RENESAS M56733AFP

M56733AFP
3-Phase Brushless Motor Driver
REJ03F0081-0100Z
Rev.1.0
Sep.22.2003
Description
The M56733AFP is a semiconductor integrated circuit designed as a single-chip controller for FDD spindle motors. It
incorporates a power amplifier, Hall amplifier, FG amplifier, oscillator, and speed discriminator, along with various
protective circuits. Control of switching between three speeds by the single MOD pin gives this IC the edge for use in
compact systems.
Features
•
•
•
•
•
Digital servo provides high precision, good stability, and freedom from the need for adjustment.
A single pin controls switching between three speed. ••• MOD
Two enable signals. ••• EN, EN
IO (peak) = 1.0 A
Low-capacitance damping capacitor
Applications
• FDD spindle motors (5 inches)
Recommended Operating Conditions
•
•
•
•
Power-supply voltage: 10.8 (min.) to 13.2 (max.), 12.0 (typ.)
Oscillation frequency: 492 kHz
Maximum output current: 800 mA
FG amplifier input signal level: 5 mVp-p or more
Rev.1.00, Sep.22.2003, page 1 of 6
M56733AFP
Block Diagram
U
V
W
FLT
ERROUT
ERRIN(–)
DSCOUT
36
35
34
17
20
19
18
RF 31
VREF
–
7
to
ERR
+
–
+
12
GND
OVSD
CTL
DISCRIMINATOR
VREF
25
to
30
LOGIC
VCC 1
+
–
33
32
HU+ HU–
+
–
24
23
HV+ HV–
TSD
+
–
22
21
HW+ HW–
1/N
OSC
EN
CONTROL
FG
2
6
13
Hall
Bias
EN
EN
–
+
3
4
FG– FG+
Pin Configuration
VCC 1
36
U
HB 2
35
V
FGIN– 3
34
W
FGIN+ 4
33
HU+
FGMoni 5
32
HU–
EN 6
31
RF
7
30
9
GND
10
11
M56733AFP
8
28
27
GND
26
12
25
13
24
HV+
OSCIN 14
23
HV–
OSCOUT 15
22
HW+
MOD 16
21
HW–
FLT 17
20
ERROUT
DSCOUT 18
19
ERRIN–
EN
36P2R-D
Rev.1.00, Sep.22.2003, page 2 of 6
29
5
FG
(Monitor)
14
15
OSCIN OSCOUT
16 MOD
M56733AFP
Absolute Maximum Ratings
(Ta = 25°C)
Symbol
Parameter
Test conditions
VCC
IO
VHD
Power-supply voltage
Output current
Hall amplifier differential input
voltages
VIN
Voltage applied to pins
fIN
Pt
Kθ
Tj
Topr
Tstg
Clock frequency
Allowable dissipation
Thermal derating range
Junction temperature
Ambient operating temperature
Storage temperature
Between pins 21 and 22, 23
and 24, and 32 and 3
Ratings
Unit
15
1.0
5
V
A
V
0 to Vcc
V
1000
4.5
27.8
150
–20 to 75
–40 to 125
kHz
A
°C/W
°C
°C
°C
6, 13, 21 to 24, 32, 33
(pin numbers)
Infinite heat sink
Infinite heat sink
Characteristic curves
Thermal derating curve
Allowable power dissipation Pdp (W)
5.0
4.5
Given an infinite heat sink
4.0
Not given an infinite
heat sink
3.0
2.0
1.0
0
0
25
50
75
100
125
Ambient temperature Ta (°C)
Rev.1.00, Sep.22.2003, page 3 of 6
150
M56733AFP
Electrical Characteristics
(unless otherwise noted, Ta = 25°C, VCC = 5.0 V,)
Symbol
Parameter
Test conditions
Limits
Min
Typ
Max
ICCH
Circuit Current
9
18
28
mA
ICCL
Circuit Current
When the circuit is switched on.
Excludes the injector current.
When only the minimal circuit is
switched on.
