datasheet for SA160DP by Apex Microtechnology

datasheet for SA160DP by Apex Microtechnology
SA160 SA160A
SA160
SA160
H-Bridge Motor Driver/Amplifiers
FEATURES
LOWCOSTCOMPLETEH-BRIDGE
SELF-CONTAINEDSMARTLOWSIDE/
HIGHSIDEDRIVECIRCUITRY
WIDESUPPLYRANGE:UPTO80V
10ACONTINUOUSOUTPUT
14ACONTINUOUSOUTPUTFORA-GRADE
ISOLATEDCASEALLOWSDIRECT
HEATSINKING
FOURQUADRANTOPERATION,TORQUE
CONTROLCAPABILITY
INTERNAL/PROGRAMMABLEPWM
FREQUENCYGENERATION
APPLICATIONS
DESCRIPTION
TheSA160isapulsewidthmodulationampliierthat
cansupply10Acontinuouscurrenttotheload.Thefull
bridge ampliier can be operated over a wide range
ofsupplyvoltages.Allofthedrive/controlcircuitryfor
the lowside and highside switches are internal to the
hybrid. The PWM circuitry is internal as well, leaving
theusertoonlyprovideananalogsignalforthemotor speed/direction, or audio signal for switchmode
audio ampliication.The internal PWM frequency can
be programmed by an external integrator capacitor.
Alternatively, the user may provide an external TTLcompatible PWM signal for simultaneous amplitude
anddirectioncontrolforfourquadrantmode.
BRUSHTYPEMOTORCONTROL
CLASSDSWITCHMODEAMPLIFIER
REACTIVELOADS
MAGNETICCOILS(MRI)
ACTIVEMAGNETICBEARING
VIBRATIONCANCELLING
BLOCK DIAGRAM
DISABLE 3
10 +V
s
ANALOG IN 4
H-Bridge
Drive
Cf/PWM IN 2
11 B OUT
9 A OUT
2 6
ANALOG GND 1
1 555
4
8
7
49K
2.58K
Vcc 7
www.apexanalog.com
SA160U
Copyright © Apex Microtechnology, Inc. 2012
(All Rights Reserved)
8 I
sense A
12 Isense B
6 POWER
GND
JUNE 20131
SA160U REVB
SA160
1. CHARACTERISTICS AND SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Min
Max
Units
SUPPLYVOLTAGE(Note4)
Vs
80
V
OUTPUTCURRENT,continuous
15
A
21
A
16
V
156
W
TEMPERATURE,pinsolder,10smax.
260
°C
TEMPERATURE,junction(Note2)
150
°C
OUTPUTCURRENT,peak,t=100msec,Tcmax=85°C
LOGICSUPPLYVOLTAGE
VCC
POWERDISSIPATION,internal(Note3)
TEMPERATURERANGE,storage
−55
125
°C
OPERATINGTEMPERATURERANGE,case
−40
125
°C
CAUTION
TheSA160isconstructedfromMOSFETtransistors.ESDhandlingproceduresmustbeobserved.
Theexposedsubstratecontainsberyllia(BeO).Donotcrush,machine,orsubjecttotemperatures
inexcessof850°Ctoavoidgeneratingtoxicfumes.
