1.3 Power Requirements. Fujitsu MPE3XXXAT

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1.3 Power Requirements. Fujitsu MPE3XXXAT | Manualzz

1.2.2

Model and product number

Table 1.2 lists the model names and product numbers.

Table 1.2

Model names and product numbers

Model Name Capacity

(user area)

Mounting

Screw

Order No.

MPE3064AT 6.48 GB No. 6-32UNC CA05367-B321

MPE3102AT 10.24 GB No. 6-32UNC CA05367-B331

MPE3136AT 13.66 GB No. 6-32UNC CA05367-B341

MPE3170AT 17.08 GB No. 6-32UNC CA05367-B351

MPE3204AT 20.49 GB No. 6-32UNC CA05367-B361

MPE3273AT 27.32 GB No. 6-32UNC CA05367-B381

Remarks

1.3

(1)

Power Requirements

Input Voltage

+ 5 V ±5 %

+ 12 V ±8 %

(2) Ripple

+12 V +5 V

Maximum 200 mV (peak to peak) 100 mV (peak to peak)

Frequency DC to 1 MHz DC to 1 MHz

(3) Current Requirements and Power Dissipation

Table 1.3 lists the current and power dissipation.

C141-E077-01EN 1 - 5

Table 1.3

Current and power dissipation

Mode of Operation

Model

Spin up

Idle (Ready) (*3)

R/W (On Track) (*4)

Seek (Random) (*5)

Seek/W/R

Typical RMS current (*1) [mA]

+12 V +5 V

Typical Power (*2) [watts]

MPE3064

AT

MPE3102/

MPE3136

AT

MPE3170/

MPE3204

AT

MPE3273

AT

All Models MPE3064

AT

MPE3102/

MPE3136

AT

MPE3170/

MPE3204

AT

MPE3273

AT

1500

1800 peak

1500

1800 peak

1600

1800 peak

1600

1800 peak

572

592 peak

21.1

21.1

22.3

22.3

140

180

170

210

200

240

240

280

340

620

3.4

5.3

3.7

5.6

4.1

6.0

4.6

6.5

300 330 360 400 620 6.7

7.1

7.4

7.9

Standby

Sleep

7

7

7

7

7

7

7

7

185

185

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

*1 Current is typical rms except for spin up.

*2 Power requirements reflect nominal values for +12V and +5V power.

*3 Idle mode is in effect when the drive is not reading, writing, seeking, or executing any commands. A portion of the R/W circuitry is powered down, the spindle motor is up to speed and the Drive ready condition exists.

*4 R/W mode is defined as 50% read operations and 50% write operations on a single physical track.

*5 Seek/W/R mode is defined as 33% seek operations, 33% write operations and 33% read operations.

1 - 6 C141-E077-01EN

(4) Current fluctuation (Typ.) when power is turned on

[A]

0.5

0.0

1

+5VDC

(0.5A/div)

[A]

1.5

1.0

0.5

0.0

2

+12VDC

(0.5A/div)

0 1 2 3 4 5 6 7 8 [seconds]

Note:

Maximum current is 1.9 A.

Figure 1.1

Current fluctuation (Typ.) when power is turned on

(5) Power on/off sequence

The voltage detector circuit monitors +5 V and +12 V. The circuit does not allow a write signal if either voltage is abnormal. This prevents data from being destroyed and eliminates the need to be concerned with the power on/off sequence.

C141-E077-01EN 1 - 7

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