ZXBM200XX10TC_技术文档

ZXBM2001

ZXBM2002 ZXBM2003

VARIABLE SPEED 2-PHASE FAN MOTOR CONTROLLER

DESCRIPTION

The ZXBM200x is a series of 2-phase, DC brushless m otor pre-drivers with PWM

variable speed control suitable for fan and blower m otors.

FEATURES

· Built in lock detect protection, rotational speed sensing and autom atic recovery

· Built in Hall am plifier allows direct connection to Hall elem ent

· PWM Speed control via

- External voltage

- Therm istor input

- External PWM source

· Speed (FG) pulse output – ZXBM2003

· Rotor lock output – ZXBM2002

· Com bined Rotor Lock (RD) and Speed (FG) signal – ZXBM2001

· Up to 18V input voltage (60V with external regulator)

· MSOP10 package

APPLICATIONS

· Mainfram e and Personal Com puter Fans and Blowers

· Instrum entation Fans

· Central Heating Blowers

· Autom otive clim ate control

ORDERING INFORMATION

DEVICE

REEL S IZE

7” (180m m )

13” (330m m )

TAPE WIDTH

12m m

QUANTITY PER REEL

ZXBM200xX10TA

ZXBM200xX10TC

1,000

4,000

12m m

Exam ple: ZXBM2001X10TA

DEVICE MARKING

ZXBM2001 or BM21

ZXBM2002 or BM22

ZXBM2003 or BM23

ISSUE 4 - OCTOBER 2004

1

S E M IC O N D U C T O R S

ZXBM2001

ZXBM2002 ZXBM2003

Absolute m axim um ratings

Pa ra m e t e r

S u p p ly Vo lta g e

S ym b o l

Lim it s

-0.6 to 20

200

Un it

V

CCm a x

In p u t Cu rre n t

I

m A

m W

ЊC

Po w e r Dis s ip a tio n 25°C

Op e ra tin g Te m p .

S to ra g e Te m p .

P

500

Dm a x

T

-40 to 85

-55 to 150

OPR

S TG

T

ЊC

Pow er Dissipation

1) Maxim um allowable Power Dissipation, P_D,

is shown plotted against Am bient Tem perature,

T_A, in the accom panying Power Derating Curve,

indicating the Safe Operating Area for the device.

2) Power consum ed by the device, P_T, can be

calculated from the equation:

P_T= P_Q+ P_Ph

where P_Qis power dissipated under quiescent

current conditions, given by:

P

_Q= V_CCx I_CC

where V_CCis the application

device Supply Voltage

and

I_CCis the m axim um Supply

Current given in the Electrical

Characteristics

and

P_Phis power generated due to either one of

the phase outputs Ph1 or Ph2 being

active, given by:

P_Ph= I_OLx V_OL

where

and

I_OLis the application Ph1 and Ph2

output currents

V_OLis the m axim um Low Level

Output Voltage for the Ph1 and

Ph2 outputs given in the Electrical

Characteristics

ISSUE 4 - OCTOBER 2004

2

S E M IC O N D U C T O R S

ZXBM2001

ZXBM2002 ZXBM2003

Electrical Characteristics (at T

= 25°C & V = 12V)

