
Summit Microelectronics
INTRODUCTION
The SMS66 is a very accurate programmable power supply supervisor that monitors and sequences. It controls sequencing time and position of up to six isolated or non-isolated distributed or POL DC/DC converters. The monitor supervisory function has two independent UV and OV settings for each supply and can be set in 5mV steps. The SMS66 also sequences the power supplies in any order using enable outputs with programmable polarity.
FEATURES & APPLICATIONS
• Very accurate monitor function – 5mV steps
• Monitors and sequences up to six supplies
• Programmable Power-on/-off sequencing
• Monitors internal temperature sensor
• Operates from 12V or 3.3V supply
• Monitors 12V input and VDD
• Monitors two general-purpose 10-bit ADC inputs
• Programmable threshold limits (2 OV/2 UV) for
each monitored input
• Programmable RESET, HEALTHY and FAULT
functions
• 4k-bit general purpose nonvolatile memory
• I2C 2-wire serial bus for programming
configuration and monitoring status, including
10-bit ADC conversion results
APPLICATIONs
• Monitor and Sequence Distributed Power and
Point of Load Power Supplies
• Multi-voltage Processors, DSPs, ASICs used in
Telecom, CompactPCI or server systems