Overview
The MC33039PG is a high-performance closed-loop speed control adapter designed by onsemi for use in brushless DC motor control systems. This device is engineered to provide precise speed regulation without the need for a magnetic or optical tachometer. It is primarily intended for use with the MC33035 brushless motor controller but can also be applied in various other closed-loop speed control applications.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Ambient Temperature Range | TA | -40 | 85 | °C | |
| Storage Temperature Range | Tstg | -65 | 150 | °C | |
| Power Supply Operating Voltage Range | VCC | 5.5 | V | ||
| Power Supply Current | ICC | 1.8 | 3.9 | 5.0 | mA |
| Zener Voltage (IZ = 10 mA) | VZ | 7.5 | 8.25 | 9.0 | V |
| Output Voltage High State (fout, Isource = 5.0 mA) | VOH | 3.60 | 4.20 | V | |
| Output Voltage Low State (fout, Isink = 10 mA) | VOL | 0.25 | 0.50 | V | |
| Output Pulse Width (Pin 5) | tPW | 205 | 225 | 245 | μs |
Key Features
- Digital detection of each input transition for improved low-speed motor operation.
- TTL compatible inputs with hysteresis for noise immunity.
- Operation down to 5.5 V for direct powering from the MC33035 reference.
- Internal shunt regulator allows operation from a non-regulated voltage source.
- Inverter output for easy conversion between 60°/300° and 120°/240° sensor phasing conventions.
- Pb-free packages are available.
Applications
The MC33039PG is designed for use in various brushless DC motor control systems. It is particularly useful in applications requiring precise speed regulation without the need for a magnetic or optical tachometer. Common applications include:
- Brushless DC motor control in industrial automation.
- Automotive systems requiring precise motor speed control.
- Aerospace and defense applications where reliable motor control is critical.
- Consumer electronics and appliances that use brushless DC motors.
Q & A
- What is the primary function of the MC33039PG?
The MC33039PG is a high-performance closed-loop speed control adapter designed for use in brushless DC motor control systems. - What is the operating temperature range of the MC33039PG?
The operating ambient temperature range is -40°C to +85°C. - Can the MC33039PG operate with a non-regulated voltage source?
Yes, it includes an internal shunt regulator that allows operation from a non-regulated voltage source. - What is the minimum operating voltage for the MC33039PG?
The minimum operating voltage is 5.5 V. - Does the MC33039PG support Pb-free packaging?
Yes, Pb-free packages are available. - What is the purpose of the inverter output in the MC33039PG?
The inverter output is used for converting between 60°/300° and 120°/240° sensor phasing conventions. - Can the MC33039PG be used with other motor controllers besides the MC33035?
Yes, although it is primarily intended for use with the MC33035, it can be used in many other closed-loop speed control applications. - How does the MC33039PG generate a speed proportional signal?
The device generates a pulse train whose average voltage is proportional to the motor speed, which can be filtered to produce a DC voltage proportional to speed. - What are the typical output pulse widths for the MC33039PG?
The output pulse width ranges from 205 μs to 245 μs. - Is the MC33039PG suitable for low-speed motor operation?
Yes, it features digital detection of each input transition, which improves low-speed motor operation.
