2540 quad power driver -...

17

MOTOR DRIVERS

A Sanken Company

www.allegromicro.com

Part Numbers: UDN2540B and A2540SLBCombining logic gates and inverting high-currentbipolar outputs, these quad Darlington power driversprovide interface between low-level signal-processingcircuits and power loads totaling 360 W. Each of the fourindependent outputs can sink up to 1.8 A in the ON statewith peak inrush currents to 2.5 A. The four poweroutputs are each comprised of an open-collectorDarlington driver and an internal flyback/clamp diode forswitching inductive leads. They feature a minimumbreakdown and sustaining voltage of 50 V. The logicinputs are compatible with TTL and 5 V CMOS logicsystems.

Typical applications include print heads, relays,solenoids, and dc stepping motors. These drivers can alsobe used to drive high-current incandescent lamps, LEDS,and heaters

Features

1.8 A Continuous Output Current Output Voltage to 50 V TTL and 5 V CMOS Compatible Inputs Efficient Input/Output Pinning Integral Transient-Suppression Diodes Replaces L6221A and L6221CD

Pinout Diagram(A2540SLB)

2540QUAD POWER DRIVER

ENABLE

GROUND

GROUND

OUT2

K

GROUND

GROUND

OUT3

OUT4

K

OUT1

VCC

IN 1

IN 2

IN4

IN3

13

14

17

19

12

18

20

11

NOCONNECTION

NOCONNECTION

NCNC

1

2

3

9

4

7

10

5

6

8

Dwg. PP-017-3

NOCONNECTION

NOCONNECTION

NCNC

SUPPLY

16

15

Downloaded from Elcodis.com electronic components distributor

http://elcodis.com/parts/5774992/UDN2540B.html

18

MOTOR DRIVERS

A Sanken Company


2916 THRU 2919 AND 6219DUAL FULL-BRIDGE PWM MOTOR DRIVERS

Part Max. Continuous PeakNumbers Package Output Voltage Output Current Output Current Protection Features

UDN2916B DIP 45 V ±750 mA ±1 A yes 1/2 stepUDN2916EB PLCCUDN2916LB SOICUDQ2916B DIPUDQ2916EB PLCCUDQ2916LB SOIC

UDN2917EB PLCC 45 V ±1.5 A ±1.75 A yes 1/2 stepUDQ2917EB

A2919SB DIP 45 V ±750 mA ±1 A yes 1/4 stepA2919SLB SOIC

L6219DS SOIC 45 V ±750 mA ±1 A yes 1/2 step

PWM Current-Control Circuitry(2917 shown, quarter-step devices include independent 2-bit reference voltage dividers)

VREF

Dwg. EP-007-2A

VBB

SENSE ONESHOT

SOURCEDISABLE

RC

–+

I 0

I1

÷10

E

OUT A

OUTB

CHANNEL 1PIN NUMBERSSHOWN.

RC

RSRT

CCCT

22

20 kΩ

40 kΩ10 kΩ

36

5

4

41

2

1

44



19

MOTOR DRIVERS

A Sanken Company


2916 THRU 2919 AND 6219DUAL FULL-BRIDGE PWM MOTOR DRIVERS (CONT’D)

Dual full-bridge motor drivers are designed todrive both windings of a bipolar stepper motor orbidirectionally control two dc motors. Both bridgesinclude internal pulse-width modulation (PWM)control of the output current. Satlington outputscombine the low voltage drop of a saturated transistorand the high peak current capability of a Darlington.

For PWM current control, the maximum outputcurrent is determined by the user’s selection of areference voltage and sensing resistor. With quarter-step operation, two logic-level inputs select outputcurrent limits of 0, 33 or 41, 67, or 100% of themaximum level. A PHASE input to each bridgedetermines load current direction.

The bridges include both ground clamp andflyback diodes for protection against inductive tran-sients. Internally generated delays prevent cross-overcurrents when switching current direction. Specialpower-up sequencing is not required. Thermal pro-tection circuitry disables the outputs if the chiptemperature exceeds safe operating limits.

