Specifications
Table Of Contents
- Contents
- Tables
- Figures
- 1 Introduction
- 2 Interface Characteristics
- 2.1 Application Interface
- 2.1.1 USB Interface
- 2.1.2 Serial Interface ASC0
- 2.1.3 Serial Interface ASC1
- 2.1.4 UICC/SIM/USIM Interface
- 2.1.5 Analog Audio Interface
- 2.1.6 Digital Audio Interface
- 2.1.7 GPIO Interface
- 2.1.8 I2C Interface
- 2.1.9 SPI Interface
- 2.1.10 HSIC Interface
- 2.1.11 PWM Interfaces
- 2.1.12 Pulse Counter
- 2.1.13 Status LED
- 2.1.14 Fast Shutdown
- 2.2 RF Antenna Interface
- 2.3 Sample Application
- 2.1 Application Interface
- 3 Operating Characteristics
- 4 Mechanical Dimensions, Mounting and Packaging
- 5 Regulatory and Type Approval Information
- 6 Document Information
- 7 Appendix
Cinterion
®
EHS6-A Hardware Interface Overview
3.2 Power Supply
24
EHS6-A_HIO_v04.000 2019-03-05
Confidential / Preliminary
Page 24 of 40
3.2 Power Supply
EHS6-A needs to be connected to a power supply at the SMT application interface - 2 lines
BATT+, and GND. There are two separate voltage domains for BATT+:
•BATT+
BB
with a line for the general power management.
•BATT+
RF
with a line for the GSM power amplifier supply.
Please note that throughout the document BATT+ refers to both voltage domains and power
supply lines - BATT+
BB
and BATT+
RF
.
The power supply of EHS6-A has to be a single voltage source at BATT+
BB
and BATT+
RF
. It
must be able to provide the peak current during the uplink transmission.
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
a DC-DC step down switching regulator.
• Switches the module's power voltages for the power-up and -down procedures.
• SIM switch to provide SIM power supply.