ZSPM1000 True Digital PWM Controller

The ZSPM1000 is a configurable true-digital single-phase PWM controller for high-current, non-isolated DC/DC supplies. It operates as a synchronous step-down converter in a single-rail and a single-phase configuration. 

The ZSPM1000 integrates a digital control loop, optimized for maximum flexibility and stability, as well as load step and steady-state performance. In addition, a righ set of protection and monitoring functions is provided. On-chip, non-volatile memory (NVM) and an I2C interface facilitate configuration.


  • Fast configurability and design flexibility
  • Simplified design and integration
  • Reduced component count through system level integration
  • Simplified monitoring for system power and thermal management
  • High energy efficiency across all output loading conditions


  • Programmable digital control loop
  • Advanced, digital control techniques including Tru-sample Technology™, State-Law Control™ and Sub-cycle Response™
  • Protection features include: over-current, over-voltage, under-voltage, overload startup, restart & delay
  • Support for SMOD and ZDC drivers
  • Fuse-based NVM for improved reliability
  • Operation from a single 5V or 3.3V supply
  • Optional PMBus™ address selection without external resistors



Contact Information

Servoflo Corporation
75 Allen Street
Lexington, MA 02421

Phone: (781) 862-9572
Fax: (781) 862-9244

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