

OFF

Device is in shutdown mode Iq

≤ 1 μA

Boost converter is off. Class-D Audio Power Amplifier (APA) can be driven by an

low

high

OFF

ON

external pass transistor connected to the battery.

high

low

ON

OFF

Class-D APA is off. Boost Converter is on and can be used to drive an external device.

Boost converter and Class-D APA are on. Normal operation. Boost converter can be

high

high

ON

ON

used to drive an external device in parallel to the Class-D APA within the limits of the

boost converter output current.

Copyright © 2007, Texas Instruments Incorporated

Submit Documentation Feedback

3

Product Folder Link(s): TPA2013D1