SPECIFICATIONS
SA160
Parameter
1
Test Conditions
Min
Typ
SA160A
Max
Min
Typ
Max
Units
INPUT
ANALOGINPUTVOLTAGES
VCC=12V
A,BOUT=50%DutyCycle
1/2VCC
*
V
AOUT=100%DutyCycleHigh
1/3VCC
*
V
BOUT=100%DutyCycleHigh
2/3VCC
*
V
PWMINPUT
PWMPULSELOWVOLTAGE
0
PWMPULSEHIGHVOLTAGE
2.7
PWMFREQUENCY
45
0.8
*
5.0
*
250
*
*
V
*
V
*
kHz
DISABLEON
2.7
VCC
*
*
V
DISABLEOFF
0
0.8
*
*
V
OUTPUT
TotalVDS(ON)VOLTAGE,both
MOSFETs
IDS=10A
Tc=85°C
1.4
2.5
*
*
V
TOTALRON,bothMOSFETs
IDS=10A
Tc=85°C
.14
0.25
*
*
Ω
EFFICIENCY,10AOUTPUT
VS=80V
97
CURRENT,continuous
Tcmax=85°Cfor
A-Grade
10
14
A
CURRENT,peak
t=100msec,
Tcmax=85°Cfor
A-Grade
15
20
A
SWITCHINGFREQUENCY
CF=270pF
DEADTIME
2
*
%
45
*
kHz
90
*
ns
SA160U
SA160
SA160
Parameter
1
Test Conditions
Min
Typ
SA160A
Max
Min
Typ
Max
Units
*
V
POWER SUPPLY
VSVOLTAGE(Note4)
VSCurrent=Load
Current
VCCVOLTAGE
80
12
15
VCCCURRENT
Fsw=50kHz
9.5
28
36
VSCURRENT
Fsw=50kHz,no
load,VS=50V
6.5
*
*
*
V
mA
mA
*
THERMAL(Note3)
RESISTANCE,junctiontocase
Fulltemperature
range,foreach
transistor
1.4
RESISTANCE,junctiontoair
Fulltemperature
range
30
TEMPERATURERANGE,case
-40
1.60
*
*
°C/W
*
+85
*
°C/W
+125
°C
NOTES: 1. (AllMin/MaxcharacteristicsandspeciicationsareguaranteedovertheSpeciiedOperatingConditions.Typicalperformancecharacteristicsandspeciicationsarederivedfrommeasurementstaken
attypicalsupplyvoltagesandTC=25°C,VCC=12VDC).
2. Longtermoperationatthemaximumjunctiontemperaturewillresultinreducedproductlife.Derate
powerdissipationtoachievehighMTTF.
3. Eachofthetwoactiveoutputtransistorscandissipate78W.
4. Derateto70VbelowTC=+25°C.
SA160U
3
SA160
TOTAL VOLTAGE DROP
POWER DERATING
80
125C
1.6
60
VOLTAGE DROP (V)
INTERNAL POWER DISSIPATION, (W)
2
1.8
40
SA160A
20
1.4
27C
1.2
1
-40C
0.8
0.6
0.4
0.2
EACH OUTPUT
TRANSISTOR
0
0
SA160
25
50
75
100
0
0
125
2
4
6
8
10
12
14
16
OUTPUT CURRENT (A)
CASE TEMPERATURE, T C (C)
TOTAL R ON, both MOSFETs
PWM FREQ VS EXT INT CAP
1000
0.18
125C
CLOCK FREQUENCY, Fsw (KHz)
Ron (Ohm)
0.16
0.14
27C
0.12
0.1
-40C
Cf (pF) = (1.44E7/Fsw)–50
100
0.08
0.06
0
2
4
6
8
10
12
14
10
10
16
OUTPUT CURRENT (A)
100
EXTERNAL INTEGRATION CAP, C (pF)
IQVs vs. SWITCHING FREQ.
VS QUIESCENT CURRENT, (mA)
35
Fsw=50kFz
50% Duty Cycle
No Load
Tc = 125C
25
20
15
Tc = 25C
10
Tc = -40C
5
0
10
20
30
40
50
Vs, (V)
4
60
70
80
VS QUIESCENT CURRENT, (mA)
IQVs vs. Vs VOLTAGE
30
1000
80
Tc = 125C
Vs=45V, Cf=open
PWM IN=0V~5V SquireWavw
No Load
70
60
50
40
Tc = 25C
30
20
Tc = -40C
10
0
0
50
100
150
200
250
SWITCHING FREQUENCY, Fsw (kHz)
SA160U
SA160
REVERSE DIODE
DUTY CYCLE VS ANALOG INPUT
100
DUTY CYCLE (%)
80
A OUT
FLYBACK CURRENT, ISD (A)
10.0
B OUT
60
40
20
0
1/6
1/2
1/3
2/3
5/6
1.0
0.1
0.7
0.8
0.9
1
1.1
1.2
EVERYTHING SOURCE TO DRAIN DIODE VOLTAGE (V)
ANALOG INPUT AS PROPORTION OF Vcc
IQVcc vs. SWITCHING FREQ.
