Compare commits

..

4 Commits

6 changed files with 2102 additions and 15 deletions

1
.gitignore vendored
View File

@ -5,3 +5,4 @@ sym-lib-table
*backups *backups
*lck *lck
*production* *production*
*auto*save*

View File

@ -16,7 +16,7 @@ Dieses Dokument beschreibt das Design eines hocheffizienten, synchronen DC/DC-Ab
Die Berechnung der externen Komponenten basiert auf dem [Datenblatt des SY8120IABC](doc/SY8120I.pdf). Die Berechnung der externen Komponenten basiert auf dem [Datenblatt des SY8120IABC](doc/SY8120I.pdf).
![Schema SY8129I](./SY8129I_Schematics.svg) ![Schema SY8120I](SY8129I_Schematics.svg Schema der Schaltung zur Berechnung)
### a) Feedback-Widerstände (R1, R2) - Optimiert für "Basic Parts" ### a) Feedback-Widerstände (R1, R2) - Optimiert für "Basic Parts"

View File

@ -16,6 +16,8 @@ This document describes the design of a high-efficiency, synchronous DC/DC step-
The calculation of the external components is based on the datasheet of the SY8120IABC. The calculation of the external components is based on the datasheet of the SY8120IABC.
![Schema SY8120I](SY8129I_Schematics.svg Schematics for calculations)
### a) Feedback Resistors (R1, R2) - Optimized for "Basic Parts" ### a) Feedback Resistors (R1, R2) - Optimized for "Basic Parts"
To use common and cost-effective "Basic Parts" from JLCPCB, resistors from the E24 series are chosen. The goal is to match the required voltage ratio for approx. 3.3V as closely as possible. To use common and cost-effective "Basic Parts" from JLCPCB, resistors from the E24 series are chosen. The goal is to match the required voltage ratio for approx. 3.3V as closely as possible.

