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Home » NEWEST Products » New by Manufacturer » Freescale Semiconductor » Power Switches - Freescale
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Freescale Power Switches

Freescale Power Switches

Freescale's Power Switches offer motor driver/controller ICs that use SMARTMOS technology for industrial applications. The MC34931 (single) and MC34932 (dual) DC motor drivers are monolithic thermally efficient 28V/5A H-Bridge DC motor drivers featuring real-time load current monitoring and automatic thermal back-off ensuring high availability operation in demanding high-current, high-temperature industrial applications. It is designed primarily for DC brushed and servo motor driver applications. The MC34933 is a 1.4A dual H-Bridge driver aimed at the digital camera market. The MC34937A is a field effect transistor (FET) pre-driver designed for three-phase motor control and similar applications. The IC contains three high side FET pre-drivers and three low side FET pre-drivers. Three external bootstrap capacitors provide gate charge to the high side FETs.

Freescale's 5.0A Monolithic H-Bridge Power IC is a monolithic thermally efficient 28V/5A H-Bridge DC motor driver featuring real-time load current monitoring and automatic thermal back-off ensuring high availability operation in demanding high-current, high-temperature industrial applications. It is designed primarily for DC brushed and servo motor driver applications within the current and voltage limits stated in this specification. This device is powered by SMARTMOS technology.


Additional Resources
Datasheet Datasheet
Fact Sheet Fact Sheet
Features
  • Best thermal efficiency: eSOIC package delivers 2X lower thermal impedance, saving board space and simplifying design
  • Automatic thermal back-off: Temperature regulated, peak current limiting ensures continuous high availability operation
  • Real-time load current monitoring: Analog feedback current mirror feature used for motor control or load protection
  • Design-in simplicity: Integrated H-Bridge with charge pump, control, protection and four MOSFETs
  • High efficiency: 125 mOhm typical RDS(ON)
  • 5.0V to 28V continuous operation, 42V transient
  • 5.0A continuous, 100A pulsed delivered to inductive loads
  • 3 & 5V TTL/CMOS compatible
  • Status flag output reports under-voltage, over-current, and over-temperature fault conditions
  • Output short-circuit protection (short to VPWR or GND)
  • Sleep mode with current draw < 12μA
Applications
  • Industrial
    • IP Camera
    • Kiosk (No Image Recognition)
    • Process Control, Temperature Control
    • Stationary Electronic Point of Sale (ePOS) Terminals
    • Mobile Robot (Battery Operated)
    • Unmanned Vehicles (Ground, Air, Water)
    • Machine Vision and Camera
    • Industrial Robot
  • Medical/Healthcare
    • Powered Patient Beds
    • Infusion Pumps
  • Motor Control
    • Brushed DC Motor
    • Stepper Motor
Block Diagram
Block Diagram

Freescale's MC34932 Dual Monolithic H-Bridge Power IC consists of two monolithic thermally efficient 28V/5A H-Bridge DC motor drivers in the same package. It features real-time load current monitoring and automatic thermal back-off ensuring high availability operation in demanding high-current, high-temperature industrial applications. It is designed primarily for DC brushed and DC servo motor driver applications within the current and voltage limits stated in this specification. This device is powered by SMARTMOS technology.


Additional Resources
Datasheet Datasheet
Fact Sheet Fact Sheet
Freescale MC34932 Dual Monolithic H-Bridge Power IC
Buy Freescale MC34932 Dual Monolithic H-Bridge Power IC View Product List
Features
  • Best thermal efficiency: eSOIC package delivers 2X lower thermal impedance, saving board space and simplifying design
  • Automatic thermal back-off: Temperature regulated, peak current limiting ensures continuous high availability operation
  • Real-time load current monitoring: Analog feedback current mirror feature used for motor control or load protection
  • Design-in simplicity: Integrated H-Bridge with charge pump, control, protection and four MOSFETs
  • High efficiency: 125mΩ typical RDS(ON)
  • 5.0V to 28V continuous operation, 42V transient
  • 5.0A continuous, 100A pulsed delivered to inductive loads
  • 3 & 5V TTL/CMOS compatible
  • Status flag output reports under-voltage, over-current, and over-temperature fault conditions
  • Output short-circuit protection (short to VPWR or GND)
  • Sleep mode with current draw <12μA (each half with inputs floating or set to match default logic states)

