USB-C PD board with ESP32-S3

Complete initial design:
- CH224K PD sink controller (custom corrected symbol)
- USB-C receptacle (16-pin USB2.0)
- P-Channel MOSFET VBUS switch
- LD1117S33 3.3V LDO regulator (800mA)
- ESP32-S3-WROOM-1 module
- 15 nets: VBUS, VOUT, 3V3, GATE, CC1/CC2, USB_DP/USB_DN
- 5.1kΩ CC pull-down resistors
- CFG1/CFG2 for PD voltage selection
- Input/output decoupling capacitors

USB_PD_ESP32S3.kicad_pcb

@@ -0,0 +1,95 @@
+(kicad_pcb
+	(version 20260206)
+	(generator "pcbnew")
+	(generator_version "10.0")
+	(general
+		(thickness 1.6)
+		(legacy_teardrops no)
+	)
+	(paper "A4")
+	(title_block
+		(title "USB_PD_ESP32S3")
+		(date "2026-06-20")
+	)
+	(layers
+		(0 "F.Cu" signal)
+		(2 "B.Cu" signal)
+		(9 "F.Adhes" user "F.Adhesive")
+		(11 "B.Adhes" user "B.Adhesive")
+		(13 "F.Paste" user)
+		(15 "B.Paste" user)
+		(5 "F.SilkS" user "F.Silkscreen")
+		(7 "B.SilkS" user "B.Silkscreen")
+		(1 "F.Mask" user)
+		(3 "B.Mask" user)
+		(17 "Dwgs.User" user "User.Drawings")
+		(19 "Cmts.User" user "User.Comments")
+		(21 "Eco1.User" user "User.Eco1")
+		(23 "Eco2.User" user "User.Eco2")
+		(25 "Edge.Cuts" user)
+		(27 "Margin" user)
+		(31 "F.CrtYd" user "F.Courtyard")
+		(29 "B.CrtYd" user "B.Courtyard")
+		(35 "F.Fab" user)
+		(33 "B.Fab" user)
+		(39 "User.1" user)
+		(41 "User.2" user)
+		(43 "User.3" user)
+		(45 "User.4" user)
+	)
+	(setup
+		(pad_to_mask_clearance 0)
+		(allow_soldermask_bridges_in_footprints no)
+		(tenting
+			(front yes)
+			(back yes)
+		)
+		(covering
+			(front no)
+			(back no)
+		)
+		(plugging
+			(front no)
+			(back no)
+		)
+		(capping no)
+		(filling no)
+		(pcbplotparams
+			(layerselection 0x00000000_00000000_55555555_5755f5ff)
+			(plot_on_all_layers_selection 0x00000000_00000000_00000000_00000000)
+			(disableapertmacros no)
+			(usegerberextensions no)
+			(usegerberattributes yes)
+			(usegerberadvancedattributes yes)
+			(creategerberjobfile yes)
+			(dashed_line_dash_ratio 12)
+			(dashed_line_gap_ratio 3)
+			(svgprecision 4)
+			(plotframeref no)
+			(mode 1)
+			(useauxorigin no)
+			(pdf_front_fp_property_popups yes)
+			(pdf_back_fp_property_popups yes)
+			(pdf_metadata yes)
+			(pdf_single_document no)
+			(dxfpolygonmode yes)
+			(dxfimperialunits yes)
+			(dxfusepcbnewfont yes)
+			(psnegative no)
+			(psa4output no)
+			(plot_black_and_white yes)
+			(sketchpadsonfab no)
+			(plotpadnumbers no)
+			(hidednponfab no)
+			(sketchdnponfab yes)
+			(crossoutdnponfab yes)
+			(subtractmaskfromsilk no)
+			(outputformat 1)
+			(mirror no)
+			(drillshape 1)
+			(scaleselection 1)
+			(outputdirectory "")
+		)
+	)
+	(embedded_fonts no)
+)

