Coffee Machine Motherboards

Viewing a coffee machine motherboard block diagram makes it look like brewing great coffee is, in fact, rocket science. The printed circuit boards have evolved into interconnected integrated circuits that include microcontrollers, solid state relays, and resettable PPTC devices for overcurrent protection. Littelfuse makes all those components, as well as TVS diodes for overvoltage protection.

Block Diagram

Technology:
Product Series:
Features:Third-party compliance with UL/IEC; low internal resistance; shock-safe; vibration-resistant
Benefits:Reduces customer qualification time by complying with third-party safety standards such as UL/IEC

Technology:
Product Series:
Features:Low Rds(on); dv/dt ruggedness
Benefits:Offers fast response time and lower heat signature

Technology:
Product Series:LVR
Features:Line voltage ratings of 120 VAC and 240 VAC; low resistance; holds current up to 2 A; compact size
Benefits:Fast time to trip; offers board space saving; reduces customer quality time by complying with UL/IEC

Technology:
Product Series:QJxx16xHx
Features:High voltage withstand capability (1 kA), high surge capability up to 200 A; mechanically and thermally robust TO-220
Benefits:Solid-state (non-mechanical) switching and no audible noise during operation; enables power efficient, compact design

Technology:
Product Series:H6246
Features:Wide range of requirements for customer-specific applications; various precision levels available
Benefits:Customized probes and assemblies to meet individual customer requirements

Technology:
Product Series:
Features:Ultra-low IQ: 7 nA Typ @ 5.5 VIN; low RON = 31 m Typ @ 5.5 VIN
Benefits:Slew rate control, integrated output discharge switch, and internal EN pull-down resistor

Technology:
Product Series:SMF, SMF4L
Features:400 W peak pulse power capability; fast response time (<1 nS); low inductance
Benefits:Improves system reliability by protecting downstream components from transients on power lines

Technology:
Product Series:54140
Features:IP67 rated; 17 Gauss sensitivity
Benefits:Ultra-low power consumption at 1.5 uA ; longevity of up to 20 billion operations