DESCRIPTION
The ZXBM1017 is a Single-Phase, DC brushless motor
pre-driver with PWM variable speed control and
current limit features suitable for fans, blowers and
pump motors. Where the system dictates, this device
can be controlled via an external voltage, PWM signal
or thermistor.
FEATURES
Compliant with external PWM speed control
Compliant with thermistor control
Minimum speed setting
Low noise
Auto restart
Built in Hall amplifier
Speed pulse (FG) and lock rotor (RD) outputs
Current Limiting
Variable commutation delay
Up to 18V input voltage (60V with external regulator)
Small TSSOP20 package
Lead free product
APPLICATIONS
Mainframe and personal computer fans and blowers
Instrumentation fans
Central heating blowers
Automotive climate control
DEVICE MARKING
ZETEX
ZXBM1017
Date code
ZXBM1017
ISSUE 2 - OCTOBER 2005
VARIABLE SPEED SINGLE- PHASE BLDC MOTOR CONTROLLER
1
TSSOP20
DEVICE
REEL SIZE
TAPE
WIDTH
QUANTITY PER REEL
ZXBM1017ST20TC
13" (330mm)
16mm
2,500
ORDERING INFORMATION
1) Maximum allowable Power Dissipation, PD, is
shown plotted against Ambient Temperature,TA,
in the accompanying Power Derating Curve,
indicating the Safe Operating Area for the device.
2) Power consumed by the device, PT, can be
calculated from the equation:
PT = PQ + PPhHi + PPhLo + PTR + PHB + PFGRD
where
PQ is power dissipated under quiescent
current conditions, given by:
PQ = VCC x ICC
where Vcc is the maximum application
device Supply Voltage
and Icc is the maximum Supply Current
given in the Electrical Characteristics
and
PPhHi is power generated due to either one
of the phase outputs Ph1Hi or Ph2Hi being
active, given by:
PPhHi = IOL x VOL
where IOL is the maximum application
Ph1Hi and Ph2Hi output currents
and VOL is the maximum Low Level Output
Voltage for the Ph1Hi and Ph2Hi outputs
given in the Electrical Characteristics
and
PPhLo is power generated due to either one
of the phase outputs Ph1Lo or Ph2Lo being
active, given by:
PPhLo = IOH x (VCC - VOH)
where IOH is the maximum application
Ph1Lo and Ph2Lo output currents
and VCC is the maximum application device
Supply Voltage
and VOH is the minimum High Level Output
Voltage for the Ph1Lo and Ph2Lo outputs
given in the Electrical Characteristics.
and
PTR is power generated due to the Network
Reference source current, given by:
PTR = IOThRef x (VCC - VThRef)
where IOThRef is the maximum application
ThRef output current
and VCC is the maximum application device
Supply Voltage
and VThRef is the Network Reference
voltage
and
PHB is power generated due to the Hall Bias
source current, given by:
PHB = IHB x (VCC - VHB)
where IHB is the maximum application Hall
Bias output current
and VHB is the Hall Bias voltage
and
PFGRD is power generated due to either or
both the Frequency Generator and Locked
Rotor Detect outputs being active, given by:
PFGRD = IOL x VOL
where IOL is the maximum application FG
or RD output current
and VOL is the FG or RD Low Level Output
Voltage
ZXBM1017
ISSUE 2 - OCTOBER 2005
2
Parameter
Symbol
Limits
Unit
Supply Voltage
VCCmax
-0.6 to 20
V
Input Current
ICCmax
200
mA
Maximum Input Voltage
VImax
-0.6 to Vcc+0.5
V
Maximum Output Voltage
VOmax
-0.6 to Vcc+0.5
V
Power Dissipation
PDmax
800
mW
Operating Temp.
TOPR
-40 to 110
C
Storage Temp.
TSTG
-55 to 125
C
Absolute Maximum Ratings
ZXBM1017
ISSUE 2 - OCTOBER 2005
3
PARAMETER
SYMBOL
MIN.
TYP.
