DC1134A

DC1134A is a demonstration circuit for evaluating the LTC4222 dual hot swap controller with I2C compatible monitoring in +12V/5A and +3.3V/5A applications. The DC1134A can demonstrate turn-on and turn-off transients as well as the steady state mode of the LTC4222. The Controller responds to fault conditions such as input OV, UV, output power good (PWRGD) fault and overcurrent fault, and response may be verified by the Fault Alert LED. The board contains one LTC®4222-UF Controller, two rail channels, input clamps, input and output voltage dividers, LEDs to indicate the presence of input and output voltages, I2C and ALERT signals, three jumpers ADR0, ADR1, and ADR3 for I2C address programming, jumper TIMER SELECT, jumper “ON”, jumper “ON CONFIG”, 2 jumpers “ADIN1” and “ADIN2” for selecting ADC1 and ADC2 input signals, two jumpers “EN1 and EN2” for selection EN1 and EN2 pin signals, I2C port and turret terminals for critical signals to facilitate evaluation in a working system.

• Input supply range from 2.9 to 29V
• Input supply undervoltage lockout range from 2.34 to 2.53V
• 12V first rail operating voltage, 3.3V second rail operating voltage
• 1900V/s max both rails output voltage slew rate
• 1.255V VINPUT(TH) (CONFIG, ENn, FBn, ONn, OVn and Uvn Pin Input Threshold) at VINPUT(TH)
• 5.4A max circuit breaker current limit in both rails