CS4412A
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
+8 V to +18 V High Voltage Supply
PWM Popguard
®
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
General Description
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 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 CS4412A 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 2.5 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 to +70° C). The CRD4412A cus-
tomer reference design is also available. Please refer to
for complete order-
ing information.
8 V to 18 V
VP
2.5 V to 5 V
In 1
In 2
In 3
In 4
Reset
Hardware
Configuration
Current &
Thermal Data
Mode
Configuration
Non-Overlap
Time Insertion
Non-Overlap
Time Insertion
Gate
Drive
Gate
Drive
Amplifier
Out 1
Amplifier
Out 2
Control Logic
Non-Overlap
Time Insertion
Gate
Drive
Amplifier
Out 3
Amplifier
Out 4
PGND
Protection &
Error Reporting
Non-Overlap
Time Insertion
Gate
Drive
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. 2007
(All Rights Reserved)
MAY '07
DS786A1
CIRRUS [ CIRRUS LOGIC ]
