ATLAS® Digital Amplifiers

ATLAS® Digital Amplifiers are compact single-axis amplifiers that provide high-performance torque control of DC brush, brushless DC, and step motors. They are packaged in a compact solderable module and utilise standard through-hole pins for all connections.

High Performance in an Ultra-Compact Package

ATLAS® Digital Amplifiers are used for direct control of motor torque, or in conjunction with higher-level controllers for velocity or positioning applications. Their very compact size and high-power output make them ideally suited for applications such as laboratory automation, scientific instruments, general-purpose motion control, HVAC, fan & pump controllers, and industrial motor control applications. ATLAS Amplifiers are provided in both vertical and horizontal mounting configurations, and with and without heat sink attachment tabs.


ATLAS® digital amplifiers provide many advanced control features including user-programmable gain parameters, performance trace, field-oriented control and I2t current management. Atlas amplifiers are powered from a single supply voltage, providing automatic protection from overcurrent, undervoltage, overvoltage, overtemperature, and short-circuit faults.


The ATLAS® family drives are designed to work seamlessly with PMD’s Magellan family of Motion Processor ICs. As an alternative, they can be used with dedicated FPGAs, digital signal processors, or general-purpose microprocessors. Communication is via SPI (Serial Peripheral Interface) using a simple, packet-oriented protocol. For step motors, in addition to the SPI format, a pulse & direction
input mode is provided.


  • Total power output up to 1 Kilowatt
  • Digital high-performance torque control
  • Ultra-compact solderable design (38.5mm x 38.6mm x 15.2mm)
  • Low cost and extremely efficient
  • Programmable control
  • Utilise standard through-hole pins for all connections



Parameter Value
Supported Motor Types Brushless DC, DC Brush, Step motor
Voltage Input Ultra Compact 12 – 48VDC; Compact 12-56VDC
Brushless DC Continuous current output 1.5 Arms, 5.0 Arms or 10 Arms
Brushless DC Peak current output 3.8 Amps, 12.5 Amps or 25 Amps
Brushless DC Continuous power output 75, 250 or 500W
DC Brush Continuous current output 1.5 ADC, 7 ADC or 14 ADC
DC Brush Peak current output 3.8 Amps, 12.5 Amps or 25Amps
DC Brush Continuous power output 75, 250 or 500W
Step Continuous current output 1.5 Arms, 4.5 Arms or 9 Arms
Step Continuous power output 75, 250 or 500W
Microstepping resolution 256
PWM frequency 20, 40, 80, 120 kHz
Current Loop rate 20 kHz
User Programmability: Non-volatile user configuration storage
                     Trace Memory 2 kB
                      I/Os FaultOut, Enable
Safety: Short Circuit, Overcurrent, i2t Current Foldback, SPI Watchdog, Overvoltage, Undervoltage
Operating Temperature 0° – 40° C
Compliance: RoHs, CE LVD:EN60204-1, EMC-D: EN61000-6-1, EN61000-6-3, EN55011, UL
Designed to UL508c, UL840 and EN60204-1
Mechanical Dimensions 26.8mm x 26.7mm x 13.4mm or 38.5 mm x 38.6 mm x 15.2 mm
Weight 28.5 g (1.0 oz)

Atlas Digital Amplifier Users Guide

Data Sheet – ATLAS Digital Amplifiers

Atlas Amplifier Complete Technical Reference Manual