PMD Juno Velocity and Torque Control IC Family Review: Specs, Price and Applications
Updated: 4 days ago
Performance Motion Devices Juno is a family of motor-control integrated circuits with distinct velocity, torque and step-motor members. This review focuses on choosing the correct control function, motor support and package for a custom controller board.
Quick Verdict
Juno is useful for OEMs designing their own motor-control electronics with a clearly defined loop and motor requirement. Select the complete IC reference and external power stage; a Juno control chip is not a finished amplified drive, and family interface lists do not apply uniformly to every member.
PMD Juno Velocity and Torque Control IC Family at a Glance
Velocity examples: MC71113 for DC brush, MC73113 for brushless DC, MC78113 for selectable DC brush/brushless DC in current velocity product information
Torque examples: MC71112/MC71112N for DC brush; MC73112/MC73112N for brushless DC
Power-stage scope: External bridge-type switching amplifier and supporting circuitry required
Package selection: Velocity examples use 64-pin TQFP; specified torque N variants use 56-pin VQFN
Interfaces: Serial, SPI, analog commands and CAN availability depend on the exact subfamily and function
Development tools: Matched developer kit, Pro-Motion and C-Motion host SDK as applicable
Price: Request a quote for the exact ordering configuration.
Technical Specifications
Specification | Documented configuration |
Velocity examples | MC71113 for DC brush, MC73113 for brushless DC, MC78113 for selectable DC brush/brushless DC in current velocity product information |
Torque examples | MC71112/MC71112N for DC brush; MC73112/MC73112N for brushless DC |
Power-stage scope | External bridge-type switching amplifier and supporting circuitry required |
Package selection | Velocity examples use 64-pin TQFP; specified torque N variants use 56-pin VQFN |
Interfaces | Serial, SPI, analog commands and CAN availability depend on the exact subfamily and function |
Development tools | Matched developer kit, Pro-Motion and C-Motion host SDK as applicable |
Juno Velocity IC Selection and Loop Rates
The velocity-control members are MC71113 for DC brush motors, MC73113 for brushless DC motors, and MC78113 for either type. PMD specifies a 64-pin TQFP package measuring 12 × 12 mm including leads. Its current velocity overview lists a programmable velocity-loop rate up to 10 kHz, a 20 kHz current-loop rate and selectable PWM rates of 20, 40, 80 or 120 kHz. Those figures apply to the MC7X113 velocity products; they should not be assigned to every Juno torque or step-motor IC.
The listed maximum quadrature input rate is 40 Mcounts/s. That input limit and the loop rates describe different parts of the controller; neither is an axis-accuracy specification. Size the external bridge, current sensing and heat removal for the motor and duty cycle, then validate low-speed behavior with the chosen feedback. Increasing the PWM setting alone does not establish a faster or more accurate machine.
Design and Build
Begin with the control loop the application requires. The velocity members and torque members perform different roles, while step-motor products form another part of the broader Juno family. Choosing a chip from a family name alone can leave a missing loop or an unsupported motor type. Identify the exact part and host responsibilities before drawing the board and defining application commands.
An integrated circuit is one part of a complete controller board. Specify the host, power stage, current-sense arrangement, feedback conditioning and power supplies together. Use the selected package drawing and electrical specification for the PCB layout. Chip dimensions and a list of control functions do not establish the production board's motor-current or thermal capacity.
Configuration and Integration
Package and communications differences also belong in the selection. The current velocity overview lists sixty-four-pin TQFP examples, while the N-suffix torque variants use a fifty-six-pin VQFN package. CANbus in the velocity overview should not become a blanket claim for every torque part. Confirm the selected interface and pin assignment from that part's reference, including the electrical requirements of analog commands, feedback and current sensing.
Define the boundary between host commands, internal control loops and external amplifier behavior. Configure the selected IC and verify scaling, direction, limits and feedback interpretation with the intended motor. Preserve the accepted host software, registers and nonvolatile settings. Software tools should match the chip reference and release rather than a visually similar family member.
MC7X113 Outer-Loop Control: Pressure, Flow and Temperature
The same MC71113, MC73113 and MC78113 devices also support an outer-loop application: an external process sensor supplies pressure, temperature or another measured quantity through the specified analog or digital SPI path. PMD describes a PID outer loop that commands the downstream PI velocity loop. This is an additional control use of the identified IC family, not a separate motor amplifier or a different chip with an interchangeable model number.
MC71113 is the DC-brush member, MC73113 the brushless-DC member, and MC78113 permits the documented motor-type selection. Identify the exact command and sensor inputs, scaling, sample timing and external bridge. A pressure-control example does not establish universal sensor compatibility or the final process response.
A cascaded process loop must be tuned against the real pump, valve, fluid volume or thermal plant. The process and velocity loops have different dynamics; simply maximizing both update rates can create poor interaction. Define saturation, sensor fault response and a bounded recovery process in the complete controller.
