View KA3016D_856446.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

CD-ROM PRODUCTS
KA3016D
SPINDLE MOTOR DRIVER
The KA3016D is a monolithic integrated circuit, suitable for a 3-phase spindle motor drive of a CD system.
28-SSOPH-375
FEATURES
* * * * * * * * * * 3-phase, full-wave, linear BLDC motor driver Power save at stop mode Built-in current limiter Built-in TSD (Thermal shutdown) circuit Built-in 3X or 1X hall FG output Built-in hall bias circuit Built-in rotational direction detector Built-in reverse rotation preventer Built-in short braker Corresponds to 3.3V or 5V DSP Device KA3016D Package 28-SSOPH-375 Operating Temperature -25C ~ +75C
ORDERING INFORMATION
BLOCK DIAGRAM
VCC ECR FGS CS1 PC1
DIR
S/S
VM
NC
NC
EC
28
27
26
25
24 FG Generator
23
22 - +
21
20
19
18
17
16
15
Start Stop
Short Brake
Current sense Amp
Output Current limit
Reverse rotation
Absolute Values
Logic
FG Selector
TSD Upper Distributor Detection Detector
Lower Distributor
Communication Selector
Hall amp
1 NC
2 A3
3 NC
4 A2
5 NC
6 NC
7 A1
8 GND
9 H1+
10 H1-
11 H2+
12 H2-
13 H3+
14 H3-
Hall
VH
FG
SB
Rev. B
MIC-99D001 January 1999
(c) 1999 Fairchild Semiconductor Corporation
1
KA3016D
CD-ROM PRODUCTS
PIN CONFIGURATION
VCC
ECR
CS1
FGS
VM
NC
FG
EC
NC 16 13 H3+
28
27
26
25
24
23
22
21
20
19
18
17
15
KA3016D
1 NC
2 A3
3 NC
4 A2
5 NC
6 NC
7 A1 FIN(GND)
8 GND
9 H1+
10 H1-
11 H2+
12 H2-
14 H3-
PIN DESCRIPTIONS
Pin No. Symbol 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NC A3 NC A2 NC NC A1 GND H1+ H1- H2+ H2- H3+ H3- I/O - O - O - - O - I I I I I I Description No connection Output (A3) No connection Output (A2) No connection No connection Output (A1) Ground Hall signal (H1+) Hall signal (H1-) Hall signal (H2+) Hall signal (H2-) Hall signal (H3+) Hall signal (H3-) Pin No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Symbol VH NC PC1 SB FGS DIR ECR EC S/S FG VCC NC VM CS1 I/O I - - I I O I I I O - - - - Hall bias No connection Phase compensation capacitor Short brake Frequency generation selection Rotational direction output Output current control reference Output current control voltage Power save (Start/Stop switch) Frequency generation waveform (3X or 1X hall frequency) Supply voltage (Signal) No connection Supply voltage (Motor) Output current detection Description
2
MIC-99D001 January 1999
VH
SB
FIN(GND)
PC1
S/S
DIR
CD-ROM PRODUCTS
KA3016D
EQUIVALENT CIRCUITS
Hall input Driver output
27 9 50 11 13 1k 1k 50 12 14 10
28
2
4
7
Torque control input
Hall bias input
50 21 50 22 -
+
5 15
50k
Current detector
Start / Stop
50 23
50k 18 30k
50
50k
30k
Dir or FG output
FGS input
VCC 20k 50 20 24 19 30k 50 50k
MIC-99D001 January 1999
3
KA3016D
CD-ROM PRODUCTS
ABSOLUTE MAXIMUM RATING (Ta=25C)
Characteristics Maximum supply voltage (Signal) Maximum supply voltage (Motor) Power dissipation Maximum output current Operating temperature range Storage temperature range Symbol VCCMAX VMMAX PD IOMAX TOPR TSTG Value 7 18 1.7note 1.3 -25 ~ +75 -55 ~ +150 Unit V V W A C C
NOTE: 1. When mounted on 76.2mm x 114mm x 1.57mm PCB (Phenolic resin material) 2. Power dissipation is reduced 13.6 mV / C for using above Ta=25C 3. Do not exceed Pd and SOA (Safe operating area).
