Abstract : This paper analyzes the dead-time compensation mechanism of the Motorola MC68HC908MR16 (MR16) dedicated control chip for motor drives, details its hardware design and implementation process, and provides a corresponding software implementation scheme. Finally, the waveform of the dead-time compensation technology implemented in the inverter is presented. Keywords: Inverter, Dead-time compensation technology 1 Introduction Currently, most low-power general-purpose or dedicated frequency converters and AC frequency conversion home appliances adopt a typical AC-DC-AC voltage-type inverter (VSI) structure. Inverter implementation generally uses bipolar PWM modulation technology, that is, applying complementary trigger signals to the two switches on the same inverter bridge arm. Due to the characteristics of the switches themselves: both turn-on and turn-off require a certain amount of time, and the turn-off time is longer than the turn-on time. Therefore, if the turn-on and turn-off of the switches are controlled according to the ideal trigger signal, it may cause the two switches on the same bridge arm to shoot through and damage the switching devices. To prevent this shoot-through phenomenon, a certain delay time must be inserted between their turn-on and turn-off. This delay time is called the dead zone. During the dead zone, both switching transistors are in the off state, the load current freewheels through the anti-parallel diode, and the load voltage is not controlled by the switching transistors. This causes the load voltage waveform to be distorted, the average output voltage of the inverter to decrease, and the generation of 3rd, 5th, 7th, ... harmonic components that are proportional to the dead zone time and the modulation ratio, which in turn affects the input current and operating quality of the motor. This effect is quite serious when the inverter operates at a low output frequency, a high switching frequency, and a very weak load inductance. Therefore, it is necessary to compensate for the effect of the dead zone to improve the output performance of the frequency converter and improve the operating conditions of the motor. Commonly used compensation methods include current feedback type and voltage feedback type, as well as single-sided compensation and double-sided compensation, pure hardware compensation and hardware and software combined compensation, etc. However, their working principles are similar. They all generate a waveform that is opposite to the error waveform caused by the dead zone to cancel the effect of the dead zone [3,10]. Motorola's MR16 motor control chip integrates dedicated dead-zone compensation hardware circuitry, enabling reliable dead-zone compensation with only simple external current polarity detection and basic software programming. [b][align=center]For details, please click: Inverter Dead-Zone Compensation Technology Based on MC68HC9O8MR16[/align][/b]