PM-DC power module datasheet

This is a preliminary datasheet for review only. Changes are likely before release.

Overview

The Particle PM-DC power module is a small module that contains:

  • 4V to 40VDC input
  • 3.3V regulated output for MCU (1A)
  • 4.0V output for cellular modem (2.5A)

It can either be:

  • A castellated module intended to be reflow soldered to your M.2 SoM base board
  • A module with male pins on the bottom that can be plugged into a socket on your M.2 SoM base board

The PM-BAT power module is also available if you would like support for a LiPo battery as well as DC input.

Block diagram

Dimensions

Dimensions

Dimensions

Dimensions in mm

  • Module is 35mm x 22.86mm (1.38" x 0.9")
  • Pins and castellated holes are 2.54mm (0.1") apart

Pinout

Pinout
Pin Pin Name Description
1 3V3 Power output 3.3V
2 3V3_AUX Power output 3.3V, controllable
3 5V Power output 5V (not available on this module)
4 5V Power output 5V (not available on this module)
5 VCC Power output 3.9V 2A for cellular modem
6 VCC Power output 3.9V 2A for cellular modem
7 EN_AUX Enable 33_AUX (has 100K pull-down to default off)
8 NC Leave unconnected
9 GND Ground
10 GND Ground
11 VIN Power in (4V - 40V)
12 VIN Power in (4V - 40V)
13 NC Leave unconnected (charge indicator on PM-BAT)
14 NC Leave unconnected (SCL on PM-BAT)
15 NC Leave unconnected (SDA on PM-BAT)
16 NC Leave unconnected (FUEL_INT on PM-BAT)
17 NC Leave unconnected (temperature sensor on PM-BAT)
18 NC Leave unconnected (VBAT on PM-BAT)
19 NC Leave unconnected (VBAT on PM-BAT)
20 NC Leave unconnected (VBAT on PM-BAT)
21 GND Ground
22 GND Ground
23 NC Leave unconnected (MCU reset on PM-BAT)
24 NC Leave unconnected (power good on PM-BAT)
25 ENABLE Power output enable. Has internal pull-up to VSYS, pull to GND to disable power outputs.

3V3_AUX is powered by 3V3 via a load switch (TPS22918). It can supply up to the full 2A of 3V3. It defaults to off due to a pull-down resistor on the pin. Pull to 3V3 to enable the 3V3_AUX output.

If your base board is designed for the PM-BAT power module, you can substitute the PM-DC and the PM-DC power module will function properly, but features such as power management, battery input, charge LED, etc. will not be available, of course.

Land pattern (SMD)

Land pattern

Dimensions in mm

Pin layout

Pin pattern

Dimensions in mm

  • Male header pins are 0.1" spacing, 12 or 13 pins per side
  • Two rows, spaced 0.8" (20.32mm) apart

The mating header is available from a large number of suppliers in both PTH and SMD styles.

Style Manufacturer Model Example
PTH (12) Sullins PPTC121LFBN-RC Digikey
PTH (13) Sullins PPTC131LFBN-RC Digikey
SMD (12) Sullins NPTC121KFXC-RC Digikey
SMD (13) Sullins NPTC131KFXC-RC Digikey

Schematic

Module schematic

Ordering information

To be provided at a later date.

Version history

Revision Date Author Comments
pre 2024-04-15 RK Initial version