ZXBM2004Q16TC_技术文档

ZXBM2004

VARIABLE SPEED 2-PHASE BLDC MOTOR CONTROLLER

DESCRIPTION

The ZXBM2004 is a 2-phase, DC brushless m otor pre-driver with PWM

variable speed control suitable for fan and blower m otors. The controller is

intended for applications where the fan or blower speed is controlled by an

external PWM signal, therm istor or DC voltage.

FEATURES

QSOP16

• Com pliant with external PWM speed control

• Com pliant with therm istor control

• Minim um speed setting

• Low noise

• Auto restart

• Built in hall am plifier

• Speed pulse (FG) and lock rotor (RD) outputs

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

• QSOP16 package

• Lead free product

Associated application notes:-

AN41 - Therm istor control

AN42 - External PWM control

AN43 - Interfacing to the m otor windings

APPLICATIONS

• Mainfram e and personal com puter fans and blowers

• Instrum entation fans

• Central heating blowers

• Autom otive clim ate control

ORDERING INFORMATION - QSOP16

REEL SIZE

TAPE WIDTH

QUANTITY PER REEL

2,500

DEVICE

13" (330m m )

12m m

ZXBM2004Q16TC

DEVICE MARKING

• ZETEX

ZXBM

2004

ISSUE 3 - MAY 2005

1

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

ZXBM2004

ABSOLUTE MAXIMUM RATINGS

PARAMETER

S YMBOL

LIMITS

-0.6 to 20

100

UNIT

V

S u p p ly vo lta g e

V

CCm a x

In p u t cu rre n t

I

m A

V

-0.5 to V +0.5

CC

In p u t vo lta g e

V m a x

IN

-0.5 to V +0.5

CC

V

Ou tp u t vo lta g e

Po w e r d is s ip a tio n

V

m a x

OUT

P

T

500

m W

ЊC

Dm a x

Op e ra tin g te m p .

S to ra g e te m p .

-40 to 110

-55 to 125

OPR

S TG

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

⍜j-a = 112°C/W

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 I_OLis the application Ph1 and Ph2

output currents

and

V_OLis the m axim um Low Level

Output Voltage for the Ph1 and

Ph2 outputs given in the Electrical

Characteristics

ISSUE 3 - MAY 2005

2

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

ZXBM2004

ELECTRICAL CHARACTERISTICS (at Tam b = 25°C & Vcc = 12V)

S YMBOL

MIN

TYP

MAX

UNIT CONDITIONS

PARAMETER

V

4.7

18

V

S u p p ly Vo lta g e

CC

1

I

5.5

7.5

m A No Lo a d

S u p p ly Cu rre n t

CC

V

40

m V d iff p -p

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

PH1, PH2 Ou tp u t Lo w

PH1, PH2 Ou tp u t S o u rce Cu rre n t

PH1, PH2 Ou tp u t S in k Cu rre n t

IN

V

0.5

Vcc-1.5

-710

V

CM

V

±7

m V

n A

OFS

I

-400

BS

V

-2.2

V

-1.8

V

I

=-80m A

=16m A

CC

OH

OL

OH

2

V

0.4

0.6

OLA

3

V

0.4

V

=50␮A

OLB

I

-80

16

m A

␮A

V

OH

I

OL

I

-4.5

-7.85

65

C

Ch a rg e Cu rre n t

PWMC

PWM

I

38

Dis ch a rg e Cu rre n t

PWMD

V

3

1

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

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

THH

V

THL

F

24

kHz

V

C

I

= 0.1n F

PWM Fre q u e n cy

Th Re f Vo lta g e

PWM

V

2.88

2.96

3.10

-1

=-100␮A

OTh Re f

Th Re F

I

m A

␮A

V

Th Re f Ou tp u t Cu rre n t

OTh Re f

I

-0.25

1

-0.3

V

= 2V,SPD=open

S

In p u t Cu rre n t

IN

IS MIN

MIN

V

100% PWM Drive

S PD Vo lta g e Min im u m

S PD Vo lta g e Ma xim u m

S PD In p u t Cu rre n t

S PDL

V

3

V

0% PWM Drive

S PDH

I

-0.8

-3.8

0.46

3

-2

␮A

V

= 2V

IN

IS PD

I

-2.8

C

Ch a rg e Cu rre n t

LCKC

LCK

I

0.54

Dis ch a rg e Cu rre n t

LCKD

V

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

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

THH

V

1

V

THL

1:12

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

FG & RD Low Level Output Current

FG & RD Low Level Output Voltage

Co m m u ta tio n d e a d tim e

I

5

m A

V

OL

V

0.5

I

= 5m A

OL

t

7.5

␮s

CD

Notes:

1. Measured with pins H+, H-, C_LCKand C_PWM= 0V and all other signal pins open circuit.

2. Measured when opposing Phase Output is Low

3. Measured when opposing Phase Output is High

4. In this datasheet a negative sign for a current indicates current flowing out of the pin whilst no sign indicates current flowing into the pin.

