CS4412A-CNZ

CS4412A-CNZ Datasheet


CS4412A

Part Datasheet
CS4412A-CNZ CS4412A-CNZ CS4412A-CNZ (pdf)
Related Parts Information
CS4412A-CNZR CS4412A-CNZR CS4412A-CNZR
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CS4412A
30 W Quad Half-Bridge Digital Amplifier Power Stage

Configurable Outputs 10% THD+N 2 x 15 W into 8 Full-Bridge 1 x 30 W into 4 Parallel Full-Bridge 4 x W into 4 Half-Bridge 2 x W into 4 Half-Bridge + 1 x 15 W into 8 Full-Bridge

Space-Efficient Thermally-Enhanced QFN No External Heat Sink Required
> 100 dB Dynamic Range - System Level < THD+N 1 W - System Level Built-In Protection with Error Reporting

Over-Current Thermal Warning and Overload Under-Voltage
+8 V to +18 V High Voltage Supply PWM Technology for Quiet Startup

No Bootstrap Required

Low Quiescent Current

Low Power Standby Mode

Common Applications

Integrated Digital Televisions Portable Media Player Docking Stations Mini/Micro Shelf Systems Powered Desktop Speakers

The CS4412A is a high-efficiency power stage for digital Class-D amplifiers designed to input PWM signals from a modulator such as the CS4525. The power stage outputs can be configured as four half-bridge channels, two half-bridge channels and one full-bridge channel, two full-bridge channels, or one parallel full-bridge channel.

The CS4412A integrates on-chip over-current, undervoltage, over-temperature protection, and error reporting as well as a thermal warning indicator. The low RDS ON outputs can source up to A peak current, delivering high efficiency which allows small device package and lower power supplies.
The CS4412A is available in a 48-pin QFN package in Commercial grade -10°C to +70°C . The CRD4412A customer reference design is also available. Please refer to “Ordering Information” on page 23 for complete ordering information.

In 1 In 2 In 3 In 4

Reset Hardware Configuration

Current & Thermal Data

V to 5 V

Mode Configuration

Control Logic

Protection & Error Reporting

Non-Overlap Time Insertion

Non-Overlap Time Insertion

Non-Overlap Time Insertion

Non-Overlap Time Insertion

Gate Drive

Gate Drive

Gate Drive

Gate Drive
8 V to 18 V

VP Amplifier Out 1

Amplifier Out 2

Amplifier Out 3

Amplifier Out 4

PGND

Advance Product Information

This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice.

Copyright Cirrus Logic, Inc. 2008 All Rights Reserved

JUN '08 DS786A2

CS4412A

TABLE OF CONTENTS

PIN DESCRIPTION 3 CHARACTERISTICS AND SPECIFICATIONS 5

RECOMMENDED OPERATING CONDITIONS 5 ABSOLUTE MAXIMUM RATINGS 5 PWM POWER OUTPUT CHARACTERISTICS 6 DC ELECTRICAL CHARACTERISTICS 7 DIGITAL INTERFACE SPECIFICATIONS 7 DIGITAL I/O PIN CHARACTERISTICS 8 TYPICAL CONNECTION DIAGRAMS 9 APPLICATIONS 13 Overview 13 Reset and Power-Up 13
LIST OF FIGURES

Figure 1.Stereo Full-Bridge Typical Connection Diagram 9 Figure Channel Typical Connection Diagram 10 Figure Channel Half-Bridge Typical Connection Diagram 11 Figure 4.Parallel Full-Bridge Typical Connection Diagram 12 Figure 5.Output Filter - Half-Bridge 16 Figure 6.Output Filter - Full-Bridge 18

LIST OF TABLES

Table I/O Power Rails 8 Table Typical Ramp Times for Typical VP Voltages 13 Table Output Mode Configuration 15 Table Low-Pass Filter Components - 16 Table DC-Blocking Capacitors Values - 17 Table Low-Pass Filter Components - Full-Bridge 18 Table Over-Current Error Conditions 19 Table Thermal and Under-Voltage Error 19 Table Power Supply Configuration and 20