USB_PD_ESP32S3.kicad_prl

@@ -0,0 +1,105 @@
+{
+  "board": {
+    "active_layer": 0,
+    "active_layer_preset": "",
+    "auto_track_width": true,
+    "hidden_netclasses": [],
+    "hidden_nets": [],
+    "high_contrast_mode": 0,
+    "net_color_mode": 1,
+    "opacity": {
+      "images": 0.6,
+      "pads": 1.0,
+      "shapes": 1.0,
+      "tracks": 1.0,
+      "vias": 1.0,
+      "zones": 0.6
+    },
+    "prototype_zone_fills": false,
+    "selection_filter": {
+      "dimensions": true,
+      "footprints": true,
+      "graphics": true,
+      "keepouts": true,
+      "lockedItems": false,
+      "otherItems": true,
+      "pads": true,
+      "text": true,
+      "tracks": true,
+      "vias": true,
+      "zones": true
+    },
+    "visible_items": [
+      "vias",
+      "footprint_text",
+      "footprint_anchors",
+      "ratsnest",
+      "grid",
+      "footprints_front",
+      "footprints_back",
+      "footprint_values",
+      "footprint_references",
+      "tracks",
+      "drc_errors",
+      "drawing_sheet",
+      "bitmaps",
+      "pads",
+      "zones",
+      "drc_warnings",
+      "drc_exclusions",
+      "locked_item_shadows",
+      "conflict_shadows",
+      "shapes",
+      "board_outline_area",
+      "ly_points"
+    ],
+    "visible_layers": "ffffffff_ffffffff_ffffffff_ffffffff",
+    "zone_display_mode": 0
+  },
+  "git": {
+    "integration_disabled": false,
+    "repo_type": "",
+    "repo_username": "",
+    "ssh_key": ""
+  },
+  "meta": {
+    "filename": "USB_PD_ESP32S3.kicad_prl",
+    "version": 5
+  },
+  "net_inspector_panel": {
+    "col_hidden": [],
+    "col_order": [],
+    "col_widths": [],
+    "custom_group_rules": [],
+    "expanded_rows": [],
+    "filter_by_net_name": true,
+    "filter_by_netclass": true,
+    "filter_text": "",
+    "group_by_constraint": false,
+    "group_by_netclass": false,
+    "show_time_domain_details": false,
+    "show_unconnected_nets": false,
+    "show_zero_pad_nets": false,
+    "sort_ascending": true,
+    "sorting_column": -1
+  },
+  "open_jobsets": [],
+  "project": {
+    "files": []
+  },
+  "schematic": {
+    "hierarchy_collapsed": [],
+    "selection_filter": {
+      "graphics": true,
+      "images": true,
+      "labels": true,
+      "lockedItems": false,
+      "otherItems": true,
+      "pins": true,
+      "ruleAreas": true,
+      "symbols": true,
+      "text": true,
+      "wires": true
+    }
+  }
+}