Features

750 mA Continuous Output Current 45 V Output Sustaining Voltage Internal Clamp Diodes Internal PWM Current Control Low Output Saturation Voltage Internal Thermal Shutdown Circuitry

VREF

Dwg. EP-007B

VBB

SENSE ONESHOT

SOURCEDISABLE

RC

–+

I 0

I1

÷10

E

OUT A

OUTB

'B' PACKAGE,CHANNEL 1PIN NUMBERSSHOWN.

RC

RSRT

CCCT

24

20 kΩ

40 kΩ10 kΩ

211

23

22

14

20

17

15

PWM Current-Control Circuitrywith Quarter Stepping

(UDN2916B shown)



20

MOTOR DRIVERS

A Sanken Company


2962DUAL HALF-BRIDGE PWM SOLENOID/MOTOR DRIVER

Features

4 A Peak Output 45 V Min. Sustaining Voltage Internal Clamp Diodes TTL/PMOS/CMOS Compatible Inputs High-Speed Chopper

Part Number: UDN2962W

Using PWM to minimize power dissipation andmaximize load efficiency, this dual driver is recom-mended for impact printer solenoids and steppermotors. It is comprised of two source/sink driverpairs and can be connected to drive two independentloads or a single load in the full-bridge configuration.Both drivers include output clamp/flyback diodes,input gain and level shifting, a voltage regulator forsingle-supply operation, and pulse-width modulatedoutput-current control circuitry. Inputs are compat-ible with most TTL, DTL, LSTTL, and low-voltageCMOS or PMOS logic.

The peak output current and hysteresis for eachsource/sink pair is set independently. Output current,threshold voltage, and hysteresis are set by the user’sselection of external resistors. At the specifiedoutput-current trip level, the source driver turns OFF.The internal clamp diode then allows current to flowwithout additional input from the power supply.When the lower current trip point is reached, thesource driver turns back ON.

Functional Block Diagram(One of Two Drivers)

VCC

SOURCE

LOAD

SINK

SENSE

RS(TYP.0.1 ) VREF

RH

RT

THS-10

+

_

GND

IN



21

MOTOR DRIVERS

A Sanken Company


3932THREE-PHASE BRUSHLESS DC MOTOR CONTROLLER

Features and Benefits Drives Wide Range of N-Channel MOSFETs Sources 1.25 A for Gate Turn-On Sinks 2.5 A for Gate Turn-Off Synchronous Rectification Power MOSFET Protection Adjustable Dead Time for Cross Conduction Protection Fast and Slow Current Decay Modes Internal PWM Current Control PWM Torque-Control Input Motor Lead Short-to-Supply and Ground Protection Internal 5 V Regulator Direction Control Brake Input Fault Diagnostic Output Tachometer Output Thermal Shutdown Undervoltage Protection

Part Number: A3932SEQ

Turn-onDelay

ControlLogic

VREG

Regulator

VBB

BootcapMonitor

Gate-SourceMonitor

Dead-TimeAdjust

UndervoltageDetect

RC BlankingFixed - Off

Time

Turn-onDelay

VREG

Bootstrap lowVgs Low

Invalid HallUndervoltage

LCAP

HighSide

Driver

LowSide

Driver

High Side ProtectionLogic

CA

GHA

SA

DEAD

GLA

PGND

FAULT

AGND

RC

MODE

SR

PWM

SENSE

To Phase B

REF

-

+

CBOOT

to LCAP

DIR

RESET

BRAKE

RT

CT

To Phase C

H2

H1

H3

TACH

Low Side ProtectionLogic

RS

Motor Lead Short

to LCAP

to LCAP

Functional Block Diagram & Typical Application

NE W



22

MOTOR DRIVERS

A Sanken Company


LOW-SIDESYNCHRONOUSRECTIFICATION

UNDER-VOLTAGEDETECT

BOOTSTRAPCHARGE

TURN-ONDELAY

TURN-ONDELAY

DEAD-TIMEADJUST

BOOTSTRAPMONITOR

GATE-SOURCEMONITOR

H1

H2

H3

DIR

RESET

MODE

PWM

REF

SENSE

BRAKE

BRKSEL

Dwg. FP-045

BRAKE

CONTROLLOGIC

RC BLANKING(FIXED OFF TIME)

