Telit Wireless Solutions FN990 Series Hardware Design Guide

FN990 Family Hardware Design Guide
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Page 26 of 83
2024-05-29
5 POWER SUPPLY
The power supply circuitry and board layout are very important areas of the whole product
design, with a critical impact on the overall product performance. Please follow carefully
the following requirements and guidelines to ensure a reliable and stable design.
5.1 Power Supply Requirements
The FN990 Family power requirements are as follows:
Table 15: Power Supply Requirements
Power Supply
Value
Nominal Supply Voltage
3.3V
Supply Voltage Range
3.135 V – 4.4 V
Maximum ripple on the module input supply
30 mV
Peak current consumption
3.3 V @ 4 A
5.2 Power Consumption
Table 16: FN990 Family Current Consumption
Mode
Average
[Typ.]
Mode Description
IDLE Mode
CFUN=1
35mA
No call connection
USB is connected to a host
Airplane Mode (PSMWDISACFG=1, W_DISABLE_N: Low)
CFUN=4
< 3mA
Tx and Rx are disabled; the module is not registered on the
network (Airplane mode)
USB is disconnected
Standby Mode (PSMWDISACFG=1, W_DISABLE_N: Low)
CFUN=1
< 5mA
Module cycles between wake and sleep
USB is disconnected
Operative Mode (WCDMA)
WCDMA Voice
850mA
WCDMA B1 voice call (Tx=23dBm)
WCDMA HSPA
650mA
WCDAM data call (DC-HSDPA up to 42Mbps, Max through-
put)
Operative Mode (LTE)
Single-mode
(1DL/1UL SISO)
1000mA
Non-CA, B3 BW 10MHz, 1 RB, 23dBm, QPSK DL / QPSK UL
7DLCA (4x4,2x2MIMO) with
1UL(SISO)
1450mA
CA_1A-3C-7C-20A-38A, Full RB, 256QAM DL/ 256QAM UL
(1500Mbps DL / 103Mbps UL)
5DLCA (4x4MIMO) with
1UL(SISO)
1150mA
CA_1A-3C-7C, Full RB, 256QAM DL/ 256QAM UL (2Gbps DL
/ 103Mbps UL)
Operative Mode (NR-FR1)
NSA mode
900 mA
EN-DC_1A (1DL/UL SISO) -n78A (1DL/1UL SISO)
LTE: BW 20MHz, 1 RB, QPSK DL / QPSK UL, 23dBm

Telit Wireless Solutions FN990 Series Specifications

General

Brand	Telit Wireless Solutions
Model	FN990 Series
Category	Computer Hardware
Language	English