CC

am b

Pa ra m e t e r

S u p p ly Vo lta g e

S ym b o l

Min

Typ

Ma x

18

Un it

V

Co n d it io n s

V

4.5

CC

1

S u p p ly Cu rre n t

I

2.2

3.25

m A

m V

V

No Lo a d

CC

Ha ll Am p In p u t Vo lta g e

Ha ll Am p Co m m o n Mo d e Vo lta g e

Ha ll Am p In p u t Offs e t

Ha ll Am p Bia s Cu rre n t

PH1, PH2 Ou tp u t Hig h

40

d iff p -p

V

0.5

0.5V

±7

V

-1.5

CM

CC

V

m V

n A

V

OFS

V

-350

-1.8

BS

V

-2.2

V

I = 80m A

OH

CC

PH1, PH2 Ou tp u t Off Le a ka g e

Cu rre n t

I

Ϯ10

␮A

OFF

PH1, PH2 Ou tp u t Cu rre n t Hig h

I

-80

m A

V

OH

Lo ck/FG Ma xim u m Co lle cto r

Vo lta g e

V

CC

OH

Lo ck/FG S in k Cu rre n t

I

5

m A

V

OL

Lo ck/FG Lo w Le ve l O/P Vo lta g e

V

0.3

0.5

I

= 5m A

= 1.5V

OL

C

Ch a rg e Cu rre n t

I

-1.8

1:7

-2.8

0.28

1:10

2.0

␮A

V

LCK

LCKC

LCKD

in

Dis ch a rg e Cu rre n t

I

0.35

Lo ck co n d itio n On :Off ra tio

C

Hig h Th re s h o ld Vo lta g e

Lo w Th re s h o ld Vo lta g e

V

LCK

THH

V

1.0

LCK

THL

Ch a rg e Cu rre n t

I

3.6

50

4.3

5.0

75

␮A

V

= 1.5V

PWM

PWMC

PWMD

in

Dis ch a rg e Cu rre n t

I

62

in

PWM Fre q u e n cy

F

24

34

kHz

C

= 150p F

= 100p F

PWM

C

Hig h Th re s h o ld Vo lta g e

Lo w Th re s h o ld Vo lta g e

V

2.0

1.0

V

PWM

THH

V

THL

S PD

S PD Vo lta g e Co n tro l Ra n g e

S PD Op e n Circu it Vo lta g e

V

1

2

3

1.5

Notes:

1

Measured with pins H+, H-, C

and C

= 0V and all other signal pins open circuit.

PWM

LCK

2

3

The 1V m inim um represents 100% PWM drive and 2V represents 0% PWM drive.

This voltage is determ ined by an internal resistor network of 52.5k⍀ from the pin to Gnd and 19.5k⍀ from the pin to a 2V reference. Whilst both

resistors track each other the absolute values are subject to a ±20% m anufacturing tolerance

ISSUE 4 - OCTOBER 2004

3

S E M IC O N D U C T O R S

ZXBM2001

ZXBM2002 ZXBM2003

Block Diagram (ZXBM2001):

Pin Assignm ents

Top View

Pin Functional Descriptions

1. VCC - Applied voltage

2. H+

3. H-

- Hall input

This is the device supply voltage. For 5V to 12V fans this

can be supplied directly from the Fan Motor supply. For

fans likely to run in excess of the 18V m axim um rating

for the device this will be supplied from an external

regulator such as a zener diode.

The rotor position of the Fan Motor is detected by a Hall

sensor whose output is applied to these pins. This

sensor can be either a 4 pin ‘naked’ Hall device or a 3

pin buffered switching type. For a 4 pin device the

differential Hall output signal is connected to the H+

and H- pins. For a 3 pin buffered Hall sensor the Hall

device output is attached to the H+ pin whilst the H- pin

has an external potential divider attached to hold the

pin at half V_CC. When H+ is high in relation to H- Ph2 is

the active drive.

ISSUE 4 - OCTOBER 2004

4

S E M IC O N D U C T O R S

ZXBM2001

ZXBM2002 ZXBM2003

On the ZXBM2001 the Lock/FG pin is designed to be a

dual function pin to provide an indication of the Fans

rotational speed together with an indication of when

the Fan has failed rotating for whatever reason (Rotor

Locked condition). Under correct operating conditions,

and with the external pull-up in place, this pin will

provide an output signal whose frequency will be twice

that of the rotational frequency of the fan. Should the

fa n its e lf s to p ro ta tin g fo r a n y re a s o n , i.e . a n

obstruction in the fan blade or a seized bearing, then

the device will enter a Rotor Locked condition. In this

condition the Lock/FG pin will go high (regardless of

the state of the Hall sensor) when the C_LCKpin reaches

the V_THHthreshold and will rem ain high until the fan

blades start rotating again.

4. SPD

- Speed control voltage input

This pin provides control over the Fan Motor speed by

varying the Pulse Width Modulated (PWM) drive ratio

at the Ph1 and Ph2 outputs. This control signal can take

the form of either a voltage input of nom inal range 2V

to 1V, representing 0% to 100% drive respectively, or

alternatively a therm istor can be attached to this pin to

control the voltage. A third m ethod of speed control is

available by the application of an externally derived

PWM signal and this will be discussed under the C_PWM

pin.