Applications
  • Industrial
    • IP Camera
    • Kiosk (No Image Recognition)
    • Process Control, Temperature Control
    • Stationary Electronic Point of Sale (ePOS) Terminals
    • Mobile Robot (Battery Operated)
    • Unmanned Vehicles (Ground, Air, Water)
    • Machine Vision and Camera
    • Industrial Robot
  • Medical/Healthcare
    • Powered Patient Beds
    • Infusion Pumps
  • Motor Control
    • Brushed DC Motor
    • Stepper Motor

Block Diagram
Block Diagram

Freescale MC34933 two channel H-Bridge driver is aimed at the digital camera market. MC34933 uses Freescale's proprietary SMOS8 Bi CMOS process to deliver a low power device, with a maximum quiescent current of 100μA for the motor drive supply and 400μA for the control logic supply. This device has four operation modes: forward, reverse, brake, and tri-state (high-impedance). The 34933 employs a VCC detection circuit to sense when the logic supply switches to an off-state with a maximum current of 1uA to extend battery life.


Additional Resources
Fact Sheet Fact Sheet

Features
  • Built-in 2-channel H-Bridge driver
  • H-Bridge operation voltage 2.0 V~7.0V
  • Max. load output current 1.0A @ TA = 25°C
  • Low total RDS(ON) 0.8Ω (typ), 1.0Ω (max.) @ TA = 25°C peak
  • Dual channel parallel driver, RDS(ON) 0.4Ω (typ.). max. DC current 1.4A
  • PWM control input frequency up to 200kHz
  • Built-in shoot-through current prevention circuit
  • Built-in charge pump circuit (external cap type)
  • VCC low voltage detection for logic power supply voltage
  • Thermal detection for H-Bridge driver

Application Diagram
Application Diagram

Freescale's MC34937A Three Phase Field Effect Transistor Pre-Driver is designed for three-phase motor control and similar applications. The integrated circuit (IC) uses SMARTMOS technology. The IC contains three high side FET pre-drivers and three low side FET pre-drivers. Three external bootstrap capacitors provide gate charge to the high side FETs. The IC interfaces to a MCU via six direct input control signals, an SPI port for device setup and fault detection, an asynchronous reset, an interrupt and two enable signals. Both 5.0 and 3.0V logic level inputs are accepted and 5.0 V logic level outputs are provided.


Additional Resources
Datasheet Datasheet
Fact Sheet Fact Sheet
Freescale MC34937A Three Phase Field Effect Transistor Pre-Driver
Buy Freescale MC34937A Three Phase Field Effect Transistor Pre-Driver View Product List
Features
  • Extended supply voltage operating range: 6.0 to 58V
  • Wide dead time range (50ns to 12μs) programmable via the SPI port
  • External FET gate drive capability of >1.0A with protection
  • Charge pump ensures sufficient external FET drive at low supply voltages
  • Device protection against reverse charge-injection from CGD and CGS of external FETS
  • Integrated overcurrent, desaturation, and phase fault-detection
  • Immunity against positive or negative transient voltage spikes on the gate driver
  • Current shoot-through protection built into dead time control
  • Supports direct 3.3V and 5.0V logic interface to MCUs
  • Integrated current sensing amplifier
  • Device configuration and diagnostics through the SPI
Applications
  • Consumer
    • Room Air Conditioning System
    • Vacuum Cleaners
    • Power Tools
    • Robotic Lawn Mower
    • Electric Bike (ebike)
  • Industrial
    • Pumps
    • Robotics
    • Fans
    • Portable Power Tools
  • Medical/Healthcare
    • Continuous Positive Airway Pressure (CPAP) Machine
    • Electric Wheelchair
  • Motor Control
    • Brushless DC (BLDC) Motor
Block Diagram
Block Diagram
 
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