USB_PD_ESP32S3.kicad_pro

@@ -0,0 +1,323 @@
+{
+  "board": {
+    "3dviewports": [],
+    "design_settings": {
+      "defaults": {
+        "apply_defaults_to_fp_barcodes": false,
+        "apply_defaults_to_fp_dimensions": false,
+        "apply_defaults_to_fp_fields": false,
+        "apply_defaults_to_fp_shapes": false,
+        "apply_defaults_to_fp_text": false,
+        "board_outline_line_width": 0.05,
+        "copper_line_width": 0.2,
+        "copper_text_italic": false,
+        "copper_text_size_h": 1.5,
+        "copper_text_size_v": 1.5,
+        "copper_text_thickness": 0.3,
+        "copper_text_upright": false,
+        "courtyard_line_width": 0.05,
+        "dimension_precision": 4,
+        "dimension_units": 3,
+        "dimensions": {
+          "arrow_length": 1270000,
+          "extension_offset": 500000,
+          "keep_text_aligned": true,
+          "suppress_zeroes": true,
+          "text_position": 0,
+          "units_format": 0
+        },
+        "fab_line_width": 0.1,
+        "fab_text_italic": false,
+        "fab_text_size_h": 1.0,
+        "fab_text_size_v": 1.0,
+        "fab_text_thickness": 0.15,
+        "fab_text_upright": false,
+        "other_line_width": 0.1,
+        "other_text_italic": false,
+        "other_text_size_h": 1.0,
+        "other_text_size_v": 1.0,
+        "other_text_thickness": 0.15,
+        "other_text_upright": false,
+        "pads": {
+          "drill": 0.8,
+          "height": 1.27,
+          "width": 2.54
+        },
+        "silk_line_width": 0.1,
+        "silk_text_italic": false,
+        "silk_text_size_h": 1.0,
+        "silk_text_size_v": 1.0,
+        "silk_text_thickness": 0.1,
+        "silk_text_upright": false,
+        "zones": {
+          "border_display_style": 2,
+          "border_hatch_pitch": 0.5,
+          "corner_radius": 0.0,
+          "corner_smoothing": 0,
+          "fill_mode": 0,
+          "hatch_gap": 1.5,
+          "hatch_orientation": 0.0,
+          "hatch_smoothing_level": 0,
+          "hatch_smoothing_value": 0.1,
+          "hatch_thickness": 1.0,
+          "min_clearance": 0.5,
+          "min_island_area": 10.0,
+          "min_thickness": 0.25,
+          "pad_connection": 1,
+          "remove_islands": 0,
+          "thermal_relief_gap": 0.5,
+          "thermal_relief_spoke_width": 0.5
+        }
+      },
+      "diff_pair_dimensions": [],
+      "drc_exclusions": [],
+      "meta": {
+        "version": 2
+      },
+      "rule_severities": {
+        "annular_width": "error",
+        "clearance": "error",
+        "connection_width": "warning",
+        "copper_edge_clearance": "error",
+        "copper_sliver": "warning",
+        "courtyards_overlap": "error",
+        "creepage": "error",
+        "diff_pair_gap_out_of_range": "error",
+        "diff_pair_uncoupled_length_too_long": "error",
+        "drill_out_of_range": "error",
+        "duplicate_footprints": "warning",
+        "extra_footprint": "warning",
+        "footprint": "error",
+        "footprint_filters_mismatch": "ignore",
+        "footprint_symbol_field_mismatch": "warning",
+        "footprint_symbol_mismatch": "warning",
+        "footprint_type_mismatch": "ignore",
+        "hole_clearance": "error",
+        "hole_to_hole": "warning",
+        "holes_co_located": "warning",
+        "invalid_outline": "error",
+        "isolated_copper": "warning",
+        "item_on_disabled_layer": "error",
+        "items_not_allowed": "error",
+        "length_out_of_range": "error",
+        "lib_footprint_issues": "warning",
+        "lib_footprint_mismatch": "warning",
+        "malformed_courtyard": "error",
+        "microvia_drill_out_of_range": "error",
+        "mirrored_text_on_front_layer": "warning",
+        "missing_courtyard": "ignore",
+        "missing_footprint": "warning",
+        "missing_tuning_profile": "warning",
+        "net_conflict": "warning",
+        "nonmirrored_text_on_back_layer": "warning",
+        "npth_inside_courtyard": "error",
+        "padstack": "warning",
+        "pth_inside_courtyard": "error",
+        "shorting_items": "error",
+        "silk_edge_clearance": "warning",
+        "silk_over_copper": "warning",
+        "silk_overlap": "warning",
+        "skew_out_of_range": "error",
+        "solder_mask_bridge": "error",
+        "starved_thermal": "error",
+        "text_height": "warning",
+        "text_on_edge_cuts": "error",
+        "text_thickness": "warning",
+        "through_hole_pad_without_hole": "error",
+        "too_many_vias": "error",
+        "track_angle": "error",
+        "track_dangling": "warning",
+        "track_not_centered_on_via": "ignore",
