picked new inductor, buils

elec/footprints/footprints.kicad_sym

@@ -1075,4 +1075,85 @@
       )
     )
   )
+  (symbol "CDRH104RT125NP-680MC"
+    (in_bom yes)
+    (on_board yes)
+    (property
+      "Reference"
+      "L"
+      (id 0)
+      (at 0 5.08 0)
+      (effects (font (size 1.27 1.27) ) )
+    )
+    (property
+      "Value"
+      "CDRH104RT125NP-680MC"
+      (id 1)
+      (at 0 -5.08 0)
+      (effects (font (size 1.27 1.27) ) )
+    )
+    (property
+      "Footprint"
+      "footprints:IND-SMD_L10.2-W10.0"
+      (id 2)
+      (at 0 -7.62 0)
+      (effects (font (size 1.27 1.27) ) hide)
+    )
+    (property
+      "Datasheet"
+      "https://lcsc.com/product-detail/Power-Inductors_68uH-20_C167254.html"
+      (id 3)
+      (at 0 -10.16 0)
+      (effects (font (size 1.27 1.27) ) hide)
+    )
+    (property
+      "LCSC Part"
+      "C167254"
+      (id 5)
+      (at 0 -12.70 0)
+      (effects (font (size 1.27 1.27) ) hide)
+    )
+    (symbol "CDRH104RT125NP-680MC_0_1"
+      (arc
+        (start -4.29 -0.02)
+        (mid -2.81 -1.01)
+        (end -2.27 -0.02)
+        (stroke (width 0) (type default) (color 0 0 0 0))
+        (fill (type none))
+      )
+      (arc
+        (start -2.13 -0.02)
+        (mid -0.66 -1.01)
+        (end -0.11 -0.02)
+        (stroke (width 0) (type default) (color 0 0 0 0))
+        (fill (type none))
+      )
+      (arc
+        (start 0.02 -0.02)
+        (mid 1.49 -1.01)
+        (end 2.04 -0.02)
+        (stroke (width 0) (type default) (color 0 0 0 0))
+        (fill (type none))
+      )
+      (arc
+        (start 2.21 -0.02)
+        (mid 3.68 -1.01)
+        (end 4.23 -0.02)
+        (stroke (width 0) (type default) (color 0 0 0 0))
+        (fill (type none))
+      )
+      (pin unspecified line
+        (at 5.08 -0.00 180)
+        (length 0.762)
+        (name "2" (effects (font (size 1.27 1.27))))
+        (number "2" (effects (font (size 1.27 1.27))))
+      )
+      (pin unspecified line
+        (at -5.08 -0.00 0)
+        (length 0.762)
+        (name "1" (effects (font (size 1.27 1.27))))
+        (number "1" (effects (font (size 1.27 1.27))))
+      )
+    )
+  )
 )

elec/footprints/footprints.pretty/IND-SMD_L10.2-W10.0.kicad_mod

@@ -0,0 +1,26 @@
+(module easyeda2kicad:IND-SMD_L10.2-W10.0 (layer F.Cu) (tedit 5DC5F6A4)
+	(attr smd)
+	(fp_text reference REF** (at 0 -4.0) (layer F.SilkS)
+		(effects (font (size 1 1) (thickness 0.15)))
+	)
+	(fp_text value IND-SMD_L10.2-W10.0 (at 0 4.0) (layer F.Fab)
+		(effects (font (size 1 1) (thickness 0.15)))
+	)
+	(fp_text user %R (at 0 0) (layer F.Fab)
+		(effects (font (size 1 1) (thickness 0.15)))
+	)
+	(fp_line (start -5.18 -1.81) (end -5.18 -5.08) (layer F.SilkS) (width 0.15))
+	(fp_line (start -5.18 -5.08) (end 5.18 -5.08) (layer F.SilkS) (width 0.15))
+	(fp_line (start 5.18 -5.08) (end 5.18 -1.81) (layer F.SilkS) (width 0.15))
+	(fp_line (start -5.18 1.81) (end -5.18 5.08) (layer F.SilkS) (width 0.15))
+	(fp_line (start -5.18 5.08) (end 5.18 5.08) (layer F.SilkS) (width 0.15))
+	(fp_line (start 5.18 5.08) (end 5.18 1.81) (layer F.SilkS) (width 0.15))
+	(pad 1 smd rect (at 4.88 0.00 0.00) (size 2.12 3.32) (layers F.Cu F.Paste F.Mask))
+	(pad 2 smd rect (at -4.88 0.00 0.00) (size 2.12 3.32) (layers F.Cu F.Paste F.Mask))
+	(fp_circle (center -5.10 5.00) (end -5.07 5.00) (layer F.Fab) (width 0.06))
+	(model "{build_dir}/IND-SMD_L10.2-W10.0-H3.8.step"
+		(offset (xyz 0.000 -0.000 -0.000))
+		(scale (xyz 1 1 1))
+		(rotate (xyz 0 0 270))
+	)
+)