IQVcc vs. Vcc VOLTAGE
60
Vcc QUIESCENT CURRENT, (mA)
38
Vcc QUIESCENT CURRENT, (mA)
40
Vs=45V
No Load
36
34
32
30
28
26
24
50
40
30
20
Vs=45V, Cf=open
PWM IN=0V~5V SquireWavw
10
22
No Load, Full Temp Range
20
9
10
11
12
13
14
15
0
0
50
100
150
200
250
SWITCHING FREQUENCY, Fsw (kHz)
Vcc VOLTAGE, (V)
I QVcc vs. CASE TEMP.
Vcc QUIESCENT CURRENT, (mA)
30
28
26
24
22
20
18
Vs=45V
16
Fsw=50kF
14
12
10
-40 -20
0
20
40
60
80
100 120 140
CASE TEMP (C)
SA160U
5
SA160
EXTERNAL CONNECTIONS
1
2
3
4
5
6
7
8
9
11
‡
‡
DISABLE
PWM
INPUT
Vcc
NC
ANALOG
INPUT
12
*
*
CF
ANALOG
GND
10
POWER
GND
ISENSE A
‡ Required RC network. See paragraph
on transient shutdown.
* Protection diodes are recommended for
applications where +Vs exceeds 50V.
*
A OUT
*
+Vs
ISENSE B
12-pin Power SIP
PACKAGE
STYLE DP
B OUT
TYPICAL APPLICATION
Awidevarietyofloadscanbedrivenineitherthevoltage
11
LOAD
modeorthecurrentmode.Themostcommonapplications
9
usethreeexternalblocks:alowpassilterconvertingpulse
SA160
4
8
width data to an analog output, a difference ampliier to
12
monitorvoltageorcurrentandanerrorampliier.Filterin3
2
ductorsmustbesuitableforsquarewavesattheswitching
frequency(laminatedsteelisgenerallynotacceptable).FiltercapacitorsmustbelowESRandratedfortheexpected
ripplecurrent.Adifferenceampliierwithgainoflessthan
onetranslatesthedifferentialoutputvoltagetoasinglefeedbackvoltage.Dashedlineconnectionsandahigher
gaindifferenceampliierwouldbeusedforcurrentcontrol.Theerrorampliierintegratesthedifferencebetweenthe
inputandfeedbackvoltagestoclosetheloop.
TheSA160alsocanbecontrolledthroughamicrocontroller,
Seeiguretoright.
GENERAL
PleasereadApplicationNote30on"PWMBasics".RefertoApplicationNote1"GeneralOperatingConsiderations"
forhelpfulinformationregardingpowersupplies,heatsinkingandmounting.Visitwww.apexanalog.comfordesign
toolsthathelpautomatepwmilterdesign;heatsinkselection;ApexMicrotechnology’scompleteApplicationNotes
library;TechnicalSeminarWorkbook;andEvaluationKits.
PWM OSCILLATOR – INTERNAL OR EXTERNAL
TheSA160containsaninternalPWMoscillatorwhosefrequencyisdeterminedbyanexternalcapacitorconnected
betweenpin1andpin2.Maximumfrequencyis125kHz.TheusermayalsodisregardtheinternalPWMoscillator
andsupplytheSA160withanexternalTTLpulsegeneratorupto250kHz.
PIN DESCRIPTION
VCC-isthelowvoltagesupplyforpoweringinternallogicanddriversforthelowsideandhighsideMOSFETS.The
suppliesforthehighsidedriversarederivedfromthisvoltage.
VS-isthehighervoltageH-bridgesupply.TheMOSFETSobtaintheoutputcurrentfromthissupplypin.Thevoltage
onthispinislimitedto+80VbythedriveIC.TheMOSFETSareratedat100volts.
6
SA160U
SA160
ISENSE A & B-Thesearetiedtopowergnddirectlyorthroughsenseresistors.
ANALOG GND-isthereferencefortheinternalPWMoscillator.Connectthispintopin6.ConnectlowsideofVcc
supplyandanyothersupplyusedtogenerateanaloginputsignalstoANALOGGND.
