User Guide

ME310G1 Hardware Design Guide
1VV0301588 Rev. 11 Page 28 of 91 2021-03-16
ME310G1-W2 Connected Mode
General Design Rules
The main guidelines for the Power Supply Design include three different design steps:
• the electrical design
• the thermal design
• the PCB layout
Electrical Design Guidelines
The electrical design of the power supply strongly depends on the power source where
this power is drained. We will distinguish them into three categories:
• +5V input (typically PC internal regulator output)
• +12V input (typically automotive)
• Battery
4.3.1.1. +5V Source Power Supply Design Guidelines
• The desired output for the power supply is 3.8V, so there's not a big difference
between the input source and the desired output and a linear regulator can be
Mode
Measure
(Typical)
Mode
Description
Connected mode
Average
(mA)
Peak
(mA)
CATM
180
400
1 RB, RMC, TBS=5, QPSK,
21dBm, B1, B3, B8, B20, B28
300
680
1 RB, RMC, TBS=5, QPSK
26dBm, B31, B72
NBIoT
245
340
3.75KHz subcarrier spacing, 1 SC, RU 32ms, TBS=0, BPSK,
21dBm, B1, B3, B8, B20, B28
430
750
3.75KHz subcarrier spacing, 1 SC, RU 32ms, TBS=0, BPSK,
23dBm, B31, B72
65
290
15KHz subcarrier spacing, 12 SC, RU 1ms, TBS=5, QPSK,
21dBm, B1, B3, B8, B20, B28
73
730
15KHz subcarrier spacing, 12 SC, RU 1ms, TBS=5, QPSK,
23dBm, B31, B72