REGULATOR

HIGH-SIDEDRIVER

+

–

LCAP VCCOUT

LOW-SIDEDRIVER

BOOTSTRAP LOWVGS LOW

INVALID HALLUNDERVOLTAGE

VBB

1 OF 3 HIGH-SIDE DRIVERS

1 OF 3 LOW-SIDE DRIVERS

DEAD

FAULT

AGND

TO1 OF 3MOTORPHASES

TOSENSE

+V

RS

CX

GHX

SX

GLX

PGND

CONNECT FOR12-V OPERATION

TOLCAP

Cboot

BRKCAP

RC

TOVCCOUT

RT CT

3933THREE-PHASE BRUSHLESS DC MOTOR CONTROLLER

Functional Block Diagram & Typical Application

Features and Benefits Drives External N-Channel FETs Intelligent High-Side Gate Drive Selectable Coast or Dynamic Brake on Power Down Adjustable Dead Time

for Cross-Conduction Protection Selectable Fast or Slow Current-Decay Modes Internal PWM Peak Current Control Reset/Coast Input 120° Hall Commutation with Internal Pullup Operation From 12 V to 28 V

Internal 5-V Regulator Low-Side Synchronous Rectification Direction Control PWM Speed-Control Input Fault-Diagnostic Output Under-Voltage Protection

Part Number: A3933SEQ

NE W



23

MOTOR DRIVERS

A Sanken Company


Part Output RatingsNumbers Current Features

A3951SB ±2 A, 50 V brakeA3951SW

A3952SB ±2 A, 50 V fast/slow decayA3952SEB sleep modeA3952SLB brakeA3952SW

A3953SB ±1.3 A, 50 V fast/slow decayA3953SLB sleep mode

Satlington™ sinkbrake

3951, 3952, AND 3953FULL-BRIDGE PWM MOTOR DRIVERS

VBB

RC

VCCLOGIC

SUPPLY

LOA

DS

UP

PLY

9

PHASE

UVLO& TSD

RS

Dwg. FP-036-2A

MODE

REF

OU

T A

OU

TB

ENABLE

SENSE–

+

BRAKE

INP

UT

LO

GIC

GROUND

QR

S

PWM LATCH

VCC+ –

BLANKING

SLEEP &STANDBY MODES

VTH

RT

CT

1

23

6

7

8

10

11

14

15

4

GROUND

12

LOA

DS

UP

PLY

16

5 13

Internal fixed off-time PWM current-control circuitrycan be used to regulate the maximum load current to adesired value. The peak load current limit is set by theuser’s selection of an input reference voltage and exter-nal sensing resistor. The fixed off-time pulse duration isset by a user-selected external RC timing network.Internal circuit protection includes thermal shutdownwith hysteresis, transient-suppression diodes, andcrossover current protection. Special power-up sequenc-ing is not required.

When a logic low is applied to the BRAKE input, thebraking function is enabled. This overrides ENABLEand PHASE to turn OFF both source drivers and turn ONboth sink drivers. The brake function can be used todynamically brake brush dc motors.