—
—
300
µA
IINHA
VN
Current input to the Hall amplifier
Voltage when the output is at the
mid-phase point
—
5.1
0.4
6.3
4.0
7.1
µA
V
∆VN
Difference of voltage when the
output is at the mid-phase point
—
—
0.2
V
Vsat
Saturation output voltage
Io = 0.7 A, sum of upper and lower
transistors
—
2.8
3.2
V
VTH
Control-input reference voltage
FLT-pin voltage for which motor
rotates
1.05
1.20
1.35
V
GV
Voltage gain between control
input and output
Source side
Sink side
Source and sink sides
∆GV
Difference of voltage-gain
between phases
16.65
20.82
26.00
—
18.05
23.80
28.00
—
25.10
26.81
30.00
2
dB
dB
dB
dB
Vref
Error amplifier reference voltage
Intermediate level of discriminator
output is measured
2.0
2.2
2.4
V
IIN•E
VO•E
Error amplifier input current
Error amplifier output level
VCL
Current-limiting reference voltage
–0.2
2.2
0.6
0.36
–0.02
2.5
0.8
0.40
3.1
1.05
0.44
µA
V
V
V
VIN
Function- input threshold voltage
IIN
Current input to the function-input
pins
Vinj
VoDSC
Injector pin voltage
Discriminator output level
∆T
Discriminator count error
2.5
—
500
–150
0.6
4.1
0.5
–6
—
—
700
–100
0.9
4.8
0.8
1
—
0.1
1000
–70
1.5
5.3
1.2
6
V
V
V
V
V
V
V
µA
fosc
IinjMAX
IinjMIN
VOLFG
Oscillation frequency
Injector max. operating current
Injector min. operating current
FG amplifier output low level
(monitor)
fosc = 492 kHz
fosc = 492 kHz
fosc = 492 kHz
IL = 200 µA
–0.2
25
—
—
—
—
—
0.1
0.2
—
4
0.2
%
mA
mA
V
I1FG
FG amplifier output pin leakage
current (monitor)
When 12 V is applied
—
—
1.0
µA
IINMOD
Current input to the MOD pin
When 12 V is applied
When 0 V is applied
435
–75
565
–98
800
–140
µA
µA
Rev.1.00, Sep.22.2003, page 4 of 6
High
Low
The RF pin voltage when voltage on
the FLT pin falls below 1.5 V. No
load.
High
Pins 6 and 13
Low
VIN = 12 V, pin 6
VIN 0 V, pin 13
High
Low
+: Deceleration side
-: Acceleration side
fosc = 492 kHz
Unit
M56733AFP
Application Example
R7
R5
U
*R 8
*C 11
*R 9
*C 12
V
R3
W
R4
C10
*R 10 *C 13
R6
36
35
34
33
32
31
C9
30
29
28
27
26
25
24
23
22
21
20
19
12
13
14
15
16
17
18
M56733AFP
2
1
3
4
5
6
7
8
9
10
11
R2
R1
+ C3
X1
C8
C6
C1
+
FG
C2
C5
VCC
C7
C4
FG EN
Moni
EN
MOD
(Individual values)
C1=33 F
C2=0.47 F
C3=10 F
C4=0.01 F
R1=5.1k
R2=510
C5=165pF
R3=47k
C6=56pF
R4=180k
C7=165pF
R5=1.2k
C8=1 F
R6=0.5
C9=0.01 F
R7=1.2k
C10=0.1 F
R8=4.7
C11=0.1 F
R9=4.7
C12=0.1 F
R10=4.7
C13=0.1 F
X1=492kHz
(Oscillator)
4. Enable function
Notes:
1. Values for elements marked * (asterisk) must be selected to prevent oscillation.
2. R1 is used to boost the injection current. Select a suitable value.
3. Select an element of suitable value as required to adjust the gain.
EN
Lo
Hi
Lo
DISABLE
ENABLE
Hi
DISABLE
DISABLE
EN
5. Mode function
Mode pin
Rev.1.00, Sep.22.2003, page 5 of 6
FG synchronization
frequency
Lo
(MOD ≤ 0.8V)
fosc/1640Hz
M
(Open)
fosc/820Hz
Hi
(MOD V 2.6V)
fosc/ (4100/3) Hz
HE
G
Z1
e
1
36
z
Detail G
D
y
JEDEC Code
—
MMP
b
18
19
Weight(g)
0.53
A
Detail F
A2
Lead Material
Cu Alloy
L1
EIAJ Package Code
SSOP36-P-450-0.80
E
Rev.1.00, Sep.22.2003, page 6 of 6
c
A1
F
L
A
A1
A2
b
c
D
E
e
HE
L
L1
z
Z1
y
Symbol
e1
b2
e1
I2
b2
Dimension in Millimeters
Min
Nom
Max
—
—
2.35
0
0.1
0.2
2.05
—
—
0.35
0.3
0.45
0.18
0.2
0.25
14.8
15.0
15.2
8.2
8.4
8.6
—
0.8
—
11.63
11.93
12.23
0.3
0.5
0.7
—
1.765
—
—
—
0.7
—
0.85
—
—
—
0.15
—
8°
0°
—
—
0.5
—
11.43
—
1.27
—
—
Recommended Mount Pad
e
Plastic 36pin 450mil SSOP
I2
36P2R-D
M56733AFP
Package Dimensions
Sales Strategic Planning Div.
Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan
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