Pd (mW) 3,000 2,000
1,000 0
SOA 0 25 50 75 100 125 150 175
Ambient temperature, Ta [C]
RECOMMENDED OPERATING CONDITIONS
Characteristics Supply voltage Motor supply voltage Symbol VCC VM Min. 4.5 3.0 Typ. 5 12 Max. 5.5 15 Unit V V
4
MIC-99D001 January 1999
CD-ROM PRODUCTS
KA3016D
ELECTRICAL CHARATERISTICS
(Unless otherwise specified, Ta=25C, VCC=5V, VM=12V) Characteristics Quiescent circuit current START / STOP On voltage range Off voltage range HALL BIAS Hall bias voltage HALL AMP Hall bias current Common mode input range Minimum input level TORQUE CONTROL ECR input voltage range EC input voltage range Offset voltage (-) Offset voltage (+) EC input current ECR input current In/output gain FG FG output voltage (H) FG output voltage (L) Input voltage range OUTPUT BLOCK Saturation voltage (upper TR) Saturation voltage (lower TR) Torque limit current DIRECTION DETECTOR Dir output voltage (H) Dir output voltage (L) VDIRH VDIRL IFG=-10A IFG=10A 3.0 - - - VCC 0.5 V V VOH VOL ITL IO= -300mA IO=300mA R CS=0.5 - - 560 0.9 0.2 700 1.6 0.6 840 V V mA VFGH VFGI IFG= -10A IFG=10A - 3.0 - - - - 50 VCC 0.5 - V V % ECR EC ECOFF- ECOFF+ ECIN ECRIN GEC EC=2.5V EC=2.5V EC=2.5V ECR=2.5V ECR=2.5V, RCS=0.5 - - 0.2 0.2 -80 20 -5 -5 0.41 - - -50 50 0.5 0.5 0.51 4.0 4.0 -20 80 5 5 0.61 V V mV mV A A A/V IHA VHAR VINH - - - - 1.5 100 0.5 - - 2 4.0 - A V mVpp VHB IHB=20mA 0.4 1.0 1.8 V VSSON VSSOFF Output drive on Output driver off 2.5 0.0 - - VCC 1.0 V V Symbol ICC Test conditions - Min. 2 Typ. 5 Max. 8 Unit mA
MIC-99D001 January 1999
5
KA3016D
CD-ROM PRODUCTS
ELECTRICAL CHARATERISTICS (Continued)
(Unless otherwise specified, Ta=25C, VCC=5V, VM=12V) Characteristics FG SELECTION 3X frequency selection 1X frequency selection SHORT BRAKE On voltage range Off voltage range VSBON VSBOFF - - 2.5 0 - - VCC 1.0 V V VFG3X VFG1X FGS > 2.5V FGS < 1.0 2.5 - - - VCC 1.0 V V Symbol Test conditions Min. Typ. Max. Unit
CALCUALTION OF GAIN & TORQUE LIMIT CURRENT
VM IO VM
Current / Voltage Convertor - Vin EC ECR + - Gm Absolute Values + + + + Vmax - VM R1 -
- VS Output RS Current sense + CS1 (Pin 28)
Negative Feedback loop U V W IO
Driver
Power Transistors
Commutation Distributor H1 H2
H3
Max. output current limiting
0.255 which is made from GM times R1 is fixed value within IC.
0.255 Gain = ------------RS
Vmax (see above block diagram) is setted to 350mV.
Vmax 350 [ mV ] Itl [ mA ] = -------------- = ---------------------RS RS
6
MIC-99D001 January 1999
CD-ROM PRODUCTS
KA3016D
APPLICATION INFORMATION
1. TORQUE CONTROL & OUTPUT CURRENT CONTROL
VM + VM VCS - Current Sense AMP - TSD EC Gain Controller RCS
Torque AMP ECR + - + ECR-EC
IO Driver M
* *
By amplifying the voltage difference between EC and ecr from servo IC, the torque sense amp produces the input (VAMP) for the current sense amp. The output current (IO) is converted into the voltage (VCS) through the sense resistor (RCS) and compared with the VAMP. By the negative feedback loop, the sensed output voltage, VCS is equal to the input VAMP. Therefore, the output current (IO) is linearly controlled by the input VAMP. As a result, the signals, EC and ECR can control the velocity of the Motor by controlling the output current (IO) of the Driver. The range of the torque voltage is as shown below.
