Here are 2 workflows that contain the node LatentPixelScale:

1.

Size: 8707 bytes

URL: https://github.com/ltdrdata/ComfyUI-Workflow-Component/blob/eb22a7e33dff0c5b01795a04de19a14d2eeeb27b/components/util/pixel-upscale-basic_pipe.component.json

2.

Size: 34706 bytes

URL: https://github.com/xingren23/ComfyUI-for-ComfyFlowApp/blob/c0305dc8217e8fc1c12accda14b21ba37b87f6ae/workflow/custom_nodes/ComfyUI-Impact-Pack/upscale-3x.json