Typical Functional Block Diagram(A3953SB shown)



24

MOTOR DRIVERS

A Sanken Company


3955 AND 3957FULL-BRIDGE PWM MOTOR DRIVERS

13

RE

F

D

3 11 20

D/A

2 1 0

PFD 2 +–

VBB

RC

RS

Dwg. FP-042-1

SENSE

17

18

19

VCC

BLANKING

VCC

LOG

ICS

UP

PLY

9PHASE

10

UVLO& TSD

GROUND

QR

S

PWM LATCH

+ –

VTH

RT

CT

5

6

LOA

DS

UP

PLY

23

7

MIXED-DECAYCOMPARATOR +

–

OU

TA

OU

T B

15 22

÷3DISABLE

CURRENT-SENSECOMPARATOR

BLANKINGGATE

D DD

8

3

Functional Block Diagram(A3957SLB shown)

Intended to drive one winding of a bipolar steppermotor in a microstepping mode. Internal pulse-widthmodulated (PWM) current control combined with aninternal nonlinear digital-to-analog converter allows themotor current to be controlled in full-, half-, quarter-,eighth-, or sixteenth-step (microstepping, 3957 only)modes. Nonlinear increments minimize the number ofcontrol lines necessary for microstepping.

Internal circuitry determineswhether the PWM current-controlcircuitry operates in a slow(recirculating) current-decaymode, fast (regenerative) current-decay mode, or in a mixedcurrent-decay mode in which theoff time is divided into a periodof fast current decay with theremainder of the fixed off timespent in slow current decay. Thecombination of user-selectablecurrent-sensing resistor andreference voltage, digitallyselected output current ratio; andslow, fast, or mixed current-decay modes provides users witha broad, variable range of motorcontrol.

Internal circuit protectionincludes thermal shutdown withhysteresis, transient-suppressiondiodes, and crossover currentprotection. Special power-upsequencing is not required.

Part Numbers: A3955SB, A3955SLB,A3957SA, and A3957SLB

Features ±1.5 A Continuous Output Current 50 V Output Voltage Rating Internal PWM Current Control 3-Bit Non-Linear DAC for 8-Bit Microstepping

(3955) or 4-Bit for 16-Bit Microstepping (3957) Satlington™ Sink Drivers Fast, Mixed Fast/Slow, and

Slow Current-Decay Modes Internal Transient-Suppression Diodes Internal Thermal-Shutdown Circuitry Crossover-Current and UVLO Protection



25

MOTOR DRIVERS

A Sanken Company


3958DMOS FULL-BRIDGE PWM MOTOR DRIVER

CHARGE PUMPBANDGAP

VDDCREG

TSD

UNDER-VOLTAGE &

FAULT DETECT

CHARGEPUMP

BANDGAPREGULATOR

VDD VBB

+LOGIC

SUPPLY

VREG

CP

1

CP

CP

2 LOADSUPPLY

GA

TE

DR

IVE

Dwg. FP-048

SLEEPMODE

RANGE

CONTROL LOGIC

PH

AS

EE

NA

BLE

SY

NC

RE

CT

MO

DE

SY

NC

RE

CT

DIS

AB

LEP

WM

MO

DE

INT

PW

M M

OD

E E

XT

PROGRAMMABLEPWM TIMER

SENSE

RSFIXED OFF

BLANKDECAY

MODE

PHASE

ENABLE

CLOCKDATA

STROBE

RANGE

REFERENCEBUFFER &DIVIDER

CURRENTSENSE

ZEROCURRENT

DETECTOSC

OUTA

OUTB

REFSERIALPORT

VREF

CS

Features

±2 A, 50 V Continuous Output Rating Low rDS(on) Outputs (270 mΩ, Typical) Programmable Mixed, Fast, and Slow Current-

Decay Modes Serial Interface Controls Chip Functions Synchronous Rectification for Low Power

Dissipation Internal UVLO and Thermal-Shutdown Circuitry Crossover-Current Protection

Part Numbers: A3958SB and A3958SLB

Internal fixed off-time PWM current-control timingcircuitry can be programmed via a serial interface tooperate in slow, fast, and mixed current-decay modes.

PHASE and ENABLE input terminals are providedfor use in controlling the speed and direction of a dc motorwith externally applied PWM-control signals. TheENABLE input can be programmed via the serial port toPWM the bridge in fast or slow current decay. Internalsynchronous rectification control circuitry is provided toreduce power dissipation during PWM operation.