+        "track_on_post_machined_layer": "error",
+        "track_segment_length": "error",
+        "track_width": "error",
+        "tracks_crossing": "error",
+        "tuning_profile_track_geometries": "ignore",
+        "unconnected_items": "error",
+        "unresolved_variable": "error",
+        "via_dangling": "warning",
+        "zones_intersect": "error"
+      },
+      "rules": {
+        "max_error": 0.005,
+        "min_clearance": 0.0,
+        "min_connection": 0.0,
+        "min_copper_edge_clearance": 0.5,
+        "min_groove_width": 0.0,
+        "min_hole_clearance": 0.25,
+        "min_hole_to_hole": 0.25,
+        "min_microvia_diameter": 0.2,
+        "min_microvia_drill": 0.1,
+        "min_resolved_spokes": 2,
+        "min_silk_clearance": 0.0,
+        "min_text_height": 0.8,
+        "min_text_thickness": 0.08,
+        "min_through_hole_diameter": 0.3,
+        "min_track_width": 0.2,
+        "min_via_annular_width": 0.1,
+        "min_via_diameter": 0.5,
+        "solder_mask_to_copper_clearance": 0.0,
+        "use_height_for_length_calcs": true
+      },
+      "teardrop_options": [
+        {
+          "td_onpthpad": true,
+          "td_onroundshapesonly": false,
+          "td_onsmdpad": true,
+          "td_ontrackend": false,
+          "td_onvia": true
+        }
+      ],
+      "teardrop_parameters": [
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_on_pad_in_zone": false,
+          "td_target_name": "td_round_shape",
+          "td_width_to_size_filter_ratio": 0.9
+        },
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_on_pad_in_zone": false,
+          "td_target_name": "td_rect_shape",
+          "td_width_to_size_filter_ratio": 0.9
+        },
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_on_pad_in_zone": false,
+          "td_target_name": "td_track_end",
+          "td_width_to_size_filter_ratio": 0.9
+        }
+      ],
+      "track_widths": [],
+      "tuning_pattern_settings": {
+        "diff_pair_defaults": {
+          "corner_radius_percentage": 80,
+          "corner_style": 1,
+          "max_amplitude": 1.0,
+          "min_amplitude": 0.2,
+          "single_sided": false,
+          "spacing": 1.0
+        },
+        "diff_pair_skew_defaults": {
+          "corner_radius_percentage": 80,
+          "corner_style": 1,
+          "max_amplitude": 1.0,
+          "min_amplitude": 0.2,
+          "single_sided": false,
+          "spacing": 0.6
+        },
+        "single_track_defaults": {
+          "corner_radius_percentage": 80,
+          "corner_style": 1,
+          "max_amplitude": 1.0,
+          "min_amplitude": 0.2,
+          "single_sided": false,
+          "spacing": 0.6
+        }
+      },
+      "via_dimensions": [],
+      "zones_allow_external_fillets": false
+    },
+    "ipc2581": {
+      "bom_rev": "",
+      "dist": "",
+      "distpn": "",
+      "internal_id": "",
+      "mfg": "",
+      "mpn": "",
+      "sch_revision": ""
+    },
+    "layer_pairs": [],
+    "layer_presets": [],
+    "viewports": []
+  },
+  "boards": [],
+  "component_class_settings": {
+    "assignments": [],
+    "meta": {
+      "version": 0
+    },
+    "sheet_component_classes": {
+      "enabled": false
+    }
+  },
+  "cvpcb": {
+    "equivalence_files": []
+  },
+  "libraries": {
+    "pinned_footprint_libs": [],
+    "pinned_symbol_libs": []
+  },
+  "meta": {
+    "filename": "USB_PD_ESP32S3.kicad_pro",
+    "version": 3
+  },
+  "net_settings": {
+    "classes": [
+      {
+        "bus_width": 12,
+        "clearance": 0.2,
+        "diff_pair_gap": 0.25,
+        "diff_pair_via_gap": 0.25,
+        "diff_pair_width": 0.2,
+        "line_style": 0,
+        "microvia_diameter": 0.3,
+        "microvia_drill": 0.1,
+        "name": "Default",
+        "pcb_color": "rgba(0, 0, 0, 0.000)",
+        "priority": 2147483647,
+        "schematic_color": "rgba(0, 0, 0, 0.000)",
+        "track_width": 0.2,
+        "tuning_profile": "",
+        "via_diameter": 0.6,
+        "via_drill": 0.3,
+        "wire_width": 6
+      }
+    ],
+    "meta": {
+      "version": 5
+    },
+    "net_colors": null,
+    "netclass_assignments": null,
+    "netclass_patterns": []
+  },
+  "pcbnew": {
+    "last_paths": {
+      "idf": "",
+      "netlist": "",
+      "plot": "",
+      "specctra_dsn": "",
+      "vrml": ""
+    },
+    "page_layout_descr_file": ""
+  },
+  "schematic": {
+    "bus_aliases": {},
+    "legacy_lib_dir": "",
+    "legacy_lib_list": [],
+    "top_level_sheets": []
+  },
+  "sheets": [],
+  "text_variables": {},
+  "tuning_profiles": {
+    "meta": {
+      "version": 0
+    },
+    "tuning_profiles_impedance_geometric": []
+  }
+}

