IBM IC35L036UWDY10 Hard Drive Specifications - Page 48

dc power, 5.1 Input voltage, 5.2 Power supply current

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7.5 DC power requirements The following voltage specification applies at the drive power connector. Connections to the drive should be made in a safety extra low voltage (SELV) circuit. There is no special power on/off sequencing required. Adequate secondary over-current protection is the responsibility of the system. A limit of 10 A is required for safety purposes. 7.5.1 Input voltage +5 volts supply +12 volts supply During run and spin up 5 V ± 5% 12 V ± 5% * Absolute max spike voltage 5.5 V 15 V Supply rise time 0-200 ms 0-400 ms Figure 30. Input voltage * NOTE: -8% is acceptable during spin up, but the spin up time is not guaranteed. CAUTION: To avoid damage to the drive electronics, power supply voltage spikes must not exceed 5.5 V. 7.5.2 Power supply current Note: Seek power is at 50 IOPS and R/W power is at 30 IOPS with 4 KB R/W. 146-GB models (All values in Amps.) Idle Average Idle ripple (peak-to-peak) Seek average Seek peak Start up (max) Random R/W peak Random R/W average +5 Volts Pop Mean 0.50 0.22 0.55 0.91 1.07 1.40 0.66 +5 Volts Std. Dev 0.02 0.02 0.02 0.05 0.03 0.10 0.02 Figure 31. Power supply current of 146-GB models +12 Volts Pop Mean 0.64 0.42 1.10 2.40 2.40 2.40 0.97 +12 Volts Std. Dev 0.03 0.10 0.03 0.10 0.13 0.10 0.03 Total (W) 10.2 n/a 16.0 n/a n/a n/a 14.9 73-GB models (All values in Amps.) Idle Average Idle ripple (peak-to-peak) Seek average Seek peak Start up (max) Random R/W peak Random R/W average +5 Volts Pop Mean 0.50 0.22 0.55 0.91 1.07 1.40 0.66 +5 Volts Std. Dev 0.02 0.02 0.02 0.05 0.03 0.10 0.02 Figure 32. Power supply current of 73-GB models +12 Volts Pop Mean 0.43 0.40 0.92 2.23 2.23 2.23 0.79 +12 Volts Std. Dev 0.03 0.10 0.03 0.10 0.13 0.10 0.03 Total (W) 7.7 n/a 13.8 n/a n/a n/a 12.8 Ultrastar 146Z10 hard disk drive specifications 32

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7.5
DC power requirements
The following voltage specification applies at the drive power connector.
Connections to the drive should
be made in a safety extra low voltage (SELV) circuit.
There is no special power on/off sequencing
required.
Adequate secondary over-current protection is the responsibility of the system.
A limit of 10 A is required
for safety purposes.
7.5.1 Input voltage
0-400 ms
15 V
12 V ± 5% *
+12 volts supply
0-200 ms
5.5 V
5 V ± 5%
+5 volts supply
Supply rise time
Absolute max
spike voltage
During run and
spin up
Figure 30.
Input voltage
*
NOTE: –8% is acceptable during spin up, but the spin up time is not guaranteed.
CAUTION: To avoid damage to the drive electronics, power supply voltage spikes must not exceed
5.5 V.
7.5.2 Power supply current
Note: Seek power is at 50 IOPS and R/W power is at 30 IOPS with 4 KB R/W.
14.9
0.03
0.97
0.02
0.66
Random R/W average
n/a
0.10
2.40
0.10
1.40
Random R/W peak
n/a
0.13
2.40
0.03
1.07
Start up (max)
n/a
0.10
2.40
0.05
0.91
Seek peak
16.0
0.03
1.10
0.02
0.55
Seek average
n/a
0.10
0.42
0.02
0.22
Idle ripple (peak-to-peak)
10.2
0.03
0.64
0.02
0.50
Idle Average
Total (W)
+12 Volts
Std. Dev
+12 Volts
Pop Mean
+5 Volts
Std. Dev
+5 Volts
Pop Mean
146-GB models
(All values in Amps.)
Figure 31.
Power supply current of 146-GB models
12.8
0.03
0.79
0.02
0.66
Random R/W average
n/a
0.10
2.23
0.10
1.40
Random R/W peak
n/a
0.13
2.23
0.03
1.07
Start up (max)
n/a
0.10
2.23
0.05
0.91
Seek peak
13.8
0.03
0.92
0.02
0.55
Seek average
n/a
0.10
0.40
0.02
0.22
Idle ripple (peak-to-peak)
7.7
0.03
0.43
0.02
0.50
Idle Average
Total (W)
+12 Volts
Std. Dev
+12 Volts
Pop Mean
+5 Volts
Std. Dev
+5 Volts
Pop Mean
73-GB models
(All values in Amps.)
Figure 32.
Power supply current of 73-GB models
Ultrastar 146Z10 hard disk drive specifications
32