With Filestar you can easily convert OTB to PSD. Accessible directly in your right click menu for single or batch OTB processing. How to convert OTB to PSD:
1. Download and install the latest version of Filestar. (https://filestar.com)
2. Right click on one or more OTB file(s) on your desktop and select Convert with Filestar.
Type "convert psd" in the search box.
3. Press Run.