Integration Manual
Table Of Contents
- Preface
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Architecture
- 1.3 Pin-out
- 1.4 Operating modes
- 1.5 Supply interfaces
- 1.5.1 Module supply input (VCC or 3.3Vaux)
- 1.5.1.1 VCC or 3.3Vaux supply requirements
- 1.5.1.2 VCC or 3.3Vaux current consumption in 2G connected-mode
- 1.5.1.3 VCC or 3.3Vaux current consumption in 3G connected mode
- 1.5.1.4 VCC or 3.3Vaux current consumption in LTE connected-mode
- 1.5.1.5 VCC or 3.3Vaux current consumption in cyclic idle/active mode (power saving enabled)
- 1.5.1.6 VCC or 3.3Vaux current consumption in fixed active-mode (power saving disabled)
- 1.5.2 RTC supply input/output (V_BCKP)
- 1.5.3 Generic digital interfaces supply output (V_INT)
- 1.5.1 Module supply input (VCC or 3.3Vaux)
- 1.6 System function interfaces
- 1.7 Antenna interface
- 1.8 SIM interface
- 1.9 Data communication interfaces
- 1.10 Audio
- 1.11 General Purpose Input/Output
- 1.12 Mini PCIe specific signals (W_DISABLE#, LED_WWAN#)
- 1.13 Reserved pins (RSVD)
- 1.14 Not connected pins (NC)
- 1.15 System features
- 1.15.1 Network indication
- 1.15.2 Antenna supervisor
- 1.15.3 Jamming detection
- 1.15.4 IP modes of operation
- 1.15.5 Dual stack IPv4/IPv6
- 1.15.6 TCP/IP and UDP/IP
- 1.15.7 FTP
- 1.15.8 HTTP
- 1.15.9 SSL / TLS
- 1.15.10 Bearer Independent Protocol
- 1.15.11 Wi-Fi integration
- 1.15.12 Firmware update Over AT (FOAT)
- 1.15.13 Firmware update Over The Air (FOTA)
- 1.15.14 Smart temperature management
- 1.15.15 SIM Access Profile (SAP)
- 1.15.16 Power saving
- 2 Design-in
- 2.1 Overview
- 2.2 Supply interfaces
- 2.2.1 Module supply (VCC or 3.3Vaux)
- 2.2.1.1 General guidelines for VCC or 3.3Vaux supply circuit selection and design
- 2.2.1.2 Guidelines for VCC or 3.3Vaux supply circuit design using a switching regulator
- 2.2.1.3 Guidelines for VCC or 3.3Vaux supply circuit design using a Low Drop-Out linear regulator
- 2.2.1.4 Guidelines for VCC supply circuit design using a rechargeable Li-Ion or Li-Pol battery
- 2.2.1.5 Guidelines for VCC supply circuit design using a primary (disposable) battery
- 2.2.1.6 Additional guidelines for VCC or 3.3Vaux supply circuit design
- 2.2.1.7 Guidelines for external battery charging circuit
- 2.2.1.8 Guidelines for external battery charging and power path management circuit
- 2.2.1.9 Guidelines for VCC or 3.3Vaux supply layout design
- 2.2.1.10 Guidelines for grounding layout design
- 2.2.2 RTC supply output (V_BCKP)
- 2.2.3 Generic digital interfaces supply output (V_INT)
- 2.2.1 Module supply (VCC or 3.3Vaux)
- 2.3 System functions interfaces
- 2.4 Antenna interface
- 2.5 SIM interface
- 2.6 Data communication interfaces
- 2.7 Audio interface
- 2.8 General Purpose Input/Output
- 2.9 Mini PCIe specific signals (W_DISABLE#, LED_WWAN#)
- 2.10 Reserved pins (RSVD)
- 2.11 Module placement
- 2.12 TOBY-L2 series module footprint and paste mask
- 2.13 MPCI-L2 series module installation
- 2.14 Thermal guidelines
- 2.15 ESD guidelines
- 2.16 Schematic for TOBY-L2 and MPCI-L2 series module integration
- 2.17 Design-in checklist
- 3 Handling and soldering
- 4 Approvals
- 4.1 Product certification approval overview
- 4.2 US Federal Communications Commission notice
- 4.3 Innovation, Science and Economic Development Canada notice
- 4.4 Brazilian Anatel certification
- 4.5 European Conformance CE mark
- 4.6 Australian Regulatory Compliance Mark
- 4.7 Taiwanese NCC certification
- 4.8 Japanese Giteki certification
- 5 Product testing
- Appendix
- A Migration between TOBY-L1 and TOBY-L2
- B Glossary
- Related documents
- Revision history
- Contact
TOBY-L2 and MPCI-L2 series - System Integration Manual
UBX-13004618 - R26 Design-in
Page 81 of 162
Battery charging is managed in three phases:
Pre-charge constant current (active when the battery is deeply discharged): the battery is charged with a
low current, set to 10% of the fast-charge current
Fast-charge constant current: the battery is charged with the maximum current, configured by the value of
an external resistor to a value suitable for the application
Constant voltage: when the battery voltage reaches the regulated output voltage (4.2 V), the current is
progressively reduced until the charge termination is done. The charging process ends when the charging
current reaches the 10% of the fast-charge current or when the charging timer reaches the value configured
by an external capacitor
Using a battery pack with an internal NTC resistor, the MP2617 can monitor the battery temperature to protect
the battery from operating under unsafe thermal conditions.
