DC537A

DC537A demonstration circuit is designed to evaluate the performance of the LTC4230 Triple Hot Swap Controller with multifunction current control. The board demonstrates all possible operation modes: power-up and power-down, when power rails turn on or turn off, steady state with constant load and overload conditions. The board contains one LTC4230 Controller, three power channels, three resistive feedback signal dividers, an ON pin circuit, and a circuit for configuration of the FAULT pin function. Each power channel includes a series connected power MOSFET and sense resistor. The LTC4230 is a triple hot swap controller that controls three supply voltages from 1.7V to 16.5V with VCC1 VCC2 VCC3. Available in a 20 lead SSOP package, the LTC4230 is showcased on demonstration circuit DC537A configured for 1.7 to 16.5V operation with a slow comparator current limit protection in the range of 5.71A - 8.57A and a fast comparator – in the range of 19.3A - 23.6A.

• Under voltage lockout
• Programmable over voltage protection and programmable soft start with inrush current limiting
• Dual level over current fault protection
• Programmable over current response time
• Automatic retry or latched mode operation
• User-programmable supply voltage power-up rate
• Output voltages VOUTn monitoring and RESETn signaling
• Spurious RESETn signal elimination by the glitch filter