HA13561F
Combo (Spindle & VCM) Driver
ADE-207-182 (Z)
1st Edition
July 1996
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-80E (QFP80 Pin)
Low thermal resistance: 35
C/W with 6 layer multi glass-epoxy board
Low output saturation voltage
Spindle
0.8 V Typ (@1.0 A)
VCM
0.8 V Typ (@0.8 A)
Functions
1.8 A Max/3-phase motor driver
1.2 A Max BTL VCM Driver
Auto retract
Soft Switching Matrix
Start up circuit
Booster
Speed Discriminator
Internal Protector (OTSD, LVI)
POR
Power monitor
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Pin Arrangement
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
VBST
VCMP
VCMN
BC2
BC1
TAB
W
RNF
PCOMP
CT
V
TAB
TAB
TAB
COMPOUT
NC*
NC*
GAIN
VCMENAB
SPNENAB
READY
CLOCK
CNTSEL
POR
RS
RETON
RETPOW
Vpsv
LVI2
OPIN(-)
VCTL
OPIN(
+
)
RESINH
VREF1
U
C-PUMP
CLREF
R1
Vpss
Vss
LVI1
DELAY
COMM
POLSEL
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63
61
62
*NC : No internal connection
Please note that there is no isolation check between pin 58 and pin 59
at the testing of this IC.
(Top View)
HA13561F
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Pin Description
Pin Number Pin Name
Function
1
VBST
Boosted voltage output to realize the low output saturation voltage
2
VCMP
Output terminal on VCM driver
3
VCMN
Output terminal on VCM driver
4
BC2
To be attached the external capacitor for booster circuitry
5
BC1
ditto
6 to 15
GND
Ground pins
16
W
W phase output terminal on spindle motor driver
17
RNF
Sensing input for output current on spindle motor driver
18
PCOMP
To be attached the external capacitor for phase compensation of spindle
motor driver
19
CT
To be attached the center tap of the spindle motor for B-EMF sensing
20
V
V phase output terminal on spindle motor driver
21
U
U phase output terminal on spindle motor driver
22
C-PUMP
To be attached the external integral constants for speed control of spindle
motor
23
CLREF
Reference voltage input for current limiter of spindle motor driver
24
R1
To be attached the external resistor for setting up the oscillation frequency of
start-up circuitry and the gain of speed control loop of spindle motor driver
25
Vpss
Power supply for spindle motor driver
26 to 35
GND
Ground pins
36
V
SS
Power supply for small signal block
37
LVI1
Sensing input for power monitor circuitry
38
DELAY
To be attached the external capacitor to generate the delay time for power on
reset signal
39
COMM
To be attached the external capacitor for setting up the oscillation frequency
40
POLSEL
To be selected the input status corresponding to the pole number of spindle
motor
41
CNTSEL
To select the count Number of Speed Discriminator
42
CLOCK
Master clock input for this IC
43
READY
Output of speed lock detector for spindle motor
44
SPNENAB
To select the status of spindle motor driver
45
POR
Output of power on reset signal for HDD system
46 to 55
GND
Ground pins
56
VCMENAB
To select the status of VCM driver
57
GAIN
To select the Transfer conductance gm of VCM driver
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Pin Description (cont)
Pin Number Pin Name
Function
58
NC
No function
59
NC
ditto
60
COMPOUT
Comparator output to detect the direction of output current on VCM driver
61
VREF1
Regulated voltage output to be used as reference of peripheral ICs
62
RESINH
Used for inhibiting the restart function of the spindle motor driver after power
down
63
OPIN (+)
Non inverted input of OP.Amp. to be used for filtering the signal on PWMOUT
64
VCTL
OP. Amp. output, this signal is used as control signal for VCM driver output
65
OPIN ()
Inverted input of OP.Amp. to be used for filtering the signal on PWMOUT
66 to 75
GND
Ground pins
76
LVI2
Sensing input for power monitor circuitry
77
Vpsv
Power supply for VCM driver
78
RETPOW
Power supply for retract circuitry
79
RETON
To be attached the base terminal of external transistor for retracting
80
RS
Sensing input for output current on VCM driver
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