elec/src/LM5164_regulator.ato

@@ -85,8 +85,8 @@ module LM5164Buck from AdjustableRegulator:
     r_switching_frequency = new Resistor  # Rt in the datasheet
     ic.RON ~ r_switching_frequency.p1; r_switching_frequency.p2 ~ ic.GND
     # Use an assertion here rather than an assignment in case we replace the resistor elsewhere
-    assert r_switching_frequency.value within (v_out * 2500) / (switching_frequency / 1kHz) * 1kΩ
-    assert (r_switching_frequency.value / 1kΩ) / (v_in * 2.5) * 1us > 50ns
+    assert r_switching_frequency.value within (v_out/1V * 2500) / (switching_frequency / 1kHz) * 1kΩ
+    assert (r_switching_frequency.value / 1kΩ) / (v_in/1V * 2.5) * 1us > 50ns
     r_switching_frequency.footprint = "R0402"
 
     # 6.3.9 Optional: Enable / UVLO
@@ -101,7 +101,7 @@ module LM5164Buck from AdjustableRegulator:
 
     k_ind = inductor_ripple_current / max(output_current)
 
-    assert k_ind <= 0.4  # The datasheet says min 0.2, but I believe they mean that's a reasonable minimum for component selection
+    assert k_ind <= 0.5  # For most applications, choose an inductance such that the inductor ripple current, ΔIL, is between 30% and 50% of the rated load current at nominal input voltage. 
 
     l_min = (max(v_in) - v_out) / (max(output_current) * max(k_ind)) * v_out / (max(v_in) * switching_frequency)  # Min inductor value
     assert inductor.value >= l_min  #Make sure the inductor is large enough to keep our ripple current in check
@@ -171,21 +171,22 @@ module Reg10V_1 from LM5164Buck:
     c_out.esr = 40mΩ
 
 
-from "power_parts.ato" import CDRH127_LDNP_270MC, ECE2CM220F16OTPO, NM1206B104K251CEGN, TCC1206X7R226K100HT
+from "power_parts.ato" import CDRH104RT125NP_680MC, ECE2CM220F16OTPO, NM1206B104K251CEGN, TCC1206X7R226K100HT
 
 ###################################################
 # Example usage: Stage 2
 # Select specific components once you've found their specs
 ###################################################
 
-module Reg10V from LMR16030Buck:
+module Reg10V from LM5164Buck:
+    v_in = 48V to 68V
     v_out = 10V +/- 6%
-    switching_frequency = 650kHz +/- 5%
+    switching_frequency = 400kHz +/- 5%
     output_ripple = 120mV
 
     # inductor.rated_current = 4A
     # inductor.value = 22 to 32uH
-    inductor -> CDRH127_LDNP_270MC
+    inductor -> CDRH104RT125NP_680MC
 
     # c_in_bulk.value = 10uF to 22uF
     # c_in_bulk.voltage = 120V
@@ -204,7 +205,7 @@ module Reg10V from LMR16030Buck:
 from "xt-connectors/xt-connectors.ato" import XT30_Female_Right_Angle, XT30_Male_Right_Angle
 from "generics/leds.ato" import LEDIndicatorRed
 
-module LMR16030BuckDemo:
+module LM5164BuckDemo:
     """
     This is a demo board of the Reg10V module
     """

elec/src/power_parts.ato

@@ -122,6 +122,14 @@ component CDRH127_LDNP_270MC from Inductor:
     value = 27uH +/- 20%
     rated_current = 4.2A
 
+component CDRH104RT125NP_680MC from Inductor:
+    footprint = "IND-SMD_L10.2-W10.0"
+    lcsc_id = "C167254"
+    mpn = "C167254"
+
+    value = 68uH +/- 20%
+    rated_current = 1.25A
+
 
 component SS510_C908682 from SchottkyDiode:
     # component SS510_C908682