PSPi 4 PCB 2

2 years ago 3040
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

Slight revision to the PSPi v4 board. This is a very rough work in progress. It's a total redesign with new schematics. The overall function will be the same to PCB 1.x, but the circuits are new. Changes include:

  • Improved battery charge detection. The board can detect how much amperage is being drawn from the battery during discharge, and can detect how much amperage is being provided to the battery during charge. This greatly improves the accuracy of the charge/discharge status.
  • No more pogo pins. The Pi will attach directly to the board, similarly to the attachment method of v3. The difference from v3 is that this board should have castellated holes that make the soldering process easier.
  • The LCD will shut off during reboots, preventing the appearance of a distorted image.
  • Better low-battery LED indication. No more blending of green and orange when the board is pulling a higher amperage.
  • Headphone board will be attached to the PCB, and will be breakaway.
  • Better audio filtering
  • Better power-on circuit. There will no longer be a condition where the system has to remain powered off for 3 seconds before powering it back on.

Documents

Sheet_1

old

PSPi v4.2

BOM

ID Name Designator Footprint Quantity Mounted
1 MP3302DJ-LF-Z U1 SOT-23-5 1 Yes C15035
2 4930056c020a3549807b7e85f160b444 D1,D3 SMAF 2 Yes C64880
3 bde11a8da6461f766f26bd1db59f260b R1,R19 0805 2 Yes C57245
4 b9dc362948be402fb96eb90853884e9d C2 0805 1 Yes C84714
5 36f610e4b3724f239289b4f8b4d53d6d R3,R22 0805 2 Yes C153163
6 70062f2965004de79c9c1a5df4e2db5f R9 0805 1 Yes C137545
7 f109ac718f8faef3346a673242682414 C3,C11,C19,C20 0805 4 Yes C90543
8 2e9288b0d1141a5f75e65668aae43789 C4,C5,C14,C1,C13,C18 0805 6 Yes C35795
9 10KΩ R6 0805 1 Yes C113193
10 100K R7,R10,R13,R15,R23 0805 5 Yes C136904
11 300KΩ(304) R11,R24 0805 2 Yes C101991
12 10uF C6 0805 1 Yes C87157
13 100nF(104) C7 0805 1 Yes C111591
14 1uF C8 0805 1 Yes C89378
15 BAT54C-7-F D2,D6,D7 SOT-23(SOT-23-3) 3 Yes C134405
16 NC7SZ125M5X U4 SOT-23-5 1 Yes C7420
17 668ee7a51ef54985b9e8b62f306c3ab8 R12 0805 1 Yes C105427
18 d45b5f61a0dc4b559ed4133cd704b4a5 R14 0805 1 Yes C95781
19 33uH L3 0806 1 Yes C91614
20 1968c36926304f51b6b62b80469a64b7 R16 0805 1 Yes C101980
21 ef3ec45cc5814987b9a69bb8c0eac08b C9 0805 1 Yes C107150
22 29fbce3bfd0a4d29b7c422ddd33a4288 C10,C12 0805 2 Yes C105505
23 7cbcf3678be640dfb937cd34aa076088 R17 0805 1 Yes C101481
24 f2386acc879ef124403c748d1bdab3d1 U5 SOT-23-5 1 Yes C40254
25 fc9b6fb8cecf435cbbd7a1b0bdce0750 R4 0805 1 Yes C101438
26 c93696974aa44dfab6b189ac6d3b5a5a U8 MSOP10 1 Yes
27 64a0bb2a39604a8080b7d4b2fbcbf0c5 U2 10051922-1010EHLF 1 Yes
28 5501fc0fabee4b93873ecac5cd6daa93 U9 10051922-2410EHLF 1 Yes 649-100519221010EHLF
29 fc3ef88267084da5bed8ab914f320d40 U10 FPC-40 1 Yes
30 7555deb5f929418c86f9315ec75d318c U11 SOP-8_EP_150MIL 1 Yes
31 aa35b47d3be84b5d9354d0501af1fdca U6 SOP-8_150MIL 1 Yes C112137
32 6a2b0abe24f94ebcbf8ab006850e64d2 U12 SOIC-14_150MIL 1 Yes C5592
33 b98052a1ddd661f673e241dea3a140fb Q1 SOIC-8_150MIL 1 Yes C17099
34 70678b4027474812a99c6250760e39b2 U3 SOT-23(SOT-23-3) 1 Yes C145100
35 bde11a8da6461f766f26bd1db59f260b R5,R8,R18 0805 3 Yes C57245
36 NC7SZ126M5X U13 SOT-23-5 1 Yes C7420
37 0dd25040c2bd48c590b73124f4528cc1 L2 INDUCTOR-SRN4012TA-4R7M 1 Yes
38 6a2c125e76044ae7911f4d3b5b6326e4 R2 1206 1 Yes C154642
39 3adf0d8f766c408f9b6c05ec99561e88 G$2 PI ZERO WITH PADS 1 Yes
40 8969e2d7c4b9434eae62f89fef7ec06b U14 MCP23017 - QFN 1 Yes
41 d64d79bfba1049eb9fa74e9fdcaf3c60 R20,R21 0805 2 Yes C105577
42 8c15d3ee87fa42e8a603122a985a99c9 U7 PSP-HEADPHONE 1 Yes
43 1uF C15,C16 0805 2 Yes C1712
44 475e147febd54602abda48e14810dce5 U15 SOT-23-5 1 Yes C46572
45 2009934b831a40108baa6c7f60e479bf C17 0805 1 Yes C128911
46 fbc76077a09345648435dbeed4ae215c U16 JST-PH-2 1 Yes
47 d4587d3ce40f431ab2497637b276400a U17 JST-SH-10PIN-1.0MM 1 Yes

Attachments

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