Functional Block Diagram



26

MOTOR DRIVERS

A Sanken Company


3966 AND 3968DUAL FULL-BRIDGE PWM MOTOR DRIVERS

Typical Functional Block Diagram(3966 shown)

R2SR1S

REFERENCE

÷4

VCC

LOGICSUPPLY

PHASE 1

LOADSUPPLYO

UT

1A

OU

T1B

VBB

RC

RT

CT

Dwg. FP-036-6

SENSE

UVLO& TSD

BLANKINGGATE

Q

R

S

PWM LATCH +–


ENABLE 1

OSC

+

PHASE2

GROUND

SENSE

UVLO& TSD

BLANKINGGATE

Q

R

S

PWM LATCH+–


ENABLE 2

CO

NT

RO

L LO

GIC

SO

UR

CE

EN

AB

LE

OU

T2A

OU

T2B

21 22 2

2

2

1 11

CO

NT

RO

L LO

GIC

1

SO

UR

CE

EN

AB

LE1

All devices include two H-bridges capable of continu-ous output currents of ±650 mA and operating voltages to30 V. Motor winding current can be controlled by theinternal fixed-frequency, pulse-width modulated (PWM),current-control circuitry. The peak load current limit is setby the user’s selection of a reference voltage and current-sensing resistors.

The fixed-frequency pulse duration is set by auser-selected external RC timing network. The capacitorin the RC timing network also determines a user-selectableblanking window that prevents false triggering of thePWM current-control circuitry during switching transi-tions.

To reduce on-chip power dissipation, the H-bridgepower outputs have been optimized for low saturationvoltages. The sink drivers feature Allegro’s patentedSatlington™ output structure. The Satlington outputscombine the low voltage drop of a saturated transistor andthe high peak current capability of a Darlington.

Part Numbers: A3966SA, A3966SLB,A3968SA, and A3968SLB

Features ±650 mA Continuous Output Current 30 V Output Voltage Rating Internal Fixed-Frequency PWM Current Control Brake Mode (3968 only) Satlington™ Sink Drivers User-Selectable Blanking Window Internal Ground-Clamp & Flyback Diodes Internal Thermal-Shutdown Circuitry Crossover-Current Protection and

UVLO Protection



27

MOTOR DRIVERS

A Sanken Company


3971DMOS DUAL FULL-BRIDGE MOTOR DRIVER

Features

±2.5 A, 50 V Continuous Output RatingParallel Outputs for 5 A Load Current Capability

Low rDS(on) Outputs(typically 300 mΩ source, 160 mΩ sink)

Synchronous Rectification Internal Undervoltage Monitor Crossover-Current Protection Connection for External Current Sensing Thermal-Shutdown Circuitry

BRIDGE 1CONTROL

LOGIC

VOLTAGEREFERENCE

UVLO/THERMAL

SHUTDOWN

OUT2A

SENSE2

GATEDRIVE

CHARGE PUMP

CP1CP2

VCP

VBB2

S02

S12

OUT2B

.22uf/100V

VDD

DMOS H-BRIDGE

.22uf/50V

OUT1A

VBB1

OUT1B

DMOS H-BRIDGE

SENSE1

VCP

GROUND

S01

S11

PWM1

PWM2

VREF

Low Side Suppy

BRIDGE 2CONTROL

LOGIC

LGND

(OPTIONAL)

(OPTIONAL)