View File

@ -1,32 +1,635 @@
{ {
"board": { "board": {
"3dviewports": [],
"design_settings": { "design_settings": {
"defaults": {}, "defaults": {
"diff_pair_dimensions": [], "apply_defaults_to_fp_fields": false,
"drc_exclusions": [], "apply_defaults_to_fp_shapes": false,
"rules": {}, "apply_defaults_to_fp_text": false,
"track_widths": [], "board_outline_line_width": 0.05,
"via_dimensions": [] "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": {
"min_clearance": 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_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",
"net_conflict": "warning",
"nonmirrored_text_on_back_layer": "warning",
"npth_inside_courtyard": "ignore",
"padstack": "warning",
"pth_inside_courtyard": "ignore",
"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_thickness": "warning",
"through_hole_pad_without_hole": "error",
"too_many_vias": "error",
"track_angle": "error",
"track_dangling": "warning",
"track_segment_length": "error",
"track_width": "error",
"tracks_crossing": "error",
"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": 0.0,
"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": {
"dist": "",
"distpn": "",
"internal_id": "",
"mfg": "",
"mpn": ""
},
"layer_pairs": [],
"layer_presets": [],
"viewports": []
},
"boards": [], "boards": [],
"cvpcb": {
"equivalence_files": []
},
"erc": {
"erc_exclusions": [],
"meta": {
"version": 0
},
"pin_map": [
[
0,
0,
0,
0,
0,
0,
1,
0,
0,
0,
0,
2
],
[
0,
2,
0,
1,
0,
0,
1,
0,
2,
2,
2,
2
],
[
0,
0,
0,
0,
0,
0,
1,
0,
1,
0,
1,
2
],
[
0,
1,
0,
0,
0,
0,
1,
1,
2,
1,
1,
2
],
[
0,
0,
0,
0,
0,
0,
1,
0,
0,
0,
0,
2
],
[
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
2
],
[
1,
1,
1,
1,
1,
0,
1,
1,
1,
1,
1,
2
],
[
0,
0,
0,
1,
0,
0,
1,
0,
0,
0,
0,
2
],
[
0,
2,
1,
2,
0,
0,
1,
0,
2,
2,
2,
2
],
[
0,
2,
0,
1,
0,
0,
1,
0,
2,
0,
0,
2
],
[
0,
2,
1,
1,
0,
0,
1,
0,
2,
0,
0,
2
],
[
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2
]
],
"rule_severities": {
"bus_definition_conflict": "error",
"bus_entry_needed": "error",
"bus_to_bus_conflict": "error",
"bus_to_net_conflict": "error",
"different_unit_footprint": "error",
"different_unit_net": "error",
"duplicate_reference": "error",
"duplicate_sheet_names": "error",
"endpoint_off_grid": "warning",
"extra_units": "error",
"footprint_filter": "ignore",
"footprint_link_issues": "warning",
"four_way_junction": "ignore",
"global_label_dangling": "warning",
"hier_label_mismatch": "error",
"label_dangling": "error",
"label_multiple_wires": "warning",
"lib_symbol_issues": "warning",
"lib_symbol_mismatch": "warning",
"missing_bidi_pin": "warning",
"missing_input_pin": "warning",
"missing_power_pin": "error",
"missing_unit": "warning",
"multiple_net_names": "warning",
"net_not_bus_member": "warning",
"no_connect_connected": "warning",
"no_connect_dangling": "warning",
"pin_not_connected": "error",
"pin_not_driven": "error",
"pin_to_pin": "warning",
"power_pin_not_driven": "error",
"same_local_global_label": "warning",
"similar_label_and_power": "warning",
"similar_labels": "warning",
"similar_power": "warning",
"simulation_model_issue": "ignore",
"single_global_label": "ignore",
"unannotated": "error",
"unconnected_wire_endpoint": "warning",
"unit_value_mismatch": "error",
"unresolved_variable": "error",
"wire_dangling": "error"
}
},
"libraries": { "libraries": {
"pinned_footprint_libs": [], "pinned_footprint_libs": [],
"pinned_symbol_libs": [] "pinned_symbol_libs": []
}, },
"meta": { "meta": {
"filename": "kicad.kicad_pro", "filename": "SY8129IABC_3V3_Converter.kicad_pro",
"version": 1 "version": 3
}, },
"net_settings": { "net_settings": {
"classes": [], "classes": [
"meta": { {
"version": 0 "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,
"via_diameter": 0.6,
"via_drill": 0.3,
"wire_width": 6
} }
],
"meta": {
"version": 4
},
"net_colors": null,
"netclass_assignments": null,
"netclass_patterns": []
}, },
"pcbnew": { "pcbnew": {
"last_paths": {
"gencad": "",
"idf": "",
"netlist": "",
"plot": "",
"pos_files": "",
"specctra_dsn": "",
"step": "",
"svg": "",
"vrml": ""
},
"page_layout_descr_file": "" "page_layout_descr_file": ""
}, },
"sheets": [], "schematic": {
"annotate_start_num": 0,
"bom_export_filename": "${PROJECTNAME}.csv",
"bom_fmt_presets": [],
"bom_fmt_settings": {
"field_delimiter": ",",
"keep_line_breaks": false,
"keep_tabs": false,
"name": "CSV",
"ref_delimiter": ",",
"ref_range_delimiter": "",
"string_delimiter": "\""
},
"bom_presets": [],
"bom_settings": {
"exclude_dnp": false,
"fields_ordered": [
{
"group_by": false,
"label": "Reference",
"name": "Reference",
"show": true
},
{
"group_by": false,
"label": "Qty",
"name": "${QUANTITY}",
"show": true
},
{
"group_by": true,
"label": "Value",
"name": "Value",
"show": true
},
{
"group_by": true,
"label": "DNP",
"name": "${DNP}",
"show": true
},
{
"group_by": true,
"label": "Exclude from BOM",
"name": "${EXCLUDE_FROM_BOM}",
"show": true
},
{
"group_by": true,
"label": "Exclude from Board",
"name": "${EXCLUDE_FROM_BOARD}",
"show": true
},
{
"group_by": true,
"label": "Footprint",
"name": "Footprint",
"show": true
},
{
"group_by": false,
"label": "Datasheet",
"name": "Datasheet",
"show": true
},
{
"group_by": false,
"label": "Beschreibung",
"name": "Description",
"show": false
},
{
"group_by": false,
"label": "#",
"name": "${ITEM_NUMBER}",
"show": false
},
{
"group_by": false,
"label": "LCSC PN",
"name": "LCSC PN",
"show": false
}
],
"filter_string": "",
"group_symbols": true,
"include_excluded_from_bom": true,
"name": "",
"sort_asc": true,
"sort_field": "Reference"
},
"connection_grid_size": 50.0,
"drawing": {
"dashed_lines_dash_length_ratio": 12.0,
"dashed_lines_gap_length_ratio": 3.0,
"default_line_thickness": 6.0,
"default_text_size": 50.0,
"field_names": [],
"intersheets_ref_own_page": false,
"intersheets_ref_prefix": "",
"intersheets_ref_short": false,
"intersheets_ref_show": false,
"intersheets_ref_suffix": "",
"junction_size_choice": 3,
"label_size_ratio": 0.375,
"operating_point_overlay_i_precision": 3,
"operating_point_overlay_i_range": "~A",
"operating_point_overlay_v_precision": 3,
"operating_point_overlay_v_range": "~V",
"overbar_offset_ratio": 1.23,
"pin_symbol_size": 25.0,
"text_offset_ratio": 0.15
},
"legacy_lib_dir": "",
"legacy_lib_list": [],
"meta": {
"version": 1
},
"net_format_name": "",
"page_layout_descr_file": "",
"plot_directory": "",
"space_save_all_events": true,
"spice_current_sheet_as_root": false,
"spice_external_command": "spice \"%I\"",
"spice_model_current_sheet_as_root": true,
"spice_save_all_currents": false,
"spice_save_all_dissipations": false,
"spice_save_all_voltages": false,
"subpart_first_id": 65,
"subpart_id_separator": 0
},
"sheets": [
[
"e546dd70-2b44-428d-8659-fc811a26da5f",
"Root"
]
],
"text_variables": {} "text_variables": {}
} }

