User's Manual
Table Of Contents
- Version History
- Contents
- Table Index
- Figure Index
- 1Introduction
- 2 Package Information
- 3 Interface Application
- 4 RF Specifications
- 5 Electrical Specification
- 6 SMT Production Guide
- 7 Packaging
- 8 Appendix
SIM7600G-H User manual
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3.1.1 Power Supply Design Guide
Make sure that the voltage on the VBAT pins will never drop below 3.4V, even during a transmit burst, when
current consumption may rise up to 2A. If the voltage drops below 3.4V, the RF performance may be
affected.
If the power supply for VBAT pins can support up to 2A, more than 300uF capacitors are
recommended .Otherwise users must use a total of 1000uF capacitors typically, in order to avoid of the
voltage drop more than 300mV.
Some multi-layer ceramic chip (MLCC) capacitors (0.1/1uF) with low ESR in high frequency band can be
used for EMC.
These capacitors should be put as close as possible to VBAT pads. Also, users should keep VBAT trace on
circuit board wider than 2 mm to minimize PCB trace impedance. The following figure shows the
recommended circuit.
Recommend Bead for vbat filter are BLM21PG300SN1D and MPZ2012S221A。
Figure 6: Power supply application circuit
In addition, in order to guard for over voltage protection, it is suggested to use TVS.
user could only power pin 62, 63 or only power pin 38, 39, for these pins are connected inside the
MODULE.
NOTE
NOTE