USB_PD_ESP32S3.kicad_sym

@@ -0,0 +1,160 @@
+(kicad_symbol_lib
+  (version 20241209)
+  (generator "kicad-mcp")
+  (generator_version "9.0")
+  (symbol "CH224K"
+    (exclude_from_sim no)
+    (in_bom yes)
+    (on_board yes)
+    (property "Reference" "U"
+      (at 2.54 0 0)
+      (effects
+        (font (size 1.27 1.27))
+      )
+    )
+    (property "Value" "CH224K"
+      (at 0 -2.54 0)
+      (effects
+        (font (size 1.27 1.27))
+      )
+    )
+    (property "Footprint" "Package_SO:SSOP-10-1EP_3.9x4.9mm_P1mm_EP2.1x3.3mm"
+      (at 0 -5.08 0)
+      (effects
+        (font (size 1.27 1.27))
+      )
+      (hide yes)
+    )
+    (property "Datasheet" "https://www.wch.cn/downloads/CH224DS1_PDF.html"
+      (at 0 -7.62 0)
+      (effects
+        (font (size 1.27 1.27))
+      )
+      (hide yes)
+    )
+    (property "Description" "100W USB Type-C PD3.0/2.0, BC1.2 Sink Controller, SSOP-10"
+      (at 0 -10.16 0)
+      (effects
+        (font (size 1.27 1.27))
+      )
+      (hide yes)
+    )
+    (property "ki_keywords" "USB-C PD Sink Controller WCH"
+      (at 0 0 0)
+      (effects
+        (font (size 1.27 1.27))
+      )
+      (hide yes)
+    )
+    (symbol "CH224K_0_1"
+      (rectangle
+        (start -3.81 -6.35)
+        (end 3.81 6.35)
+        (stroke (width 0.254) (type default))
+        (fill (type background))
+      )
+    )
+    (symbol "CH224K_1_1"
+      (pin open_collector line
+        (at -6.35 5.08 0)
+        (length 2.54)
+        (name "GATE"
+          (effects (font (size 1.27 1.27)))
+        )
+        (number "1"
+          (effects (font (size 1.27 1.27)))
+        )
+      )
+      (pin power_in line
+        (at -6.35 2.54 0)
+        (length 2.54)
+        (name "VDD"
+          (effects (font (size 1.27 1.27)))
+        )
+        (number "2"
+          (effects (font (size 1.27 1.27)))
+        )
+      )
+      (pin passive line
+        (at -6.35 0 0)
+        (length 2.54)
+        (name "CFG1"
+          (effects (font (size 1.27 1.27)))
+        )
+        (number "3"
+          (effects (font (size 1.27 1.27)))
+        )
+      )
+      (pin passive line
+        (at -6.35 -2.54 0)
+        (length 2.54)
+        (name "CFG2"
+          (effects (font (size 1.27 1.27)))
+        )
+        (number "4"
+          (effects (font (size 1.27 1.27)))
+        )
+      )
+      (pin power_in line
+        (at -6.35 -5.08 0)
+        (length 2.54)
+        (name "GND"
+          (effects (font (size 1.27 1.27)))
+        )
+        (number "5"
+          (effects (font (size 1.27 1.27)))
+        )
+      )
+      (pin bidirectional line
+        (at 6.35 -5.08 180)
+        (length 2.54)
+        (name "DP"
+          (effects (font (size 1.27 1.27)))
+        )
+        (number "6"
+          (effects (font (size 1.27 1.27)))
+        )
+      )
+      (pin bidirectional line
+        (at 6.35 -2.54 180)
+        (length 2.54)
+        (name "DM"
+          (effects (font (size 1.27 1.27)))
+        )
+        (number "7"
+          (effects (font (size 1.27 1.27)))
+        )
+      )
+      (pin bidirectional line
+        (at 6.35 0 180)
+        (length 2.54)
+        (name "CC1"
+          (effects (font (size 1.27 1.27)))
+        )
+        (number "8"
+          (effects (font (size 1.27 1.27)))
+        )
+      )
+      (pin bidirectional line
+        (at 6.35 2.54 180)
+        (length 2.54)
+        (name "CC2"
+          (effects (font (size 1.27 1.27)))
+        )
+        (number "9"
+          (effects (font (size 1.27 1.27)))
+        )
+      )
+      (pin passive line
+        (at 6.35 5.08 180)
+        (length 2.54)
+        (name "VBUS"
+          (effects (font (size 1.27 1.27)))
+        )
+        (number "10"
+          (effects (font (size 1.27 1.27)))
+        )
+      )
+    )
+  )
+)

sym-lib-table

@@ -0,0 +1,4 @@
+(sym_lib_table
+  (version 7)
+  (lib (name "USB_PD_ESP32S3")(type "KiCad")(uri "${KIPRJMOD}/USB_PD_ESP32S3.kicad_sym")(options "")(descr ""))
+)