Specifications

COMPANY CONFIDENTIAL
31
4.2 Power consumption
Table 4-2 Radio system power consumption
Test condition
Estimated Power Range
(Typical)
Estimated Power Range
(Max.)
WCDMA in Suspend Mode <3 mA
WCDMA (Tx=24dBm) <800 mA <1500 mA
LTE in Suspend Mode <3 mA
LTE (Tx=23.5 dBm) <950 mA <1200 mA
LTE 3CA mode 2x 2, Tx=23.5dBm <1200 mA <2200 mA
GPS/GNSS Tracking <150 mA <300 mA
Connected Standby <3 mA
Radio Off <3 mA
4.3 Thermal dissipation proposal
4.3.1 Transmit Power policy
a. From -40 to -30
℃ , degrade max Tx power to 21±2dBm (Limited Performance)
b. From -30 to +55 ℃ , normal max Tx power with 23±2dBm (3GPP compliance)
c. From +55 to +70 ℃ , degrade max Tx power to 21±2dBm (3GPP compliance)
d. From +70 to +85 ℃ , depend on Platform thermal solution (Limited Performance)
e. Out of range from -40 to +85 ℃ , RF disables
4.3.2 Software policy
Support RF part thermal mitigation mechanism based on PA Sensor,
Level 1 – Uplink Data Throttling
Level 2 – Tx power Back off
Level 3 – Emergency Shutdown
4.3.3 Implement thermal solution on Platform side to get more thermal margin and benefit
then extend the Module operating temperature
- Add thermal pad on Module bottom side to heat dissipated to Platform PCB or chassis
- Add thermal pad and heat sink on Module top shield to thermal dissipation