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PDF HA13557AFH Data sheet ( Hoja de datos )
| Número de pieza | HA13557AFH | |
| Descripción | Combo (Spindle & VCM) Driver | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HA13557AFH
Combo (Spindle & VCM) Driver
ADE-207-234A (Z)
2nd. Edition
July 1997
Description
This COMBO Driver for HDD application consists of Sensorless Spindle Driver and BTL type VCM
Driver.
Bipolar Process is applied and a “Soft Switching Circuit” for less commutation noise and a “Booster
Circuit” for smaller Saturation Voltage of Output Transistor are also implemented.
Features
• Soft Switching Driver
• Small Surface Mount Package: FP-48T (QFP48 Pin)
• Low thermal resistance: 30°C/W with 4 layer multi glass-epoxy board
• Low output saturation voltage
Spindle 1.44 V Typ (@1.8 A)
VCM 1.0 V Typ (@1.0 A)
Functions
• 2.2 A Max/3-phase motor driver
• 1.5 A Max BTL VCM Driver
• Auto retract
• Soft Switching Matrix
• Start up circuit
• Booster
• Speed Discriminator
• Internal Protector (OTSD, LVI)
• POR
• Power monitor
1 page  
Block Diagram
HA13557AFH
VSS (+5V)
VSS
20
C102
Vps(+12V)
Vpss
17
C101
11CT
RESINH 38
C103
COMM
23
C-PUMP
14
C2 C1
CLREF
15
R1b
R1
16
R1a 28
SPNENAB
POLSEL 24
CLOCK
(5MHz Typ)
26
CNTSEL 25
READY 27
VCTL 40
OPIN(–) 41
OPIN(+) 39
Vref1 37
NC 34
NC 35
GAIN 33
VCM ENAB 32
BC1 5
C104
BC2 4
1
C105 VBST
B-EMF
AMP.
START-UP
CIRCUIT
CHARGE
PUMP
SOFT
SWITCHING
MATRIX
VBST
COMMUTATION
LOGIC
CURRENT
CONTROL
D2
U
SPINDLE
DRIVER
V
13
U
D3
12
V
D4
W 8W
RNF
9
C110
PCOMP
10
C111
(D1) SPEED DISCRI.
1/32 (CNT)
SPEED
READY
–
+ OPAMP.
Vref1
(=4.6V) OTSD
Vpsv 45
C109
RETPOW
46
VBST
RETON
RETRACT
47
DRIVER
VCMP
R112
R113
Qret1
C112 R109
Qret2
R110
P
+ VCM
DRIVER
2
RS
–N
3
VCMN
CX
RX RL
48RS
–
+
36
COMP
OUT
VBST Vss
Vps
BOOSTER
POWER
MONITOR
POR
Delay
Vss LVI1 21 44 LVI2
(+5V) R101
R103
R102 R104
22
Vps DELAY
(+12V) C106
COMPARATOR
R105 Vss(+5V)
GND
TAB
6, 7, 18, 19, 30,
31, 42, 43
29
POR
(L:RESET)
R111
D1
5
5 Page 
HA13557AFH
4. Braking & Shut down the Spindle Driver
SPNENAB
,,Open
> 20µs
ON CUT OFF
BRAKING
,,Open
CUT OFF
Note: The SPNENAB should be selected the open state after braking to reduce the supply current from
Vps and VSS.
5. Start-up of the Spindle motor
,Open
SPNENAB
tCOMM (see External Components Table)
COMM
GND
Vth1
Vth2
SOURCE
IU 0
SINK
SOURCE
IV 0
SINK
SOURCE
IW 0
SINK
Synchronous Driving for motor start up
not detecting the B-EMF
detecting the B-EMF
Driving by
B-EMF sensing
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet HA13557AFH.PDF ] | |
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