Input Pulldown

Input Pulldown

Load Supply


NE W

Part Number: A3971SLB



28

MOTOR DRIVERS

A Sanken Company


3972DMOS DUAL FULL-BRIDGE PWM

MICROSTEPPING MOTOR DRIVER

NE W

Part Number: A3972SB

CONTROLLOGIC

REGULATORUVLO ANDFAULT

DETECT

OUT1A

SENSE1

GATEDRIVE

CHARGE PUMP

VREGCP1CP2

VCP

VBB1

BANDGAP

OSC

SERIALPORT

CLOCK

DATA

STROBE

OUT 1B

.22uf

+ -

VDD

Phase1/2

Sync Rect Mode

Sync Rect Disable

Mode1/2

DMOS H-BRIDGE

.22uf

.22uf

REF

OUT 2A

VBB2

OUT2B

DMOS H-BRIDGE

SENSE26 BIT

LINEAR

DAC

PROGRAMMABLE

PWM TIMER

Fixed-Off

Blank

Mixed Decay

PROGRAMMABLE

PWM TIMER

Fixed-Off

Blank

Mixed Decay

6 BIT

LINEAR

DAC

+ -

Sense1

VCP

To

2 VREF

2.5V

GROUND

MUX

INTERNAL

OSCILATOR

OSC SELECT/

DIVIDER

Buffer

.1uF

SLEEP

To VDD

Features

±1.5 A, 50 V Continuous Output Rating

Low rDS(on) DMOS Output Drivers

Optimized Microstepping via 6-Bit Linear DACs Programmable Mixed, Fast, and Slow

Current-Decay Modes Internal 4 MHz Oscillator for Digital Timing Internal Transient-Suppression Diodes Serial Interface Controls Chip Functions Synchronous Rectification for

Low Power Dissipation Internal UVLO and Thermal Shutdown Circuitry Crossover-Current Protection Precision 2 V Reference Inputs Compatible with 5 V or

3.3 V Control Signals Sleep and Idle Modes




29

MOTOR DRIVERS

A Sanken Company


NE W


Features ±500 mA Continuous Output Current

35 V Load Dump Survival

Output Short-Circuit Protection

Coded Fault Diagnostic Outputs

Open Load Monitor

Low-Current Standby Mode

VBB Overvoltage Shutdown

Internal Thermal Shutdown Circuitry

Internal Low-Parasitic Free-Wheeling Diodes

Crossover Current Protection

Part Numbers: A3976KLB and A3976KB

3976DUAL FULL-BRIDGE

PROTECTED MOTOR DRIVER

CONTROLLOGIC

Diagnostic Logic

OUT1A

VBB

OUT1B

VCC

GROUND

PHASE1

ENABLE1

To Bridge 2

To Bridge 2

OUT2A

OUT2B

PHASE2

ENABLE2

FAULT1

FAULT2

ThermalShutdown

Short to SupplyMonitor

Short to GroundMonitor

Over/UnderVoltageMonitor

Input Pull Down



30

MOTOR DRIVERS

A Sanken Company


5804BiMOS II UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER

Part Numbers: A5804B and UCN5804LB

Dwg. W-194

Features 1.5 A Maximum Output Current

35 V Output Sustaining Voltage

Wave-Drive, Two-Phase, andHalf-Step Drive Formats

Internal Clamp Diodes

Output Enable and Direction Control

Power-ON Reset

Internal Thermal Shutdown Circuitry

Combining low-power CMOS logic with high-current and high-voltage bipolar outputs, theUCN5804B and UCN5804LB BiMOS II translator/drivers provide complete control and drive for a four-phase unipolar stepper-motor.

The CMOS logic section provides the sequencinglogic, DIRECTION and OUTPUT ENABLE control,and a power-ON reset function. Three stepper-motordrive formats, wave-drive (one-phase), two-phase,and half-step are externally selectable. The inputsare compatible with standard CMOS, PMOS, andNMOS circuits. TTL or LSTTL may require the use ofappropriate pull-up resistors to ensure a proper input-logic high.