MAX. UNIT CONDITIONS
Supply
Voltage
V
CC
4.7
-
18
V
Current
I
CC
-
11
14.5
mA
No load
(1)
Hall connections
Hall Amp Input Voltage
V
IN
40
-
-
mV
diff p-p
Hall Amp Common Mode Voltage
V
CM
0.5
-
V
CC
-1.5
V
Hall Amp Input Offset
V
OFS
-
10
-
mV
Hall Amp Input Current
I
BS
-
-400
-650
nA
Hall Bias Voltage
V
HB
1.6
1.75
1.975
V
I
HB OUT
= -5mA
Hall Bias Output Current
I
HB
-
-
-10
mA
Output Drives
Ph1Lo, Ph2Lo Output High Voltage
V
OH
V
CC
-2.2 V
CC
-1.8
-
V
IOH =80mA Phase active
Ph1Lo, Ph2Lo Output Low Voltage
V
OLA
-
0.4
0.6
V
IOL = 32mA Phase active
Ph1Lo, Ph2Lo Output Low Voltage
V
OLB
-
0.4
0.6
V
IOL = 50 A Phase inactive
Ph1Lo, Ph2Lo Output Source Current
I
OH
-
-
-80
mA
Ph1Lo, Ph2Lo Output Sink Current
I
OL
-
-
32
mA
Ph1Hi, Ph2Hi Output Low Voltage
V
OLA
-
0.55
0.8
V
IOL = 100mA
Ph1Hi, Ph2Hi Output Sink Current
I
OL
-
-
100
mA
ELECTRICAL CHARACTERISTICS (at T
amb
= 25C and Vcc = 12V)
j-a = 110C/W
j-c = 36C/W
ZXBM1017
ISSUE 2 - OCTOBER 2005
4
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT CONDITIONS
PWM Oscillator
C
PWM
Charge Current
I
PWMC
-5.3
-
-9.1
A
C
PWM
Discharge Current
I
PWMD
55
-
105
A
C
PWM
High Threshold Voltage
V
THH
-
3
-
V
C
PWM
Low Threshold Voltage
V
THL
-
1
-
V
PWM Frequency
F
PWM
24
kHz
CPWM = 0.1nF
Reference Voltage
ThRef Voltage
V
ThRef
4.75
5.0
5.25
V
IOThRef = -10mA
ThRef Output Current
I
OThRef
-
-
-10
mA
Speed Control
SPD Voltage Minimum
V
SPDL
-
1
-
V
100% PWM Drive
SPD Voltage Maximum
V
SPDH
-
3
-
V
0% PWM Drive
SPD Input Current
I
ISPD
-
-0.4
-2
A
Vin = 2V
Minumum Speed Setting
S
MIN
Input Current
I
SMIN
-
-0.25
-0.5
A
Vin = 2V
Rotor Lock and Auto Restart
C
LCK
Charge Current
I
LCKC
-2.7
-
-5.2
A
C
LCK
Discharge Current
I
LCKD
0.2
-
0.42
A
C
LCK
High Threshold Voltage
V
THH
-
3
-
V
C
LCK
Low Threshold Voltage
V
THL
-
1
-
V
Lock condition On:Off ratio
-
1:12
-
Current Limit
Sense Input Current
I
Sense
-
-20
-100
nA
Vin = 1V, SetTh = 2V
SetTh Input Current
I
SetTh
-
-20
-100
nA
Vin = 2V, Sense = 1V
Output Flags
FG & RD Output Current
I
OL
-
-
16
mA
FG & RD Low Level Output Voltage
V
OL
-
-
0.5
V
IOL = 16mA
Commutation Delay
Commutation Delay
t
ComDel
48
-
112
s
ComDel Open Circuit
ELECTRICAL CHARACTERISTICS (at T
amb
= 25C and Vcc = 12V) (Cont.)
Notes:
(1.) Measured with pins H+, H-, CLCK and CPWM = 0V and all other signal pins open circuit.
(2.) In this data sheet a negative sign for a current indicates current flowing out of the pin whilst no sign indicates current flowing into the pin
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