This pin has an internal potential divider between an

internal 2.0V reference and Gnd (see Block Diagram )

designed to hold the pin at approxim ately 1.5V. This

will represent a drive of nom inally 50% PWM. For

therm al speed control a 100k NTC therm istor is

connected between the SPD and ground will provide a

drive nom inally 70% at 25°C and 100% at 50°C. As the

therm istor is connected in parallel with the internal

On the ZXBM2002 variant this pin is Lock. During

norm al operation the signal will be low and during a

Locked Rotor condition the pin will go high when the

C_LCKpin reaches the V_THHthreshold.

resistor the non-linearity of an NTC therm istor is For the ZXBM2003 variant this pin is FG. This signal is a

largely taken out. A linearity of typically ±2.5% is buffered and inverted output of the Hall signal and

achievable.

therefore provides an output signal whose frequency

will be twice that of the rotational frequency of the fan.

Lower values of therm istor can be used if needed and

in this situation an external potential divider will be

needed to set the speed range. This will take the form of

a resistor from the SPD pint to Vcc and a resistor from

the SPD pin to Gnd. Full details are given in the

ZXBM200x series Application Note.

7. C_LCK- Locked Rotor tim ing capacitor

When in a Locked Rotor condition as described above

the Ph1 and Ph2 drive outputs go into a safe drive m ode

to protect the external drive devices and the m otor

windings. This condition consists of driving the m otor

for a short period then waiting for a longer period

before trying again. The frequency at which this takes

place is determ ined by the size of the capacitor applied

to this CLCK pin. For a 12V supply a value of 1.0uF will

typically provide an ‘On’ (drive) period of 0.33s and an

‘Off’ (wait) period of 4.0s, giving an On:Off ratio of 1:12.

If speed control is not required this pin is can be left

open circuit for 50% drive or tied to ground by a 10k⍀

resistor to provide 100% drive.

If required this pin can also be used as an enable pin.

The application of a voltage of 2.0V to V_CCwill to force

the PWM drive fully off, in effect disabling the drive.

5. GND - Ground

The C_LCKtim ing periods are determ ined by the

following equations:

This is the device supply ground return pin and will

generally be the m ost negative supply pin to the fan.

V

^THH× C^LCK

(V^THH− V^THL) × C^LCK

T

lock

=

T

off

=

ILCKC

ILCKD

(V^THH− V^THL) × C^LCK

6. LOCK/ FG

- Locked Rotor error output /

Ton =

ILCKC

Frequency Generator (speed) output

Where V_THHand V_THLare the C_LCKpin threshold

voltages and I_LCKCand I_LCKDare the charge and

discharge currents.

This pin is an open collector output and so will require

an external pull up resistor for correct operation.

ISSUE 4 - OCTOBER 2004

5

S E M IC O N D U C T O R S

ZXBM2001

ZXBM2002 ZXBM2003

Locked Rotor tim ing capacitor (CONT).

C

T

PWM

=

+

I

PWMC PWMD

I

The C_PWMpin can also be used as in input for an

externally derived PWM signal to control the m otor

speed. The signal should have a VOL <1V and a VOH

>2V. A standard TTL or CMOS digital signal is ideal.

When driving from an external PWM source no

capacitor should be attached to the C_PWMpin and the

SPD pin should be left open circuit.

As these threshold voltages are nom inally set to

V

_THH=2V and V_THL=1V the equations can be sim plified

as follows:

2 × C^LCK

C

LCK

C

LCK

T

lock

=

T

on

=

T

off

=

ILCKC

ILCKD

8. C_PWM

- Sets PWM frequency

- external PWM input

9. PH2

- External transistor driver

10. PH1 - External transistor driver

This pin has an external capacitor attached to set the

PWM fre q u e n cy fo r th e Ph a s e d rive o u tp u ts . A These are the Phase drive outputs and are open

ca p a cito r va lu e o f 0.15n F w ill p ro vid e

frequency of typically 24kHz.

a

PWM darlington em itter followers designed to provide up to

80m A of drive to external transistors as shown in the

Application circuits following. The external transistors

The C_LCKtim ing period (T_pwm) is determ ined by the

in turn drive the fan m otor windings.

following equation:

(V^THH- V^THL) × C (V^THH− V^THL) × C

T

lock

=

+

IPWMC

IPWMD

Where T_PWMis in ␮s

C = C_PWM+15 in pF

I_PWM& I_PWMDare in ␮A

Where V_THHand V_THLare the C_PWMpin threshold

voltages and I_PWMCand I_PWMDare the charge and

discharge currents.

