DESCRIPTION

The STA530 is a BASH® power amplifier where BASH® means “High Efficiency”.

In fact its permits to build a BASH® architecture amplifier adding only few external components and a variable Buck regulator tracking the audio signal. Notice that normally only one Buck regulator is used to supply a multichannel amplifiers system , therefore most of the functions implemented in the circuit have a summing output pin.

The circuit contains all the blocks to build a configurable four channel amplifier.

■ MONOCHIP BRIDGE QUAD CONFIGURABLE AMPLIFIER OPTIMIZED FOR BASH® ARCHITECTURE

■ 4 X 50W OUTPUT POWER @ RL = 8 Ω, THD = 10 or (2 x 50W @ 8 Ω + 1 x 100W @ 4Ω) or (2 x 100W @ 4 Ω)

■ PRECISION RECTIFIERS TO DRIVE THE BUCK REGULATOR

■ ON-OFF SEQUENCE/ TIMER WITH MUTE AND STANDBY

■ PROPORTIONAL OVER POWER OUTPUT CURRENT TO LIMIT THE BUCK REGULATOR

■ ABSOLUTE POWER BRIDGE OUTPUT TRANSISTOR POWER PROTECTION

■ ABSOLUTE OUTPUT CURRENT LIMIT

■ INTEGRATED THERMAL PROTECTION

■ POWER SUPPLY OVER VOLTAGE PROTECTION

■ FLEXIWATT POWER PACKAGE WITH 27 PIN

■ BASH® LICENCE REQUIRED