For replacement or a new PCB, preserve both motor-loop configuration and process-loop parameters. Qualify the final sensor, amplifier and mechanism together; a development-kit result or an IC protection signal does not independently validate the complete machine.
Applications and Use Cases
Relevant to an OEM board design that needs a specified velocity, torque or step-motor control function. Select the full IC and package reference, supporting circuit and matched development tools before committing the production layout.
The IC supplies control functions for an external power stage rather than delivering a complete motor-power rating itself. Design the bridge, gate drive, sensing, protection and thermal path as a complete circuit. Pro-Motion and a matched development board can help evaluate the control approach, but the final PCB and motor still need qualification. C-Motion is a host software library; its availability does not establish arbitrary user C-code execution inside every Juno IC.
Assess the assembled motor-control circuit against its required response and repeated duty. A control-loop frequency is distinct from complete axis bandwidth or process accuracy. The external power electronics, sensor and mechanism remain part of the observed result.
Alternatives and Selection
Compare a fully identified Juno IC implementation with a programmed microcontroller approach and a finished drive module using the same motor and control function. Include board design, power electronics, firmware integration and qualification in the comparison.
Price and Value
Price: Request a quote. The quotation should identify the exact product configuration, included options, delivery terms and support scope. Accessories and integration work should be listed separately so the hardware price can be compared on a like-for-like basis. A family name or headline specification is not a complete purchasing description.
Assess value against the work the product enables in the machine. Include the engineering needed to configure it, the equipment that must operate alongside it and the effort required to maintain or replace it. A lower component price can be outweighed by extra integration work, while additional features are valuable only when the application can use them. Compare written configurations rather than assumed package contents.
Pros and Cons
Pros
Distinct control-function members support explicit OEM selection
Integrated motor-control functions can reduce custom control-algorithm development
Matched development kits and host tools support evaluation
Cons
Requires a complete external power-stage and controller-board design
Package, motor type and interface support vary by exact member
Development-board results do not qualify the final production PCB
Who Should Consider PMD Juno Velocity and Torque Control IC Family?
Juno is useful for OEMs designing their own motor-control electronics with a clearly defined loop and motor requirement. Select the complete IC reference and external power stage; a Juno control chip is not a finished amplified drive, and family interface lists do not apply uniformly to every member.
The strongest purchasing case is a clearly defined requirement that matches the documented configuration. If the project depends on a particular option, interface or mechanical arrangement, include it explicitly in the order. Keep the accepted configuration with the equipment documentation so a later replacement preserves the intended application.
Commissioning and Acceptance
Evaluate the final PCB with its intended motor and host, including startup, current limiting, commanded transitions and interruption recovery. Verify sensing and amplifier-management behavior within the approved test procedure. Keep the accepted schematic, layout revision, component identities and software configuration together. A development kit is an evaluation aid rather than evidence that an untested production assembly meets the same requirements.
PMD Juno Velocity and Torque Control IC Family FAQ
What is PMD Juno Velocity and Torque Control IC Family?
Performance Motion Devices Juno is a family of motor-control integrated circuits with distinct velocity, torque and step-motor members. This review focuses on choosing the correct control function, motor support and package for a custom controller board.
Which configuration is reviewed?
Velocity examples: MC71113 for DC brush, MC73113 for brushless DC, MC78113 for selectable DC brush/brushless DC in current velocity product information. Torque examples: MC71112/MC71112N for DC brush; MC73112/MC73112N for brushless DC.
What is the main selection consideration?
Juno is useful for OEMs designing their own motor-control electronics with a clearly defined loop and motor requirement. Select the complete IC reference and external power stage; a Juno control chip is not a finished amplified drive, and family interface lists do not apply uniformly to every member.
What applications should it be considered for?
Relevant to an OEM board design that needs a specified velocity, torque or step-motor control function. Select the full IC and package reference, supporting circuit and matched development tools before committing the production layout.
What is a documented advantage?
Distinct control-function members support explicit OEM selection. Integrated motor-control functions can reduce custom control-algorithm development.
What limitation matters during integration?
Requires a complete external power-stage and controller-board design. Package, motor type and interface support vary by exact member.
What is the price?
Price: Request a quote. Specify the exact ordering configuration, required options, accessories and delivery terms.
How should an alternative be compared?
Compare a fully identified Juno IC implementation with a programmed microcontroller approach and a finished drive module using the same motor and control function. Include board design, power electronics, firmware integration and qualification in the comparison.
Product information: PMD Juno MC7X113 velocity and MC7X112 torque product information and Juno programming-reference documentation, with the supplied family listing.
Pricing is quotation-based and may change. Options, availability, delivery and application requirements depend on the selected ordering configuration.