As these threshold voltages are nom inally set to

V_THH=2V and V_THL=1V the equations can be sim plified

as follows:

ISSUE 4 - OCTOBER 2004

6

S E M IC O N D U C T O R S

ZXBM2001

ZXBM2002 ZXBM2003

Lock & FG Tim ing Waveform :

Lock Tim ing Exam ple:

Using the equation previously described and to be

found under the C_LCKpin description:

2 × C^LCK

C

LCK

C

LCK

T

lock

=

T

on

=

T

off

=

ILCKC

ILCKD

Using a value of C_LCK= 1.0uF together with the values

o f I_LCKCa n d I_LCKDto b e fo u n d in th e Ele ctrica l

Characteristics we can derive the following tim ings for

operation at 12V and 25°C.

2 × 1.0␮F

2.8␮A

1.0␮F

T

lock

=

= 0.714s

2 × 1.0␮F

T

off

=

= 3.6s

0.28␮A

Figure 2

T

on

=

= 0.36s

TYPICAL APPLICATION (ZXBM2001) using MOSFET power transistors

2.8␮A

Figure 1

TYPICAL APPLICATION (ZXBM2001) using Bipolar power transistors

Graph 1

ISSUE 4 - OCTOBER 2004

7

S E M IC O N D U C T O R S

ZXBM2001

ZXBM2002 ZXBM2003

APPLICATION INFORMATION

Also illustrated in the two Applications circuits above

are the m ethods of connection for both a ‘naked’ Hall

device, as seen in the bipolar circuit in Figure 1, and a

buffered Hall device, as in the MOSFET circuit in Figure

2. In this latter circuit R5 & R6 bias the H- pin at a voltage

equivalent to half the swing of the Hall device. R7 will

be needed if the buffered Hall device does not have its

own internal pull-up.

This section gives a brief insight into applications using

the ZXBM200x series. More com plete data is available

in the ZXBM200x Series Applications Note, visit

www.zetex.com /zxbm or contact your nearest Zetex

office for full details.

The ZXBM200x series of 2-phase DC brushless m otor

pre-drivers are capable of driving both Bipolar or

MOSFET power transistors.

Graph 1 below, illustrates the PWM drive waveform

taken from and application using the MOSFET circuit in

Figure 2. This shows the waveform s to be found at the

Ph1 output and at the drain/Winding node.

For sm aller fans and blowers it is likely that bipolar

power transistors would be used as shown in the

following Applications circuit.

In Figure 1, R1 & R2 have their value selected to provide

suitable base current in keeping with the winding

current and gain of the power transistors Q1 & Q2. R3 &

R4 have their value selected to provide efficient

switch-off of Q1 & Q2. The Zener diodes ZD1 & ZD2

provide active clam ping in conjunction with Q1 & Q2.

It is also recom m ended that the supply de-coupling

capacitor C3 is positioned as close as is practical to the

ZXBM device pins.

In the case of higher power fans and blowers it m ay be

m ore applicable to use MOSFET devices to switch the

windings as illustrated in the second applications

circuit shown in Figure 2.

In Figure 2, the Resistor ratio of R1 to R3 and R2 to R4

provide the required Gate turn-on voltage whilst the

absolute values will be chosen to provide sufficient

gate switching currents.

ISSUE 4 - OCTOBER 2004

8

S E M IC O N D U C T O R S

ZXBM2001

ZXBM2002 ZXBM2003

When driving fans with bipolar transistors, at higher

voltages it m ay be necessary to provide extra noise

protection by the addition of a diode from the driver

collector to Gnd on each phase. This prevents negative

vo lta g e e xcu rs io n s fro m th e w in d in g s a ffe ctin g

operation. See Figure 3 right, showing the placem ent

of these diodes. It should be noted that these are not

required for the MOSFET solution in Figure 2 as the

diodes are inherent in the MOSFET structure.

Zetex provide a variety of suitable power transistors for

using with the ZXBM200x series of 2-phase DC

brushless m otor pre-drivers and suitable devices

sufficient for a range of applications are given in the

following table.

Figure 3

TYPICAL APPLICATION (ZXBM2001) illustrating addition of Clam p

diodes.

