Power Converters

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Calculations

Fraction Power Loss

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle V_\text{IN}} Voltage on input (Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle V_\text{IN} < BV_\text{DS}} ), and Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle I_\text{switch}} Switching current,

  • Max switching power: Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle P_\text{total} = \frac{1}{2} I_\text{switch}V_\text{IN}}
  • Due to Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle R_\text{DSON}} loss: Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle P_{\text{loss}R_\text{DSON}} = R_\text{DSON}I_\text{switch}^2}
  • Due to capacitance switching Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle C_\text{DS}} loss: Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle C_\text{DS}V_\text{IN}^2 f_\text{switch}}
  • Due to switch off time Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t_f} (overestimation): Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t_f f_\text{switch} I_\text{switch} V_\text{IN} }

Total loss:

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle P_\text{loss total}/P_\text{total} = 2 R_{\text{DSON}}\frac{I_\text{switch}}{V_\text{IN}} + C_\text{DS} f_\text{switch} \frac{V_\text{IN}}{I_\text{switch}} + t_f f_\text{switch} }

Main MOSFETs

List of high-voltage&low RD_ON (mostly slow) FETs

P channel

N Channnel

Drive of main mosfets

Comparators

MOSFETs

Other Components

Inductive Heating Power Transfer

Coils

Indactance calculator, or simpler, this one gives different/wrong? results

  • primary coil: length=110mm, diameter=11mm, N=100 => 9.7 uH,
    • resistance: 100*3.14*10e-3/(3.14*.5e-3**2)*16.9e-9 = 68 mOhm
  • secondary coil: length=100mm, diameter=10mm, 1mm thick brass:
    • inductance=8.0 uH/100^2=0.80nH (8.0uH is inductance for 10mm diameter coil)
    • resistance: 65e-9 [Ohm m] * 3.14*5e-3 / (1e-3*100e-3) = 20 u Ohm
    • L/R fall-off time: 0.8e-9/20e-6 = 40 us.
    • resistance 'seen' on primary coil: 20e-6*100**2 = 0.2 Ohm.
  • secondary coil, stainless steel ([resistivity = 690 nOhm m, chemistry.about.com)
    • resistance: 690e-9 * 3.14*10e-3 / (1e-3*110e-3) = 196 u Ohm
    • L/R fall off time: 0.8e-9/ 217 u Ohm = 4.06 us
    • resistance 'seen' on primary coil: 196 *100**2 = 1.96 Ohm, so with 200 primary turns, will be 7.9 Ohm.
Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle L = \mu_0 \frac{N^2A}{l}.}

Misc

Lattice

If I want:

  • PLL
  • manually solderable (>= 0.5 mm pitch pins)
  • differential input/outputs

Then it looks like the first option is ICE40HX4K-TQ144, handbook, iCE40 LP/HX Family Datasheet

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