Cirrus - SA57-IHZ Brush DC Motor Driver IC

SA57-IHZ Brush DC Motor Driver IC

598-1485-ND SA57-IHZ Brush DC Motor Driver IC

The SA57-IHZ is a fully integrated switching amplifier designed primarily to drive DC brush motors. Two independent half bridges provide up to 17A PEAK output current under microcontroller or DSC control. Thermal and short circuit monitoring is provided, which generates fault signals for the microcontroller to take appropriate action.

Additionally, cycle-by-cycle current limit offers user programmable hardware protection independent of the microcontroller. Output current is measured using an innovative low loss technique. The SA57-IHZ is built using a multi-technology process allowing CMOS logic control and complementary DMOS output power devices on the same IC. Use of P-channel high side FETs enables 60V operation without bootstrap or charge pump circuitry.

The 64-pin PowerQuad surface mount package balances excellent thermal performance with the advantages of a low profile surface mount package. Datasheet Block Diagram

Features

	•	Low cost intelligent switching amplifier
	•	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 (8.5V to 60V)
	•	Up to 17A PEAK output current per phase
	•	5A continuous output current per phase 8A continuous for A-Grade (SA57A-FHZ)
	•	Extended operating temperature range -40°C up to +125°C for A-Grade (SA57A-FHZ)

	•	Independent current sensing for each output
	•	User programmable cycle-by-cycle current limit protection
	•	Over-current and over-temperature warning signals

Applications

	•	Bidirectional DC brush motors
	•	2 unidirectional DC brush motors
	•	2 independent solenoid actuators
	•	Stepper motors

Product Training Module:
SA57-IHZ Brush DC Motor Driver

598-1487-ND SA57-IHZ Demo Board DB63


The DB63 is designed to demonstrate the capabilities of the SA57-IHZ DC brush motor driver IC. This fully assembled demonstration allows the user to directly control the speed and direction of the motor. An onboard circuit controls the direction and provides four quadrant PWM signals to control the power outputs of the SA57-IHZ. LEDs provide feedback for motor control status and fault indications. Provisions on the DB63 allow the user to bypass the onboard control circuit and directly interface with the SA57-IHZ motor driver. The DB63 demonstrates proper layout techniques for the SA57-IHZ high current switching amplifier. The economical construction uses only a two-sided PCB and allows the SA57-IHZ to deliver peak currents of over 1kW.

Additional Information
Datasheet