The wave-drive format consists of energizing onemotor phase at a time in an A-B-C-D (or D-C-B-A)sequence. This excitation mode consumes the leastpower and assures positional accuracy regardless ofany winding inbalance in the motor. Two-phase driveenergizes two adjacent phases in each detent posi-tion (AB-BC-CD-DA). This sequence mode offers animproved torque-speed product, greater detenttorque, and is less susceptible to motor resonance.Half-step excitation alternates between the one-phase and two-phase modes (A-AB-B-BC-C-CD-D-DA), providing an eight-step sequence.

SUPPLY

DIRECTION

OUTPUTENABLE

GROUND

GROUND

GROUND

GROUND

STEP INPUT

HALF-STEP

ONE-PHASEOUTPUT

OUTPUT

OUTPUT

OUTPUT B

BD

D

K

C

AC

A

K

LOGIC

OE

16DDV

15

14

13

12

11

10

98

7

6

5

4

3

2

1



31

MOTOR DRIVERS

A Sanken Company


7024, 7026, AND 7029HIGH-CURRENT PWM, UNIPOLAR STEPPER

MOTOR CONTROLLER/DRIVERS

Benefits and Features Cost-Effective, Multi-Chip Solution ‘Turn-Key’ Motion-Control Module Motor Operation to 3 A and 46 V 3rd Generation High-Voltage FETs 100 V, Avalanche-Rated NMOS Low rDS(on) NMOS Outputs Advanced, Improved Body Diodes Single-Supply Motor/Module

Operation Half- or Full-Step Unipolar Drive High-Efficiency, High-Speed PWM Dual PWM Current Control (2-Phase)

Programmable PWM Current Control Low Component Count PWM Drive Low Internal Power Dissipation Heat Sinking (Normally) Unnecessary Electrically Isolated Power Tab Logic IC- and µP-Compatible Inputs Machine-Insertable Package

Part Number Package Output Current

SLA7024M 18-Lead Power-Tab SIP 1.5 ASLA7026M 18-Lead Power-Tab SIP 3.0 ASMA7029M 15-Lead SIP 1.5 A

Functional Block Diagram(SLA7024M and SLA7026M)

+14

Dwg. FK-005

+

12

15 10

11181617

13

REG.

7 6 5

3

2 4

1

9

8

VCC

IN A/B

SENSEGROUNDOFF-TIMEDELAY

CONTROLSUPPLY IN A/B OUT A/B OUTA/B

RE

FE

RE

NC

E

CHANNEL A PIN NUMBERS

CHANNEL B PIN NUMBERS



32

MOTOR DRIVERS

A Sanken Company


7042 AND 7044MICROSTEPPING, UNIPOLAR PWM, HIGH-CURRENT

MOTOR CONTROLLER/DRIVERS

Benefits and Features Cost-Effective, Multi-Chip Solution ‘Turn-Key’ Motion-Control Module Motor Operation to 3 A and 46 V 3rd Generation High-Voltage FETs 100 V, Avalanche-Rated NMOS Low rDS(on) NMOS Outputs Advanced, Improved Body Diodes Microstepping Unipolar Drive High-Efficiency, High-Speed PWM Independent PWM Current Control (2-Phase) Digitally Programmable PWM Current Control Low Component-Count PWM Drive Low Internal-Power Dissipation

PR

OG

RA

MM

AB

LEP

WM

OF

F T

IME

RN

OIS

E F

ILT

ER

+D/A

LATCHES

SHIFT REG

12

7

GROUND

143

Dwg. FK-006

+

15

10

1811

4 8

9

1

VDD

SENSE

CONTROLSUPPLY OUT A/B OUTA/B

REF/ENABLE

CHANNEL A PIN NUMBERS

CHANNEL B PIN NUMBERS

V – 1DD

PHASE

STROBE

DATA

CLOCK

132

176

165

ENABLE

VREF

Electrically Isolated Power Tab Logic IC- and µP-Compatible Inputs Machine-Insertable 18-Pin Power-Tab Package

NOTE — The PG001M parallel-to-serial data con-verter is intended to be used with these devices.