* *
VRNF [V] Reverse Forward
Rotation ECR > EC Forward rotation Stop after detecting reverse rotation
Ecoff-
Ecoff+
ECR < EC
0.51[A/V]
3 mV -50mV 0 50mV ECR -E C
The input range of ECR, EC is 0.2V ~ 4V.
MIC-99D001 January 1999
7
KA3016D
CD-ROM PRODUCTS
2. SHORT BRAKE
MOTOR VCC OFF
ON OFF
18
2 50k ON 30k 4 7
Pin # 18 High Low
Short brake On Off
When the pick-up part moves from the inner to the outer spindle of the CD, the brake function of the reverse voltage is commonly employed to decrease the rotating velocity of the spindle motor. However, if the spindle motor rotates rapidly, the brake function of the reverse voltage may produce much heat at the Drive IC. To remove this shortcoming and to enhance the braking efficiency, the short brake function is added to KA3016D. When the short brake function is active, all upper power TRs turn off and all lower power TRs turn on, so as to make the rotating velocity of the Motor slow down. But FG and DIR functions continue to operate normally.
3. POWER SAVE
MOTOR VCC OFF
23 Start Stop
2 50k ON 30k 4 7
Pin # 23 High Low
Start/Stop Operate Stop
When power save function active, all power TRs turn off but FG and DIR functions continue to operate normally.
8
MIC-99D001 January 1999
CD-ROM PRODUCTS
KA3016D
4. TSD (THERMAL SHUTDOWN)
Gain Controller BIAS Q2
When the chip temperature rises up to about 175C, the Q2 turns on so that the output driver will be shutdown. When the chip temperature falls off to about 150C, then the Q2 turns off so that the driver is to operate normally. Thus, TSD has the temperature hysteresis of about 25C.
MIC-99D001 January 1999
9
KA3016D
CD-ROM PRODUCTS
5. ROTATIONAL DIRETION DETECTION
VCC
H2+ H2-
+ -
DIR 20 D Q
Rotation Forward Reverse
20
DIR Low
High
CK H3+ H3- + - D-F/F
* *
The forward and the reverse rotations of the CD are simply detected by using the D-F/F and the truth table is shown in the above table. The rotational direction of the CD can be explained by the output waveforms of the hall sensors. Let the three outputs of hall sensors be H1, H2 and H3 respectively. When the spindle rotates in reverse direction, the hall sensor output waveforms are shown in Fig.(a). Thus the phases orderd in H1H2H3 with a 120C phase difference.
H1
H2
H3
( a) Reverse rotation
On the other hand, if the spindle rotates in forwand rotation, the phase relationship is H3H2H1 as shown in fig.(b).
H1
H2
H3
( b) Forward rotaion
Therefore, the output of the rotational direction detector is low, when the spindle rotates forward, while high as in the case of the reverse rotation. MIC-99D001 January 1999
10
CD-ROM PRODUCTS
KA3016D
6. REVERSE ROTATION PREVENTION
EC ECR
+ -
Current Sense Amp
H2+ H2-
+ - A D CK D-F/F Q
Low Active
H3+ H3-
+ -
Gain Controller
Driver
M
*
When the output of the OR Gate, A is low, it steers all the output current of the current sense amp makes the current delivered to the gain controller zero. Thus the output current of the driver becomes zero and the motor is stopped. As in the state of the forward rotation, the D-F/F output, Q is high and the motor rotates normally. At this state if the control input is changed such that EC>ECR, then the motor rotates slowly more and more by the reverse commutation in the driver. At the moment that the motor rotates in reverse direction, the D-F/F output becomes low and the OR gate output, thus, becomes low. This prevents the motor from rotating in reverse direction. The operation principle is shown in the table and the flow chart.. Rotation H2 H3 D-F/F (Q) H L Reverse rotation preventer EC>ECR Forward - EC>ECR - Brake and stop
*
Forward Reverse
H L
HL HL
Forward rotation at EC < ECR Rotating speed is decreased due to reverse torque at EC >E CR. (Motor still rotates forward) At the moment that the motor rotates in reverse, the reverse rotation preventer makes the output power transistor open. Rotating reverse at short time due to motor inertia Stop within 1/6 turn reverse rotating
MIC-99D001 January 1999
11
KA3016D
CD-ROM PRODUCTS
7. FG OUTPUT
H1- H1+ FG1X
H2- FG3X H2+
Mux
FG
H3- FGS H3+
FGS GND or Open VCC
FG FG1X (1X hall frequency) FG3X (3X hall frequency)
