CS4412A

30W Quad Half-Bridge Digital Amplifier Power Stage

Overview

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 outputs can be configured as four half-bridge channels, two half-bridge channels and one full-bridge channel for 2.1 stereo, two full-bridge channels for 2.0 stereo, or one parallel full-bridge channel for mono configuration.

The CS4412A integrates on-chip over-current, undervoltage, over-temperature protection and error reporting 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 the use of small device package and lower power supplies. The CS4412A is available in a 48-pin thermally enhanced QFN package and the CRD4412A customer reference design is also available.

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

Diagram