STABP01

STABP01 DIGITAL PROCESSOR s BASH® LICENCE REQUIRED DESCRIPTION The STABP01 processor is used to control the BASH® Digital Converter. When used in conjunction with BASH® amplifiers a fully integrated high efficiency power amplifier is realized. By analyzing the audio input, the Processor determines the appropriate on/off events and generates a digital pulse for the Digital Converter. The converter turns this pulse into a power signal that feeds the power amplifier. The feedback system allows the processor to constantly adapt to the audio signal and regenerate the digital pulse thereby maintaining a constant voltage across the output devices. BLOCK DIAGRAM UVLO: 7V = on 5V = off + + SOFT SWITCH 250Hz 1V CLOCK Ct COMP V+ VFB + 2R COMP/3 R + CURRENT SENSE COMPARATOR CURRENT_SENSE DISCHARGE (RESET) TRANSISTOR 1V + CLK Q D Q + S Q R Q PWM LATCH GROUND2 1V OUTPUT ERROR AMP 1V + + GROUND1 SOFT SW RESET 1V DEAD TIME POWER_VS2 S R OUTPUT Q Q 1V POWER SUPPLY1 10V DIP20 SO20 ORDERING NUMBERS: STABP01 (DIP20) STABP01D (SO20) Q VREF 10V Rt 1V INTERNAL CIRCUIT ON R Q S 1V RESET FA IN BUFFER IN + BUFFER FAST ATTACK + CONTROL 17R ONE SHOT SIGNAL CLK 10V D Q Q 1V + OPEN DRAIN OUTPUT ONE SHOT DELAY 10V R BUFFER OUT + - RESET 1V REC_OUT 1V 2200pF 50K 2200pF ONE SHOT 1V 20K C51 DUTY ACCEL R162 10V D00AU1219 December 2002 1/7 Free Datasheet http://www.Datasheet4U.com STABP01 ABSOLUTE MAXIMUM RATINGS Symbol Vs Io Eo Vi Io Ptot Tstg TL Top Supply Voltage Output Current O...