ANALOG INPUT-isananaloginputforcontrollingthePWMpulsewidthofthebridge.AvoltagehigherthanVcc/2
willproducegreaterthan50%dutycyclepulsesoutofBOUT.AvoltagelowerthanVcc/2willproducegreater
than50%dutycyclepulsesoutofAOUT.Ifusinginthedigitalmode,biasthispointat1/2thelogichighlevel.
DISABLE-Istheconnectionfordisablingall4outputswitches.DISABLEhighoverridesallotherinputs.When
takenlow,everythingfunctionsnormally.AninternalpulluptoVccwillkeepDISABLEhighifpinleftopen.
PWM INPUT-IstheTTLcompatibledigitalinputforcontrollingthePWMpulsewidthofthebridge.Adutycycle
greaterthan50%willproducegreaterthan50%dutycyclepulsesoutoftheAout.Adutycyclelessthan50%
willproducegreaterthan50%dutycyclefromtheBout.Foranaloginputs,theintegrationcapacitorforthe
internalclockmustbeconnectedbetweenthispinandanalogground.Theinternalswitchingfrequencyisprogrammableupto125kHzbyselectionoftheintegrationcapacitor.Theformulais:
CF (pF) =
(
)
1.44 x107
– 50
Fsw
BYPASSING
Adequatebypassingofthepowersuppliesisrequiredforproperoperation.Failuretodosocancauseerraticand
low eficiency operation as well as excessive ringing at the outputs.The Vs supply should be bypassed with at
leasta1µFceramiccapacitorinparallelwithanotherlowESRcapacitorofatleast10µFperampofoutputcurrent.
Capacitortypesratedforswitchingapplicationsaretheonlytypesthatshouldbeconsidered.The1µFceramic
capacitormustbephysicallyconnecteddirectlytotheVsandPOWERGNDpins.Evenoneinchofleadlengthwill
causeexcessiveringingattheoutputs.Thisisduetotheveryfastswitchingtimesandtheinductanceofthelead
connection.ThebypassingrequirementsoftheVccsupplyarelessstringent,butstillnecessary.A.1µFto.47µF
ceramiccapacitorconnecteddirectlytotheVccandANALOGGNDpinswillsufice.
PCB LAYOUT
ThedesignerneedstoappreciatethattheSA160combinesinonecircuitbothhighspeedhighpowerswitchingand
lowlevelanalogsignals.Certainlayoutrulesofthumbmustbeconsideredwhenacircuitboardlayoutisdesigned
usingtheSA160:
1. Bypassingofthepowersuppliesiscritical.Capacitorsmustbeconnecteddirectlytothepowersupplypinswith
veryshortleadlengths(wellunder1inch).Ceramicchipcapacitorsarebest.
2. ConnectANALOGGNDtoPOWERGNDwithaconductorhavingnointermediateconnections.ConnectallVs
powersupply,ilterandloadrelatedgroundconnectionstoPOWERGNDkeepingtheseconductorsseparate
untilreachingpin6.ConnectallVccpowersupplyandinputsignalrelatedgroundconnectionstoANALOG
GNDkeepingconductorsseparateuntilreachingpin1.Donotallowgroundloopstoformbymakingadditional
groundconnectionsatthelowsideofthephysic
Therearetwoloadcurrentsensingpins,ISENSEAandISENSEB.ThetwopinscanbeshortedtoPOWERGND
inthevoltagemodeconnectionbutbothmustbeusedinthecurrentmodeconnection.ItisrecommendedthatR
SENSEresistorsbenon-inductive.WhenAOUTishighandBOUTislow,theloadcurrentlowsfromAOUTtoB
OUTandoutoftheISENSEBpin.WhenBOUTishighandAOUTislow,theloadcurrentlowsfromBOUTtoA
OUTandoutoftheINSENSEApin.TheSA160hasnointernalcurrentlimit.
TRANSIENT SUPPRESSION
AnRCnetworkofa100pFCapacitorandaoneohmresistorisrequiredasshownintheexternalconnectiondiagramonpage1.Thisnetworkassuresproperoperationundervariousloads.Minimalpowerisdissipatedinthe
resistor.
SA160U
7
SA160
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8
www.apexanalog.com
Copyright © Apex Microtechnology, Inc. 2012
(All Rights Reserved)
JUNE
2013
SA160U
SA160U REVB
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