DC1627A-A

DC1627A-A demonstration circuit features the LTC4226CUD-1 wide operating range dual hot swap controller. The DC1627A has two independent circuits, each for two rails. The circuit placed on the upper board area is for a high current load. The first channel of the upper board circuit operates with a 10A maximum in the +12V rail while the second channel operates with a 5A maximum in the +5V rail. Provision is made for the installation of several MOSFET packages to test LTC4226's performance during a short time with the larger current. Circuit LEDs indicate a presence of the input rail voltages and fault conditions in each rail. There are two jumpers: one for the current limit multiplicity selection and the other one for overvoltage protection configuration. The circuit located on the lower board area is a special compact circuit for the Apple FireWire/IEEE 1394 power distribution.

• Input supply range from 9.79 to 16V (upper circuit +12V channel)
• 12000V/s min output voltage slew rate (no current limit)
• Input supply range from 4.11 to 7.3V (upper circuit +5V channel)
• 5.55A max circuit breaker current limit
• 80ms max timer period during circuit breaker operation
• Input supply range from 4.62 to 16.7V (based on the ON pin threshold)