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b875cd2c72
| Author | SHA1 | Date |
|---|---|---|
 Eduard Iten
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b875cd2c72 | |
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Eduard Iten
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aacea7f097 | |
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Eduard Iten
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4ee3722519 | |
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Eduard Iten
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a44f07ef75 |
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@ -5,3 +5,4 @@ sym-lib-table
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*backups
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*lck
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*production*
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*auto*save*
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@ -16,7 +16,7 @@ Dieses Dokument beschreibt das Design eines hocheffizienten, synchronen DC/DC-Ab
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Die Berechnung der externen Komponenten basiert auf dem [Datenblatt des SY8120IABC](doc/SY8120I.pdf).
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### a) Feedback-Widerstände (R1, R2) - Optimiert für "Basic Parts"
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@ -16,6 +16,8 @@ This document describes the design of a high-efficiency, synchronous DC/DC step-
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The calculation of the external components is based on the datasheet of the SY8120IABC.
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### a) Feedback Resistors (R1, R2) - Optimized for "Basic Parts"
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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.
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@ -1,32 +1,635 @@
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{
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||||
"board": {
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||||
"3dviewports": [],
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"design_settings": {
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||||
"defaults": {},
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||||
"defaults": {
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||||
"apply_defaults_to_fp_fields": false,
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||||
"apply_defaults_to_fp_shapes": false,
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||||
"apply_defaults_to_fp_text": false,
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||||
"board_outline_line_width": 0.05,
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"copper_line_width": 0.2,
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||||
"copper_text_italic": false,
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||||
"copper_text_size_h": 1.5,
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||||
"copper_text_size_v": 1.5,
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||||
"copper_text_thickness": 0.3,
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"copper_text_upright": false,
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||||
"courtyard_line_width": 0.05,
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"dimension_precision": 4,
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"dimension_units": 3,
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"dimensions": {
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"arrow_length": 1270000,
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"extension_offset": 500000,
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"keep_text_aligned": true,
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"suppress_zeroes": true,
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"text_position": 0,
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||||
"units_format": 0
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},
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"fab_line_width": 0.1,
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"fab_text_italic": false,
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"fab_text_size_h": 1.0,
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"fab_text_size_v": 1.0,
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"fab_text_thickness": 0.15,
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"fab_text_upright": false,
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"other_line_width": 0.1,
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"other_text_italic": false,
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"other_text_size_h": 1.0,
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"other_text_size_v": 1.0,
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"other_text_thickness": 0.15,
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"other_text_upright": false,
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"pads": {
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"drill": 0.8,
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"height": 1.27,
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"width": 2.54
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},
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"silk_line_width": 0.1,
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"silk_text_italic": false,
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"silk_text_size_h": 1.0,
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"silk_text_size_v": 1.0,
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"silk_text_thickness": 0.1,
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"silk_text_upright": false,
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||||
"zones": {
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"min_clearance": 0.5
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}
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||||
},
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||||
"diff_pair_dimensions": [],
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||||
"drc_exclusions": [],
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||||
"rules": {},
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||||
"meta": {
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||||
"version": 2
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||||
},
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||||
"rule_severities": {
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||||
"annular_width": "error",
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||||
"clearance": "error",
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"connection_width": "warning",
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"copper_edge_clearance": "error",
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"copper_sliver": "warning",
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||||
"courtyards_overlap": "error",
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"creepage": "error",
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"diff_pair_gap_out_of_range": "error",
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"diff_pair_uncoupled_length_too_long": "error",
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"drill_out_of_range": "error",
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"duplicate_footprints": "warning",