SUMMARY TABLE OF SUITABLE DEVICES

Bip o la r Typ e s

V

(V)

I

(A)

m in H @ I

V m a x(m V)

CE(s a t )

Pa cka g e

CEO

C

FE

C

@ I & I

C

B

FZT1053A

FZT851

75

60

4.5

300 @ 0.5A

100 @ 2A

100 @ 1A

300 @ 1A

200 @ 1A, 10m A

100 @ 1A, 10m A

175 @ 1A, 100m A

65 @ 0.5A, 50m A

100 @ 1A, 10m A

S OT223

S OT23-6

6

4

FZT853

100

150

50

FZT855

ZXT13N50DE6

MOS FET Typ e s

BV

(V)

I

(A)

I

(A)

R m a x(m

DS (o n )

)

Pa cka g e

DS S

D

PEAK

(Pu ls e d )

25

@ V

GS

2 3

ZXMN3A04DN8

30

60

7.6

5

20 @ 10V

45 @ 10V

140 @ 10V

600 @ 10V

S O8

2 3

ZXMN6A09DN8

17.6

10

1

ZXMN6A11Z

60

3.8

1.9

S OT89

S OT223

ZXMN6A11G

60

10

2 4

ZXMN10A11G

100

5.9

Notes:

1

2

3

4

Contact your nearest Zetex office for further details and technical enquiries.

Dual device

Provisional inform ation

Advanced inform ation

ISSUE 4 - OCTOBER 2004

9

S E M IC O N D U C T O R S

ZXBM2001

ZXBM2002 ZXBM2003

PACKAGE OUTLINE

PACKAGE DIMENSIONS

MILLIMETERS

DIM

INCHES

MIN.

MAX.

1.10

0.15

0.95

MIN.

MAX.

0.43

A

A1

A2

D

ᎏ

0.006

0.037

0.75

0.0295

3.00 BS C

0.118 BS C

E

4.90 BS C

3.00 BS C

0.1929 BS C

0.118 BS C

E1

b

0.17

0.27

0.23

0.0066 0.0106

c

0.08

0.003

0.009

e

0.50 BS C

0.0196 BS C

⍜

L

0Њ

15Њ

0Њ

15Њ

0.40

0.80

0.015

0.031

L1

0.95 BS C

0.037 BS C

Conform s to J EDEC MO-187 VARIATION BA

CONTROLING DIMENSIONS IN METRIC

APPROX. DIMENSION IN INCHES

Europe

Am ericas

Asia Pacific

Corporate Headquaters

Zetex Gm bH

Zetex Inc

Zetex (Asia) Ltd

Zetex Sem iconductors plc

Lansdowne Road, Chadderton

Oldham , OL9 9TY

Streitfeldstraß e 19

D-81673 München

Germ any

700 Veterans Mem orial Hwy

Hauppauge, NY 11788

USA

3701-04 Metroplaza Tower 1

Hing Fong Road, Kwai Fong

Hong Kong

United Kingdom

Telefon: (49) 89 45 49 49 0

Fax: (49) 89 45 49 49 49

europe.sales@zetex.com

Telephone: (1) 631 360 2222

Fax: (1) 631 360 8222

usa.sales@zetex.com

Telephone: (852) 26100 611

Fax: (852) 24250 494

asia.sales@zetex.com

Telephone (44) 161 622 4444

Fax: (44) 161 622 4446

hq@zetex.com

These offices are supported by agents and distributors in m ajor countries world-wide.

This publication is issued to provide outline inform ation only which (unless agreed by the Com pany in writing) m ay not be used, applied or reproduced

for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. The Com pany

reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service.

For the latest product inform ation, log on to www.zetex.com

ISSUE 4 - OCTOBER 2004

10

S E M IC O N D U C T O R S


型号：	ZXBM200XX10TC
厂家：	ZETEX SEMICONDUCTORS
描述：	VARIABLE SPEED 2-PHASE FAN MOTOR CONTROLLER 变速2相风机电机控制器风机电动机控制电机控制器
文件：	总10页 (文件大小：256K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ZXBM200XX10TC [ZETEX]

相关型号：

ZXBM5210

ZXBM5210-S-13

ZXBM5210-SP-13

ZXC

ZXC-116XJLB

ZXC-116XJLC

ZXC-116XJLD

ZXC-156XJLB

ZXC-156XJLC

ZXC-156XJLD

ZXC-255XJL

ZXC-255XJLB