Several parameters as the charging current, the charging timings, the input current limit, the input voltage limit,
the system output voltage can be easily set according to the specific application requirements, as the actual
electrical characteristics of the battery and the external supply / charging source: proper resistors or capacitors
have to be accordingly connected to the related pins of the IC.
C10 C13
GND
C12C11 C14
TOBY-L2 series
71
VCC
72
VCC
70
VCC
+
Primary
Source
R3
U1
EN
ILIM
ISET
TMR
AGND
VIN
C2C1
12V
NTC
PGND
SW
SYS
BAT
C4
R1
R2
D1
θ
Li-Ion/Li-Pol
Battery Pack
B1
C5
Li-Ion/Li-Polymer Battery
Charger / Regulator with
Power Path Managment
VCC
C3 C6
L1
BST
D2
VLIM
R4
R5
C7 C8 C9
C15
Figure 40: Li-Ion (or Li-Polymer) battery charging and power path management application circuit
Reference
Description
Part Number - Manufacturer
B1
Li-Ion (or Li-Polymer) battery pack with 10 k NTC
Various manufacturer
C1, C5, C6
22 µF Capacitor Ceramic X5R 1210 10% 25 V
GRM32ER61E226KE15 - Murata
C2, C4, C11
100 nF Capacitor Ceramic X7R 0402 10% 16 V
GRM155R61A104KA01 - Murata
C3
1 µF Capacitor Ceramic X7R 0603 10% 25 V
GRM188R71E105KA12 - Murata
C7, C13
68 pF Capacitor Ceramic C0G 0402 5% 50 V
GRM1555C1H680JA01 - Murata
C8, C14
15 pF Capacitor Ceramic C0G 0402 5% 25 V
GRM1555C1E150JA01 - Murata
C9, C15
8.2 pF Capacitor Ceramic C0G 0402 5% 50 V
GRM1555C1H8R2DZ01 - Murata
C10
330 µF Capacitor Tantalum D_SIZE 6.3 V 45 m
T520D337M006ATE045 - KEMET
C12
10 nF Capacitor Ceramic X7R 0402 10% 16 V
GRM155R71C103KA01 - Murata
D1, D2
Low Capacitance ESD Protection
CG0402MLE-18G - Bourns
R1, R3, R5
10 k Resistor 0402 5% 1/16 W
RC0402JR-0710KL - Yageo Phycomp
R2
1.0 k Resistor 0402 5% 0.1 W
RC0402JR-071K0L - Yageo Phycomp
R4
22 k Resistor 0402 5% 1/16 W
RC0402JR-0722KL - Yageo Phycomp
L1
1.2 µH Inductor 6 A 21 m 20%
7447745012 - Wurth
U1
Li-Ion/Li-Polymer Battery DC/DC Charger / Regulator
with integrated Power Path Management function
MP2617 - Monolithic Power Systems (MPS)
Table 27: Suggested components for Li-Ion (or Li-Polymer) battery charging and power path management application circuit