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"extra_footprint": "warning",
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||||
"footprint": "error",
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||||
"footprint_filters_mismatch": "ignore",
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||||
"footprint_symbol_mismatch": "warning",
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||||
"footprint_type_mismatch": "ignore",
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||||
"hole_clearance": "error",
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||||
"hole_to_hole": "warning",
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||||
"holes_co_located": "warning",
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||||
"invalid_outline": "error",
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||||
"isolated_copper": "warning",
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||||
"item_on_disabled_layer": "error",
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||||
"items_not_allowed": "error",
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||||
"length_out_of_range": "error",
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||||
"lib_footprint_issues": "warning",
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||||
"lib_footprint_mismatch": "warning",
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||||
"malformed_courtyard": "error",
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||||
"microvia_drill_out_of_range": "error",
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||||
"mirrored_text_on_front_layer": "warning",
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||||
"missing_courtyard": "ignore",
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||||
"missing_footprint": "warning",
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||||
"net_conflict": "warning",
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||||
"nonmirrored_text_on_back_layer": "warning",
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"npth_inside_courtyard": "ignore",
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||||
"padstack": "warning",
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||||
"pth_inside_courtyard": "ignore",
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"shorting_items": "error",
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"silk_edge_clearance": "warning",
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"silk_over_copper": "warning",
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"silk_overlap": "warning",
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"skew_out_of_range": "error",
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||||
"solder_mask_bridge": "error",
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||||
"starved_thermal": "error",
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"text_height": "warning",
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"text_thickness": "warning",
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||||
"through_hole_pad_without_hole": "error",
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"too_many_vias": "error",
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||||
"track_angle": "error",
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||||
"track_dangling": "warning",
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||||
"track_segment_length": "error",
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||||
"track_width": "error",
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||||
"tracks_crossing": "error",
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||||
"unconnected_items": "error",
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||||
"unresolved_variable": "error",
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||||
"via_dangling": "warning",
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||||
"zones_intersect": "error"
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||||
},
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"rules": {
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||||
"max_error": 0.005,
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||||
"min_clearance": 0.0,
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||||
"min_connection": 0.0,
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||||
"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,
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||||
"min_microvia_drill": 0.1,
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||||
"min_resolved_spokes": 2,
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||||
"min_silk_clearance": 0.0,
|
||||
"min_text_height": 0.8,
|
||||
"min_text_thickness": 0.08,
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||||
"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
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||||
},
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||||
"teardrop_options": [
|
||||
{
|
||||
"td_onpthpad": true,
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||||
"td_onroundshapesonly": false,
|
||||
"td_onsmdpad": true,
|
||||
"td_ontrackend": false,
|
||||
"td_onvia": true
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||||
}
|
||||
],
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||||
"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
|
||||
},
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||||
{
|
||||
"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
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||||
}
|
||||
],
|
||||
"track_widths": [],
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||||
"via_dimensions": []
|
||||
}
|
||||
"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": [],
|
||||
"cvpcb": {
|
||||
"equivalence_files": []
|
||||
},
|
||||
"erc": {
|
||||
"erc_exclusions": [],
|
||||
"meta": {
|
||||
"version": 0
|
||||
},
|
||||
"pin_map": [
|
||||
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|
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|
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|
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|
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|
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|
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|
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]
|
||||
],
|
||||
"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": {
|
||||
"pinned_footprint_libs": [],
|
||||
"pinned_symbol_libs": []
|
||||
},
|
||||
"meta": {
|
||||
"filename": "kicad.kicad_pro",
|
||||
"version": 1
|
||||
"filename": "SY8129IABC_3V3_Converter.kicad_pro",
|
||||
"version": 3
|
||||
},
|
||||
"net_settings": {
|
||||
"classes": [],
|
||||
"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,
|
||||
"via_diameter": 0.6,
|
||||
"via_drill": 0.3,
|
||||
"wire_width": 6
|
||||
}
|
||||
],
|
||||
"meta": {
|
||||
"version": 0
|
||||
}
|
||||
"version": 4
|
||||
},
|
||||
"net_colors": null,
|
||||
"netclass_assignments": null,
|
||||
"netclass_patterns": []
|
||||
},
|
||||
"pcbnew": {
|
||||
"last_paths": {
|
||||
"gencad": "",
|
||||
"idf": "",
|
||||
"netlist": "",
|
||||
"plot": "",
|
||||
"pos_files": "",
|
||||
"specctra_dsn": "",
|
||||
"step": "",
|
||||
"svg": "",
|
||||
"vrml": ""
|
||||
},
|
||||
"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": {}
|
||||
}
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -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)
|
||||
)
|
||||
)
|
||||
Loading…
Reference in New Issue