8. HALL SENSOR CONNECTION
VCC VCC
HALL 1 HALL 1 HALL 2 HALL 3
HALL 2
HALL 3
15 VH
15 VH
12
MIC-99D001 January 1999
CD-ROM PRODUCTS
KA3016D
9. Connect a by-pass capacitor, 0.1F between the supply voltage source.
Vcc
25 0.1F
10. The heat radiation fin is connected to the internal GND of the package. Connect that fin to the external GND.
MIC-99D001 January 1999
13
KA3016D
CD-ROM PRODUCTS
11. INPUT-OUTPUT TIMING CHART
H1 +
H2 +
H3 +
A1 output current (H1 -)+(H2 +)
A1 output voltage
A2 output current (H2 -)+(H3 +)
A2 output voltage
A3 output current (H3 -)+(H1 +)
A3 output voltage
14
MIC-99D001 January 1999
CD-ROM PRODUCTS
KA3016D
TEST CIRCUITS
10A
20mA
14 5V 12V VR1 IM3 A IM2 A 10uA 15 VM7 V RCS 0.5 VM6 VR2 VR3
V VM5
13
V VM3
VR5
IM1 A
IM2 A V VM4 VR4 0.1F 19 FGS 18 SB 17 PC1 16 NC 15 VH
28 CS1
27 VM
26 NC
25 VCC
24 FG
23 SS
22 EC
21 ECR
20 DIR
KA3016D
NC 1
A3 2
NC 3
A2 4
NC 5
NC 6
A1 7
GND 8
H1+ 9 IM4
H1- 10 IM5 A
H2+ 11 IM6 A
H2- 12 IM7 A
H3+ 13 IM8 A
H3- 14 IM9 A
SW1 VM8 V c b a c b
SW2 a V c b
SW3 a V
A VR8 VR9
VR10 VR11 VR12 VR13
RL=5
RL=5
RL=5
SW13 a b
V
VM1 12V 300mA 300mA
V VM2
MIC-99D001 January 1999
15
KA3016D
CD-ROM PRODUCTS
TYPICAL APPLICATION
0.5 1 NC CS1 28 VM 27 NC 26 VM (12V)
2 3 4 5 6 7
A3 NC
A2 NC NC
VCC 25 FG 24 ST SS 23 SP EC 22 1.675V VCC (5V)
A1
KA3016D
OR 2.1
8 9 HALL 1 10
GND
ECR 21
H1+ H1-
DIR 20 FGS 19 SB 18
Servo Signal
11 HALL 2 12 13 HALL 3 14
H2+ H2-
R2 PC1 17 NC 16 VH 15 R1 0.1F
H3+ H3-
16
MIC-99D001 January 1999
CD-ROM PRODUCTS
KA3016D
PACKAGE DIMENSION
MIC-99D001 January 1999
17
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks.
ACExTM CoolFETTM CROSSVOLTTM E2CMOSTM FACTTM FACT Quiet SeriesTM FAST(R) FASTrTM GTOTM HiSeCTM
DISCLAIMER
ISOPLANARTM MICROWIRETM POPTM PowerTrenchTM QSTM Quiet SeriesTM SuperSOTTM-3 SuperSOTTM-6 SuperSOTTM-8 TinyLogicTM
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or 2. A critical component is any component of a life support device or system whose failure to perform can systems which, (a) are intended for surgical implant into be reasonably expected to cause the failure of the life the body, or (b) support or sustain life, or (c) whose support device or system, or to affect its safety or failure to perform when properly used in accordance with instructions for use provided in the labeling, can be effectiveness. reasonably expected to result in significant injury to the user. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Product Status Formative or In Design Definition This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design.
Preliminary
First Production
No Identification Needed
Full Production
Obsolete
Not In Production
This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only.

▲Up To Search▲

Price & Availability of KA3016D

	To Download KA3016D Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .