CS4412 Datasheet, PDF (1/22 Pages) Cirrus Logic – 30 W Quad Half-Bridge Digital Amplifier Power Stage

CS4412
30 W Quad Half-Bridge Digital Amplifier Power Stage
Features
 Configurable Outputs (10% THD+N)
– 2 x 15 W into 8 Ω, Full-Bridge
– 1 x 30 W into 4 Ω, Parallel Full-Bridge
– 4 x 7 W into 4 Ω, Half-Bridge
– 2 x 7 W into 4 Ω, Half-Bridge + 1 x 15 W
into 8 Ω, Full-Bridge
 Space-Efficient Thermally-Enhanced QFN
– No External Heat Sink Required
 > 100 dB Dynamic Range - System Level
 0.1% THD+N @ 1 W - System Level
 Built-In Protection with Error Reporting
– Over-current
– Thermal Warning and Overload
– Under-voltage
 +9 V to +18 V High Voltage Supply
 PWM Popguard^® for Quiet Startup
 High Efficiency (85%)
 Low R_DS(ON)
 Low Quiescent Current
 Low Power Standby Mode
Common Applications
 Integrated Digital Televisions
 Portable Docking Stations
 Mini/Micro Shelf Systems
 Powered Desktop Speakers
General Description
The CS4412 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 out-
puts 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 CS4412 integrates on-chip over-current, under-
voltage, over-temperature protection and error report-
ing as well as a thermal warning indicator. The low
R_DS(ON) outputs can source up to 2.4 A peak current,
delivering 85% efficiency. This efficiency provides for a
small device package and lower power supplies.
The CS4412 is available in a 48-pin QFN package in
Commercial grade (-40 to +70° C). The CRD4412 cus-
tomer reference design is also available. Please refer to
“Ordering Information” on page 22 for complete order-
ing information.
In 1
In 2
In 3
In 4
Reset
Hardware
Configuration
Current &
Thermal Data
2.5 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
9 V to 18 V
VP
Amplifier
Out 1
Amplifier
Out 2
Amplifier
Out 3
Amplifier
Out 4
PGND
Advance Product Information
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright © Cirrus Logic, Inc. 2006
(All Rights Reserved)
SEPTEMBER '06
DS749A1