Max. Max.Part Number IOUT rDS(on)

SLA7042M 1.5 A 0.67 ΩSLA7044M 3 A 0.285 Ω




33

MOTOR DRIVERS

A Sanken Company


8902-A3-PHASE BRUSHLESS DC MOTOR

CONTROLLER/DRIVER WITH BACK-EMF SENSING

CURRENTCONTROL

Dwg. FP-034

2221

23

1720

CENTERTAP 10

C WD 3

OSC 16

SECTORDATA 14

FILTER

13

C ST

4

C RES

12

BRAKE

11

OUT A

OUTB

OUTC

CO

MM

UT

AT

ION

LOG

IC

COMMUTATIONDELAY

CD1 C D2

24 2

WATCHDOGTIMER

SE

QU

EN

CE

LOG

IC

BLANK

FCOMOUTA5

OUTB8

OUTC9

1LOADSUPPLYV BB

CHARGEPUMP

FREQUENCY-LOCKED LOOP

SERIAL PORT MUX

CLO

CK

DATA IN

DA

TA

OU

T

CH

IPS

ELE

CT

RE

SE

T

TSD

RS

15

V DD

LOGICSUPPLY

START-UPOSC.

BOOSTCHARGE

PUMPBRAKE

18-19

6-7 GROUND

GROUND

Features DMOS Outputs Low rDS(on) Startup Commutation Circuitry Back-EMF Commutation Circuitry Serial Port Interface Frequency-Locked Loop Speed Control Sector Data or Tachometer Signal Input Programmable Start-Up Current Diagnostics Mode Sleep Mode

Linear Current Control Internal Current Sensing Dynamic Braking Through Serial Port Power-Down Dynamic Braking System Diagnostics Data Out Data Out Ported in Real Time Internal Thermal Shutdown Circuitry

Typical Functional Block Diagram

Part Number: A8902CLBA



34

MOTOR DRIVERS

A Sanken Company


8932-A AND 8958VOICE COIL MOTOR DRIVERS

8932-A Features 5 Volt Operation Class-B, 2 Ω rDS(on) at 500 mA Output Lossless Current Sensing Zero Current-Loop Deadband High Transconductance Bandwidth User-Adjustable Transconductance Gain Digital Transconductance Gain Switch (4:1 Ratio) 5 Volt Monitor with Selectable UV Trip Point Retract Circuitry Functional to 0 Volts Sleep Mode Function Internal Back-EMF Velocity Loop Option Internal Thermal Shutdown Circuitry

Providing control and drive of the voice coil motorused for head positioning in disk drive applications, thesefull-bridge drivers can be configured so that their outputcurrent is a direct function of an externally applied controlvoltage or current. This linear current control function issupplemented by additional circuitry to protect the loadduring system failure or normal system shutdown.

GROUND

Dwg. FP-020C

1.5 V

LOGICSUPPLY

OUT OUTA B

SENSE OUT

PARKVOLTAGE

LIMIT

PARK

PWR OK(ACTIVE HIGH)

PARKDRIVE

B

–

+

VBB

+

–

+

–

+

–

–

+ A

+

–

1.5 V

–

+

1.5 V

3 V

V CC1.5 VBANDGAP REF

4 kΩ

4 kΩ

8 kΩ

8 kΩ

INHIBIT

LOADSUPPLY

TSD

GROUNDAB

UV1

UV2

INB–

IN B+

A–IN

A+IN

GROUNDAB

IN+SENSE

IN–SENSE

8

5

11

10

17

9

22

20

21

24

14

12 13

15

2

1

23

16

4

3

6, 7 18, 19

FunctionalBlockDiagram(8958)

8958 Features 8 V to 16 V Operation Controlled-Velocity Head Parking Zero Deadband High Transconductance Bandwidth User-Adjustable Transconductance Gain ±800 mA Load Current Dual Under-Voltage Monitors

with Flag and User-Selectable Trip Points Internal Thermal Shutdown Circuitry

Part Numbers: A8932CLWA and A8958CLB



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