ZHCSJ10B September 2006 – November 2018 TPS2376-H
PRODUCTION DATA.
The IEEE 802.3af requires the PD to accept power on either set of input pairs in either polarity. This requirement is satisfied by using two full-wave input bridge rectifiers as shown in Figure 13. The full configuration may not be required when a custom high-power system is implemented. Silicon p-n diodes with a 1-A or 1.5-A rating and a minimum breakdown of 100 V are recommended, however Schottky diodes will yield a somewhat lower power loss. Diodes exhibit large dynamic resistance under low-current operating conditions such as in detection. The diodes should be tested for their behavior under this condition. The total forward drops must be less than 1.5 V at 500 μA and at the lowest operating temperature.