Motordriver IC til industrielt udstyr
Toshiba lancerer DC brush motordriver IC til industrielt udstyr, der opererer med høje strømme og spændinger (in english).
Toshiba Electronics Europe (TEE) has launched a one-channel DC brush motor driver IC for industrial equipment. TB67H303HG is the industry’s first monolithic IC to realize 10A output current and 50V withstand voltage.High output current and voltage are required for motor driver circuits in industrial equipment, banking terminals such as banknote recognition systems, home appliances including sewing machines, and office automation equipment. These requirements make it difficult to design circuits with a single driver IC, as the high current generates heat.
Multiple discrete semiconductors are generally used in order to reduce heat generation in each component. Housed in an HZIP25 package that enables high power dissipation, TB67H303HG can sustain a 10A output current without overheating. This reduces the need for designers specifying the IC to use multiple discrete semiconductor devices, contributing the simplification and downsizing of applications.
TB67H303HG adopts the latest high voltage analogue process, reducing ON resistance to 0.2Ω or less - 80% that of its predecessor. The motor driver can be operated in two driving modes: standard direct PWM mode, or the newly adopted constant current PWM mode. Both driving modes support Forward, Reverse, Short brake, and Stop functions when used with a single brush motor.
The IC also incorporates abnormality detection functions such as thermal shutdown circuit, over-current detection, and undervoltage lockout (UVLO) circuit. These functions improve the safety of the high current motor drive.
