Implementation Recommendations; Applying Power On Vcc - Wavecom Gx64 Application Note

3

Implementation Recommendations

This section describes how to implement features related to the Power Management
of the Wireless CPUs.
3.1

Applying power on VCC

Main power is applied to VCC using GND as reference. The source can be any of the
following listed types:
•
•
•
Reference designs for AC/DC and DC/DC supplies can be found in Appendix A and B
at the end of this document.
Parameter
VCC
I
PEAK
I
RMS
1,2
This is the average maximum current during the transmit pulse. The absolute maximum current can
be up to 2500mA, but is only available for a couple of microseconds.
Gx64 APPLICATION NOTE
Power Management
Page: 11/30
Li-Ion battery (3.7V nominal)
AC/DC power supply (3.6V nominal)
DC/DC power supply (3.6V nominal)
Condition
Supply voltage level
Voice/CSD call (1up, 1down)
at max power (32dBm), 4.7ms duration
GSM850, GPRS, Class 10 (2up, 3down)
at max power (32dBm), 9.4ms duration
Voice/CSD call (1 up, 1 down)
at max power (32dBm), 4.7ms duration
GSM850, GPRS, Class 10 (2 up, 3 down)
at max power (32dBm), 9.4ms duration
Standby (locked on channel)
Sleep mode
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Limits
Min. Avg. Max.
3.2 3.6 4.5
2100
1
2100
2
350
560
15 25 35
1.4 3.5
Unit
V
mA
mA
mA
mA
mA
mA