Yes, iW-RainboW-G36M LDO 1.5V output is used for VCC_PSBATT signal. This LDO Input is fed from the VRTC_3V0 power to the Board to Board Connector 2.
For further product inquiries, please get in touch with our sales team at mktg@iwave-global.com
Please find the detailed product information here:
Zynq™ UltraScale+™ ZU5/ZU4/ZU3T/ZU3/ZU2/ZU1 MPSoC System on Module