ZSPM1005
True Digital PWM Controller (Single-Phase, Single-Rail)
© 2014 Zentrum Mikroelektronik Dresden AG — Rev.2.00 — October 14, 2014. All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated,
stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
For more information, contact ZMDI via SPM@zmdi.com.
Brief Description
The ZSPM1005 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 single-phase con-
figuration.
The ZSPM1005 integrates a digital control loop, opti-
mized for maximum flexibility and stability as well as
load step and steady-state performance. In addition,
a rich set of protection and monitoring functions is
provided. To facilitate user configuration of the part,
a set of configuration options can be pre-prog-
rammed in the ZSPM1005 that can be selected by
setting the values of two external resistors.
ZMDI’s Pink Power Designer™; a PC-based, user-
friendly interface to the ZSPM1005, can be used to
expedite the design of the digital compensator. It
offers intuitive configuration methods for additional
features, such as protection and sequencing. Once
the part is programmed, the resistor options can be
used to select the required configuration without a
digital bus.
Features
Programmable digital control loop
Advanced, digital control techniques
Tru-sample Technology™
State-Law Control™ (SLC)
Sub-cycle Response™ (SCR)
Improved transient response and noise immunity
Protection features
Over-current protection
Over-voltage protection (VIN, VOUT)
Under-voltage protection (VIN, VOUT)
Overloaded startup
Restart and delay
Support for SMOD and ZCD drivers
Fuse-based one-time programmable (OTP)
nonvolatile memory for improved reliability
Operation from a single 5V or 3.3V supply
2-pin configuration for compensation, output
voltage, and more
Benefits
Fast configuration and design flexibility improves
time-to-market
Simplified design and integration
FPGA designer-friendly solution
Highest power density with smallest footprint
Pin-to-pin compatible with the ZSPM1000 PWM
controller enabling point-of-load power module
platform designs with or without digital
communication
Higher energy efficiency across all output loading
conditions
Available Support
Evaluation Kit
PC-based Pink Power Designer™
Physical Characteristics
Operation temperature: -40°C to +125°C
VOUT max: 5V
Lead free (RoHS compliant) 24-pin QFN package
(4mm x 4mm)
ZSPM1005 Typical Application Diagram