The Apex Precision Power library of SPICE models for power operational and PWM amplifiers are readable by a wide variety of SPICE simulators. These SPICE models are provided below for download, or you can request the entire library on CD-ROM. The APEXPOWEROPAMPS.ZIP file contains APEXLINEAR.LIB (a text file with most Apex Precision Power SPICE models for power op amps) plus APEXLINEARPSPICE.ZIP and APEXLINEARBERKELEY.ZIP. These last two zip files contain text files for some models requiring different syntax for the two simulator types. The INTUSOFTSYMBOLS file is a .zip archive that contains a partial set of symbol files unique to Intusoft. TOPSPICESYMBOLS is a complete set of symbols for TopSPICE.
The Apex Precision Power library of PWM SPICE models are state average models for nine amplifiers. With no switching, these models run about one hundred times faster than the pulse-by-pulse macro models. These SPICE models are provided below for download, or you can request the entire library on CD-ROM. APEXPWM.ZIP is a .zip archive that contains apexpwm.txt, a versatile generic PWM Spice model. For details on how to use this model, see Apex-AN33 Spice Model and PWM Amplifier Applications.
The Apex Precision Power library of Voltage Reference SPICE models is currently under development. An initial offering of SPICE models is now available for these six VRE models and are provided below for download: VRE202C, VRE204M, VRE205C, VRE205M, VRE210C and VRE210M. These models are provided in PSpice, Berkeley Spice, and HSpice.
Need help with a specific circuit design question? You can tap into a wealth of power analog circuit design expertise by contacting the Apex Precision Power Applications Engineering Team. Request assistance with product selection, design suggestions, schematic review, and circuit debugging.
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