DS786A2

PIN DESCRIPTION

CS4412A

GND RST34 RAMP ERROC34 ERROC12 ERRUVTE TWR PGND
48 47 46 45 44 43 42 41 40 39 38 37

CNFG0 1 CNFG1 2 CNFG2 3

IN1 4 IN2 5 IN3 6 IN4 7 RST12 8 LVD 9 GND 10 VD_REG 11 VD 12

Thermal Pad

Top-Down Through Package View 48-Pin QFN Package
36 VP 35 OUT1 34 PGND 33 PGND 32 OUT2 31 VP 30 VP 29 OUT3 28 PGND 27 PGND 26 OUT4 25 VP
13 14 15 16 17 18 19 20 21 22 23 24

GND OCREF PGND RAMP_CAP

Pin Name CNFG0 CNFG1 CNFG2 IN1 IN2 IN3 IN4 RST12 RST34

VD_REG VD

OCREF

Pin # 1 2 3 4 5 6 7 8 46
11 12

Pin Description Out Configuration Select Input - Used to set the PWM output configuration mode. See “Output Mode Configuration” on page

PWM Input - Logic-level switching inputs from a PWM modulator.

Reset Input - Reset inputs for channels 1/2 and 3/4, respectively. Active low. VD Voltage Level Indicator Input - Identifies the voltage level attached to VD. When applying V to VD, LVD must be connected to VD. When applying V or V to VD, LVD must be GND. Core Digital Power Output - Internally generated low voltage power supply for digital logic. Digital Power Input - Positive power supply for the internal regulators and digital I/O. Over-current Reference Input - Sets over-current trigger level. Connect pin through a resistor to GND. See “Device Protection and Error Reporting” on page This pin should not be left floating.

DS786A2

Pin Name RAMP_CAP

PGND

OUT4 OUT3 OUT2 OUT1 TWR ERRUVTE ERROC12 ERROC34 RAMP Thermal Pad

CS4412A

Pin #
10,13 14,15 16,17 18,19 20,47
48 25,30 31,36 22,23 27,28 33,34 37,38 39,40
26 29 32 35
43 44

Pin Description Output Ramp Capacitor Input - Used by the PWM PopGuard Transient Control to suppress the initial pop in half-bridge-configured outputs.

Ground Input - Ground for the internal logic and I/O. These pins should be connected to the common system ground.

High Voltage Output Power Input - High voltage power supply for the individual output power half-bridge devices.

Power Ground Input - Ground for the individual output power half-bridge devices. These pins should be connected to the common system ground.

PWM Output - Amplified PWM power outputs.

Thermal Warning Output - Thermal warning output. Open drain, active low. See “Device Protection and Error Reporting” on page Thermal and Under-voltage Error Output - Error flag for thermal shutdown and undervoltage. Open drain, active low. See “Device Protection and Error Reporting” on page 19 Over-current Error Output - Over-current error flag for the associated outputs. Open drain, active low. See “Device Protection and Error Reporting” on page Ramp-up/down Select Input - Set high to enable ramping. When set low, ramping is disabled. See “PWM Popguard Transient Control” on page Thermal Pad - Thermal relief pad for optimized heat dissipation. See “QFN Thermal Pad” on page 20 for more information.

DS786A2
ORDERING INFORMATION

Product CS4412A CRD4412A CRD4525-Q1

Package Pb-Free Grade Temp Range Container Order#
30 W Quad Half-Bridge

Digital Amplifier
48-QFN

Power Stage

Rail

CS4412A-CNZ

Commercial -10°C to +70°C

Tape and Reel

CS4412A-CNZR
4 Layer / 3oz. Copper

Reference Design

CRD4412A

Daughter Card
4 Layer / 1oz. Copper

Reference Design

CRD4525-Q1

Main Board
10.REVISION HISTORY

Release A1

Changes

Initial Release
The following items were update “PWM Power Output Characteristics” on page 6 Section “Half-Bridge Output Filter” on page 16 Section “Full-Bridge Output Filter Stereo or Parallel ” on page 18 Section “Thermal Flag” on page 23 Section “Ordering Information” on page 23

DS786A2

CS4412A

Contacting Cirrus Logic Support

For all product questions and inquiries, contact a Cirrus Logic Sales Representative.

To find one nearest you, go to

IMPORTANT NOTICE
“Advance” product information describes products that are in development and subject to development changes. Cirrus Logic, Inc. and its subsidiaries “Cirrus” believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of any kind express or implied . Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.

CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE “CRITICAL APPLICATIONS” . CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES.

Cirrus Logic, Cirrus, the Cirrus Logic logo designs, and Popguard are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners.

DS786A2
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Datasheet ID: CS4412A-CNZ 523185