Designing LTE Development Board

flux

I’m blocked from modifying the project right now because execution credits are exhausted, so I can’t add components to the canvas in this run.
Current project state:
  • Project: “Latin Black Transporter” — still an empty draft project.
  • Components: 0
  • Nets: 0
  • No schematic changes were made.
What remains to be done once execution is available:
  1. Rename the project to something meaningful, e.g. “ESP32 SIM7600 LTE Dev Board”.
  2. Add the requested major components:
    • ESP32-WROVER-E
    • SIM7600G-H LTE module
    • CH9102F or CP2104 USB-UART bridge
    • IP5306 power-management IC, or TP4056 + boost converter alternative
    • USB Type-C receptacle
    • Nano SIM socket
    • MicroSD/TF socket
    • 2× 3.3 V LDO regulators such as ME6211 or AMS1117-3.3
  3. Consult datasheets before wiring:
    • ESP32 boot strapping, EN/reset, UART, SD/SPI, decoupling, and antenna keepout
    • SIM7600G-H power input, SIM interface, USB/UART interface, antenna, reset, PWRKEY, status pins
    • USB-UART bridge recommended circuit
    • IP5306 or TP4056/boost power-path requirements
    • LDO input/output capacitor requirements
  4. Build the schematic by functional blocks:
    • USB-C input and protection
    • Battery charging / boost / power-path
    • 3.3 V rails
    • ESP32 core support circuit
    • SIM7600G-H power and control
    • USB-UART programming interface
    • Nano SIM interface
    • MicroSD interface
  5. Add required support parts:
    • Decoupling capacitors on every IC power pin
    • USB-C CC pull-down resistors
    • Boot/reset resistors for ESP32
    • SIM card ESD protection if available
    • Bulk capacitance for SIM7600G-H current bursts
    • LDO input/output capacitors
  6. Run schematic review/ERC and resolve violations.
  7. Create bring-up and firmware notes after the schematic is complete.
Important design note: the SIM7600G-H has high pulsed current demand, so the power path must be sized from a real load budget before choosing the charger, boost converter, LDOs, and USB/battery current limits.
Find main modules
Choose CH9102F
Choose IP5306
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  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
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  • Generic Capacitor
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  • Generic Resistor
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Latin Black Transporter

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