File diff suppressed because it is too large Load Diff

View File

@ -0,0 +1,197 @@
(kicad_symbol_lib
(version 20241209)
(generator "kicad_symbol_editor")
(generator_version "9.0")
(symbol "SY8120IABC"
(exclude_from_sim no)
(in_bom yes)
(on_board yes)
(property "Reference" "U"
(at -5.08 11.43 0)
(effects
(font
(size 1.27 1.27)
)
(justify left)
)
)
(property "Value" "SY8120IABC"
(at -5.08 8.89 0)
(effects
(font
(size 1.27 1.27)
)
(justify left)
)
)
(property "Footprint" "Package_TO_SOT_SMD:SOT-23-6"
(at -1.27 -32.004 0)
(effects
(font
(size 1.27 1.27)
)
(hide yes)
)
)
(property "Datasheet" "https://www.silergy.com/products/detail/260/SY8120"
(at 5.842 -28.448 0)
(effects
(font
(size 1.27 1.27)
)
(hide yes)
)
)
(property "Description" "18V, 2A, 1MHz Synchronous Step-Down Converter"
(at 4.572 -25.146 0)
(effects
(font
(size 1.27 1.27)
)
(hide yes)
)
)
(property "ki_keywords" "buck dc-dc step-down converter synchronous"
(at 0 0 0)
(effects
(font
(size 1.27 1.27)
)
(hide yes)
)
)
(property "ki_fp_filters" "SOT?23*"
(at 0 0 0)
(effects
(font
(size 1.27 1.27)
)
(hide yes)
)
)
(symbol "SY8120IABC_0_1"
(rectangle
(start -5.08 7.62)
(end 5.08 -7.62)
(stroke
(width 0.254)
(type default)
)
(fill
(type background)
)
)
(pin power_in line
(at 0 -10.16 90)
(length 2.54)
(name "GND"
(effects
(font
(size 1.27 1.27)
)
)
)
(number "2"
(effects
(font
(size 1.27 1.27)
)
)
)
)
(pin passive line
(at 7.62 5.08 180)
(length 2.54)
(name "BOOT"
(effects
(font
(size 1.27 1.27)
)
)
)
(number "1"
(effects
(font
(size 1.27 1.27)
)
)
)
)
)
(symbol "SY8120IABC_1_1"
(pin power_in line
(at -7.62 5.08 0)
(length 2.54)
(name "IN"
(effects
(font
(size 1.27 1.27)
)
)
)
(number "5"
(effects
(font
(size 1.27 1.27)
)
)
)
)
(pin input line
(at -7.62 2.54 0)
(length 2.54)
(name "EN"
(effects
(font
(size 1.27 1.27)
)
)
)
(number "4"
(effects
(font
(size 1.27 1.27)
)
)
)
)
(pin power_out line
(at 7.62 0 180)
(length 2.54)
(name "SW"
(effects
(font
(size 1.27 1.27)
)
)
)
(number "6"
(effects
(font
(size 1.27 1.27)
)
)
)
)
(pin input line
(at 7.62 -2.54 180)
(length 2.54)
(name "FB"
(effects
(font
(size 1.27 1.27)
)
)
)
(number "3"
(effects
(font
(size 1.27 1.27)
)
)
)
)
)
(embedded_fonts no)
)
)