Specifications

PLS63-W Hardware Interface Overview
3 Operating Characteristics
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Page 31 of 48
3 Operating Characteristics
3.1 Power Supply
PLS63-W needs to be connected to a power supply at the SMT application interface - 4 lines
BATT+, and GND. There are two separate voltage domains for BATT+:
•BATT+
BB
with two lines for the general power management.
•BATT+
RF
with two lines for the RF.
Please note that throughout the document BATT+ refers to both voltage domains and power
supply lines - BATT+
BB
and BATT+
RF
.
The main power supply from an external application has to be a single voltage source and has
to be expanded to sub paths (star structure). 150µF capacitors should be placed as close as
possible to the BATT+ pads. Figure 21 shows a sample circuit for decoupling capacitors for
BATT+.
Figure 21: Decoupling capacitor(s) for BATT+
The power supply of PLS63-W must be able to provide the peak current during the uplink trans-
mission.
All the key functions for supplying power to the device are handled by the power management
section of the analog controller. This IC provides the following features:
• Stabilizes the supply voltages for the baseband using low drop linear voltage regulators and
DC-DC step down switching regulators.
• Switches the module's power voltages for the power-up and -down procedures.
• SIM switch to provide SIM power supply.
BATT+
2
2
150μF low ESR capacitors
GND
BATT+
BB
BATT+
RF
Module
SMT interface