Skip to main content

Posts

Showing posts with the label TDA7850

4 x 50 W MOSFET quad bridge power amplifier

Features:

High output power capability:
– 4 x 50 W/4  max.
– 4 x 30 W/4  @ 14.4 V, 1 kHz, 10 %
– 4 x 80 W/2  max.
– 4 x 55 W/2  @ 14.4V, 1 kHz, 10 %

MOSFET output power stageExcellent 2  driving capabilityHi-Fi class distortionLow output noiseST-BY functionMute functionAutomute at min. supply voltage detectionLow external component count:
– Internally fixed gain (26 dB)
– No external compensation
– No bootstrap capacitors
■ On board 0.35 A high side driver
Protections:

Output short circuit to gnd, to Vs, across the loadVery inductive loadsOverrating chip temperature with soft thermal limiterOutput DC offset detectionLoad dump voltageFortuitous open gndReversed batteryCircuit Diagram:

4 x 50 W MOSFET quad bridge power amplifier

Features

High output power capability:4 x 50 W/4  max.4 x 30 W/4  @ 14.4 V, 1 kHz, 10 %4 x 80 W/2  max.4 x 55 W/2  @ 14.4V, 1 kHz, 10 %MOSFET output power stageExcellent 2  driving capabilityHi-Fi class distortionLow output noiseST-BY functionMute functionAutomute at min. supply voltage detectionLow external component count:Internally fixed gain (26 dB)No external compensationNo bootstrap capacitorsOn board 0.35 A high side driverOutput short circuit to gnd, to Vs, across the loadVery inductive loadsOverrating chip temperature with soft thermal limiterOutput DC offset detectionLoad dump voltageFortuitous open gndReversed batteryCircuit Diagram