Intel H2000WP Technical Product Specification - Page 34

Power Sub-System Intel® Server Chassis H2000 Family TPS Table 27. PSON# Signal Characteristics. Signal Type PSON# = Low PSON# = High or Open Logic level low (power supply ON) Logic level high (power supply OFF) Source current, Vpson = low Power up delay: Tpson_on_delay PWOK delay: T pson_pwok Accepts an open collector/drain input from the system. Pull-up to VSB located in power supply. ON OFF MIN MAX 0V 1.0V 2.0V 3.46V 4mA 5msec 400msec 50msec 3.5.2 PWOK(power good) Output Signal PWOK is a power OK signal and will be pulled HIGH by the power supply to indicate that all the outputs are within the regulation limits of the power supply. When any output voltage falls below regulation limits or when AC power has been removed for a time sufficiently long so that power supply operation is no longer guaranteed, PWOK will be de-asserted to a LOW state. See the table below for a representation of the timing characteristics of PWOK. The start of the PWOK delay time shall inhibited as long as any power supply output is in current limit. Table 28. PWOK Signal Characteristics PWOK = High PWOK = Low Signal Type Logic level low voltage, Isink=400uA Logic level high voltage, Isource=200A Sink current, PWOK = low Source current, PWOK = high PWOK delay: Tpwok_on PWOK rise and fall time Power down delay: T pwok_off MIN 0V 2.4V 100ms 1ms Power OK Power Not OK MAX 0.4V 3.46V 400uA 2mA 1000ms 100sec 200msec 3.5.3 SMBAlert# Signal This signal indicates that the power supply is experiencing a problem that the user should investigate. This shall be asserted due to Critical events or Warning events. The signal shall activate in the case of critical component temperature reached a warning threshold, general failure, over-current, over-voltage, under-voltage, failed fan. This signal may also indicate the power supply is reaching its end of life or is operating in an environment exceeding the specified limits. This signal is to be asserted in parallel with LED turning solid Amber or blink Amber. 24 Revision 1.0 Intel order number: G59059-001