Overview
The MC33033DW is a high-performance, monolithic brushless DC motor controller designed by ON Semiconductor. This device is part of the second generation of brushless DC motor controllers and is derived from the full-featured MC33034 and MC33035 controllers. It is optimized for general-purpose applications and is constructed using bipolar analog technology, offering robust performance in hostile industrial environments. The MC33033DW includes all the active functions necessary for implementing open-loop, three or four-phase motor control systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 10 | - | 30 | V |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Type | - | - | 20-SOIC | - |
| Motor Type | - | - | Brushless DC (BLDC) | - |
| Oscillator Frequency | 22 | 25 | 28 | kHz |
| Power Supply Current | 15 | - | 22 | mA |
| Output Configuration | - | - | Pre-Driver - Half Bridge (3) | - |
| Mounting Type | - | - | Surface Mount | - |
Key Features
- Operates brushless motors with electrical sensor phasings of 60°/300° or 120°/240° and can also control brush DC motors.
- Undervoltage lockout and internal thermal shutdown for protection.
- Cycle-by-cycle current limiting with a selectable time delayed latched shutdown mode.
- Temperature compensated reference capable of supplying sensor power.
- Frequency programmable sawtooth oscillator.
- Fully accessible error amplifier for closed-loop servo applications.
- Three open collector top drive outputs and three high current totem pole bottom driver outputs for driving power MOSFETs.
- Simple analog interface for ease of use in circuits.
- Integration of multiple functions reduces external component count.
Applications
The MC33033DW is designed for general-purpose applications involving brushless DC motors. It is suitable for various industrial environments due to its robust performance and protective features. Typical applications include:
- Industrial automation and control systems.
- Motor control in HVAC systems.
- Automotive systems requiring robust motor control.
- Medical devices and equipment.
- Consumer electronics requiring reliable motor control.
Q & A
- What is the operating voltage range of the MC33033DW?
The MC33033DW operates within a supply voltage range of 10 V to 30 V.
- What types of motors can the MC33033DW control?
The MC33033DW can control brushless DC motors with electrical sensor phasings of 60°/300° or 120°/240° and also brush DC motors.
- What protective features does the MC33033DW include?
The MC33033DW includes undervoltage lockout, cycle-by-cycle current limiting with a selectable time delayed latched shutdown mode, and internal thermal shutdown.
- What is the package type of the MC33033DW?
The MC33033DW comes in a 20-SOIC package.
- What is the operating temperature range of the MC33033DW?
The operating temperature range is from -40°C to 85°C.
- How does the MC33033DW configure for different sensor phasings?
The MC33033DW has a 60°/120° select pin that configures the rotor position decoder for either 60° or 120° sensor electrical phasing inputs.
- What is the purpose of the error amplifier in the MC33033DW?
The error amplifier is fully accessible and is used for closed-loop servo applications.
- What type of outputs does the MC33033DW have?
The MC33033DW has three open collector top drive outputs and three high current totem pole bottom driver outputs.
- Is the MC33033DW suitable for industrial environments?
Yes, the MC33033DW is constructed using bipolar analog technology, making it robust and suitable for hostile industrial environments.
- What is the oscillator frequency range of the MC33033DW?
The oscillator frequency range is from 22 kHz to 28 kHz.
