SA53 – Cycle-by-cycle current limit functionality
Protection features of the SA53-IHZ include cycle-by-cycle current limit functionality that allows the motor’s power system to "partner" with the processor or DSP to control motor current in each phase rather than settle for an overall safe limit. With cycle-by-cycle current limit, these driver’s have the ability to handle the inrush of motor start-up current without de-rating the IC, even at 5 A or greater.
In addition, a patent-pending mounting technique can increase the package’s power dissipation capabilities by 3x by placing the driver upside down "through" the board and flush mounting the heatsink.
Features
- Directly connects to most embedded microcontrollers and digital signal controllers
- Integrated gate driver logic with dead-time generation and shoot-through prevention
- Wide power supply range (8.5 to 60 V)
- Over 10 A peak output current per phase
- 3 A continuous output current per phase
- Independent current sensing for each output
- User programmable cycle-by-cycle current limit protection
- Over-current and over-temperature warning signals
Applications
- Motor Drives – Industrial Controls
- Factory Automation
- Robotics
- Bidirectional DC Brush Motors
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- Motor Drives – Office Equipment
- Copiers, Fax Machines
- Vending Machines
- 2 Unidirectional DC Brush Motors
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- Motor Drives – Aerospace, Military
- Positioning Control
- Aircraft Seating
- 2 Independent Solenoid Actuators
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Buy the SA53-IHZ at Digi-Key
| Digi-Key P/N |
Cirrus Logic P/N |
Output Current (Max) |
Supply Voltage (Max) |
Switching Frequency |
Power Dissipation (Max) |
Int. Power (Max) |
| 598-1785-ND |
SA53-IHZ |
10 A |
60 V |
100 kHz |
17 W |
100 W |
The SA53-IHZ is a low cost PWM motor driver IC in the 3 amp power range. This monolithic, single package solution provides a high level of integration for driving brush DC motors in the market space between lower current devices and higher cost drivers operating on 400+ voltage supplies. The SA53-IHZ delivers 3 A of continuous output current (10 A PEAK) on supply voltages up to 60 V. A seamless digital interface is possible with either a MCU or DSP, while allowing individual control of the top side and bottom side output FETs via direct signals from the processor. A 64-pin Power Quad package (PowerQFP) measuring less than two cm2 saves on board space.
