Intel SR1530HCLS Product Specification - Page 20

Protection Circuits, 2.5.1 Over-current Protection (OCP)

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Power Sub-System Intel® Server Systems SR1530CL/SR1530HCL/SR1530HCS and SR1530CLR/SR1530HCLR/SR1530HCLSR 4 VAC. Application of an input voltage below 85 VAC shall not cause damage to the power supply, including a fuse blow. Parameter Voltage (110) Voltage (220) Frequency Table 11. AC Input Rating Minimum 90 Vrms 180 Vrms 47 Hz Rated 100-127 Vrms 200-240 Vrms Maximum 140 Vrms 264 Vrms 63 Hz Start up VAC 85Vac +/-4Vac Power Off VAC 75VAC +/-5VAC 2.5 Protection Circuits Protection circuits inside the power supply shall cause only the power supply's main outputs to shut down. If the power supply latches off due to a protection circuit tripping, an AC cycle off for 15 seconds and a PSON# cycle high for 1 second shall be able to reset the power supply. 2.5.1 Over-current Protection (OCP) The power supply shall have current limit to prevent the +3.3 V, +5 V, and +12 V outputs from exceeding the values shown in the following table. If the current limits are exceeded the power supply shall shutdown and latch off. The latch will be cleared by toggling the PSON# signal or by an AC power interruption. The power supply shall not be damaged from repeated power cycling in this condition. -12 V and 5 VSB shall be protected under over-current or shorted conditions so that no damage can occur to the power supply. Auto-recovery feature is a requirement on 5 VSB rail. Table 12. Over-current Protection (OCP) Voltage +3.3V +5V +12V -12V 5VSB Over-current Limit (Iout limit) 110% minimum (= 16.5A) ; 150% maximum (= 22.5A) 110% min (= 11.0A); 150% max (= 15.0A) 39.6A min; 54.0A max 0.625A min; 2.0A max 6.0A max 2.5.2 Over-voltage Protection (OVP) The power supply over-voltage protection shall be locally sensed. The power supply shall shut down and latch off after an over-voltage condition occurs. This latch shall be cleared by toggling the PSON# signal or by an AC power interruption. The following table contains the over-voltage limits. The values are measured at the output of the power supply's connectors. The voltage shall never exceed the maximum levels when measured at the power pins of the power supply connector during any single point of fail. The voltage shall never trip any lower than the minimum levels when measured at the power pins of the power supply connector. Exception: +5VSB rail should be able to recover after an over-voltage condition occurs. 12 Revision 2.2 Intel order number D71005-005

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Power Sub-System
Intel® Server Systems SR1530CL/SR1530HCL/SR1530HCS
and SR1530CLR/SR1530HCLR/SR1530HCLSR
Revision 2.2
Intel order number D71005-005
12
4 VAC. Application of an input voltage below 85 VAC shall not cause damage to the power
supply, including a fuse blow.
Table 11. AC Input Rating
Parameter
Minimum
Rated
Maximum
Start up VAC
Power Off VAC
Voltage (110)
90 V
rms
100-127 V
rms
140 V
rms
85Vac +/-4Vac
75VAC +/-5VAC
Voltage (220)
180 V
rms
200-240 V
rms
264 V
rms
Frequency
47 Hz
63 Hz
2.5
Protection Circuits
Protection circuits inside the power supply shall cause only the power supply’s main outputs to
shut down. If the power supply latches off due to a protection circuit tripping, an AC cycle off for
15 seconds and a PSON
#
cycle high for 1 second shall be able to reset the power supply.
2.5.1
Over-current Protection (OCP)
The power supply shall have current limit to prevent the +3.3 V, +5 V, and +12 V outputs from
exceeding the values shown in the following table. If the current limits are exceeded the power
supply shall shutdown and latch off. The latch will be cleared by toggling the PSON
#
signal or by
an AC power interruption. The power supply shall not be damaged from repeated power cycling
in this condition. -12 V and 5 VSB shall be protected under over-current or shorted conditions so
that no damage can occur to the power supply. Auto-recovery feature is a requirement on 5
VSB rail.
Table 12. Over-current Protection (OCP)
Voltage
Over-current Limit (Iout limit)
+3.3V
110% minimum (= 16.5A) ; 150% maximum (= 22.5A)
+5V
110% min (= 11.0A); 150% max (= 15.0A)
+12V
39.6A min; 54.0A max
-12V
0.625A min; 2.0A max
5VSB
6.0A max
2.5.2
Over-voltage Protection (OVP)
The power supply over-voltage protection shall be locally sensed. The power supply shall shut
down and latch off after an over-voltage condition occurs. This latch shall be cleared by toggling
the PSON
#
signal or by an AC power interruption. The following table contains the over-voltage
limits. The values are measured at the output of the power supply’s connectors. The voltage
shall never exceed the maximum levels when measured at the power pins of the power supply
connector during any single point of fail. The voltage shall never trip any lower than the
minimum levels when measured at the power pins of the power supply connector.
Exception: +5VSB rail should be able to recover after an over-voltage condition occurs.