Power Design for IoT Device

Thought for 2 mins 46 sec

Ya, bisa. Di proyek ini D3 memang sudah memakai USBLC6-2SC6Y dan cocok untuk port USB‑C charge‑only J3 sebagai proteksi ESD/TVS, khususnya pada VBUS.

Ringkasan data penting dari datasheet USBLC6-2SC6Y:

Aplikasi: proteksi ESD untuk antarmuka kecepatan tinggi (USB 2.0 hingga 480 Mb/s). Melindungi 2 jalur data.
Level ESD (IEC 61000-4-2): ±8 kV contact, ±15 kV air.
Kanal VBUS:
- Reverse standoff (dirating) diuji pada 5.25 V (leakage 10–150 nA).
- Breakdown VBR (VBUS–GND) 6 V (IR = 1 mA).
- Clamping VCL: 12 V @ 1 A (8/20 µs), 17 V @ 5 A (8/20 µs).
Kapasitansi:
- I/O–GND: 2.5–3.5 pF (VR = 1.65 V).
- I/O–I/O: 1.2–1.7 pF (VR = 1.65 V).
Pinout: I/O1, I/O2, GND, VBUS.

Catatan penerapan pada desain Anda:

VBUS: Penempatan D3 di jalur VBUS J3 → U4 sudah tepat. VBR 6 V berada di atas rentang 5.25 V, sehingga tidak mudah “false trigger” saat 5 V normal, sesuai best practice.
CC lines: Untuk CC1/CC2, tetap pakai ESD kapasitansi sangat rendah seperti D1 dan D2. Best practice: proteksi ESD untuk jalur data/negosiasi memakai TVS bidirectional berkapasitansi di bawah 1 pF per line; pilihan Anda di CC sudah tepat.
Penempatan: Pasang komponen proteksi sedekat mungkin ke konektor J3, jalur ke GND sangat pendek dengan via langsung ke ground plane. Pertimbangkan juga elemen pembatas arus/EMI di sisi VBUS sesuai kebutuhan sistem.

Jika Anda ingin, saya bisa cek cepat koneksi pin D3 (VBUS dan GND sudah benar; I/O1/I/O2 boleh tidak dipakai bila tidak ada D+/D-) dan beri rekomendasi penataan layout di sekitar konektor USB‑C.

Minta cek koneksi D3

Tanya perlunya EMI filter

Tanya proteksi D+ D-

Tanya penempatan layout

Konfirmasi CC line protection

LED1

LED2

SW1

SW2

SW3

Reviews

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Project Name

Description

Updated ERC-Cleaned Design Without Q2, C1, and C2 (ERC-verified removal of Q2 2N7002K, C1 10uF bulk, and C2 100nF decoupling; no changes to remaining power paths or circuitry)

Properties

Power R…rements

System Architecture

Diagram

Connectivity

Project Description

BAT Net …nections

Domain

Pricing & Availability

Distributor	Qty 1
Arrow	$3.39–$6.69
Digi-Key	$3.92–$6.43
LCSC	$10.78–$11.19
Mouser	$8.24–$8.52
TME	$0.45
Verical	$4.06–$7.30

Controls

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