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  • What is an H-bridge?
    • Its name derives from the fact that that switching transistors are designed in an 'H' configuration. Mainly used for forward and reverse control in DC motors, it can also be found in latching relay drive circuits. Other names include bridge driver and reversible motor driver.
    • Products: DC Brush Motor  
  • What is CMOS output?
    • CMOS output (complementary output) normally consists of a Pch MOS at the high output stage and an Nch MOS at the low output stage. An alternative configuration is NMOS output, comprised of Nch MOSFETs at both high and low sides. However, the high side Nch MOSFET requires a step-up voltage source for driving, such as a charge pump or bootstrap circuit, which necessitates an external capacitor.
      ROHM's H-bridge drivers are all CMOS type, eliminating the need for additional step-up circuits and external capacitors.
    • Products: DC Brush Motor  
  • How large is the through-current?
    • ROHM's H-bridge drivers integrate a circuit that prevents through current flow (also referred to as an output simultaneous ON prevention circuit). The result is greater efficiency and reliability.
    • Products: DC Brush Motor  
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