ISSUE 3 - MAY 2005

3

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

ZXBM2004

Block diagram

Pin assignm ents

1

Vcc

H+

H-

V+OP

Ph1

Ph2

N/C

FG

N/C

ZXBM2004

QSOP16

ThRef

SPD

C^PWM

S^MIN

Gnd

RD

CLCK

ISSUE 3 - MAY 2005

4

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

ZXBM2004

PIN FUNCTIONAL DESCRIPTION

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

The application of a voltage >3.0V will force the PWM

drive fully off, in effect disabling the drive.

H+ - Hall input

H- - Hall input

The rotor position is detected by a Hall sensor, with the

output applied to the H+ and H- pins. This sensor can be

either a 4 pin 'naked' Hall device or of the 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

buffered Hall sensor the Hall device output is attached

to the H+ pin, with a pull-up attached if needed, 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.

S_MIN- Sets Minim um Speed

A voltage can be set on this pin via a potential divider

between the ThRef and Gnd. This voltage is m onitored

by the SPD pin such that it cannot rise above it. As a

higher voltage on the SPD pin represents a lower speed

it therefore restricts the lower speed range of the fan. If

this feature is not required the pin is left tied to ThRef so

no m inim um speed will be set.

If the fan is being controlled from an external voltage

source onto the SPD pin then either this feature should

not be used or if it is required then a >1k⍀ resistor

should be placed in series with the SPD pin.

ThRef - Netw ork Reference

This is a reference voltage of nom inal 3V. It is designed

for the ability to 'source' and therefore it will not 'sink'

any current from a higher voltage.

C_PWM- Sets PWM Frequency

The current drawn from the pin by the m inim um speed

potential divider to pin S_MINand any voltage setting

network should not exceed 1m A in total at m axim um

tem perature.

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

capacitor value of 0.1nF will provide a PWM frequency

of typically 24kHz.

The C_PWMtim ing period (T_PWM) is determ ined by the

following equation:

SPD - Speed Control Input

The voltage applied to the SPD pin provides control

over the Fan Motor speed by varying the Pulse Width

Modulated (PWM) drive ratio at the Ph1Lo and Ph2Lo

outputs. The control signal takes the form of a voltage

input of range 3V to 1V, representing 0% to 100% drive

respectively.

(V_THH− V_THL) x C (V_THH− V_THL) x C

T_PWM

=

+

I_PWMC

I_PWMD

Where:

C = C_PWM+15, in pF

V_THHa n d V_THLa r e t h e C_{P W M}p in

threshold voltages

If variable speed control is not required this pin can be

left with an external potential divider to set a fixed

speed or tied to ground to provide full speed i.e. 100%

PWM drive.

I_PWMCand I_PWMDare the charge and

discharge currents in ␮A.

T_PWMis in m s

ISSUE 3 - MAY 2005

5

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

ZXBM2004

FG - Frequency Generator (speed) output

This is the Frequency Generator output and is a

buffered signal from the Hall sensor.

As these threshold voltages are nom inally set to V_THH

=

3V and V_THL= 1V the equations can be sim plified as

follows:

2C

This is an open collector drive giving an active pull

down with the high level being provided by an external

pull up resistor.

T_PWM

=

+

I_PWMCI_PWMD

C_LCK- Locked rotor tim ing capacitor

Ph1Lo & Ph2Lo - Driver

Should the fan stop rotating for any reason, i.e. an

obstruction in the fan blade or a seized bearing, then

the device will enter a Rotor Locked condition. In this

condition after a predeterm ined tim e (T_LOCK) the RD pin

will go high and the Phase outputs will be disabled.

After a further delay (T_OFF) the controller will re-enable

the Phase drive for a defined period (T_ON) in an attem pt

to re-start the fan. This cycle of (T_OFF) and (T_ON) will be

repeated indefinitely or until the fan re-starts.

This pair of outputs drive the external devices. These

outputs provide both the com m utation and PWM

waveform s. The outputs are of the Darlington em itter

follower type with an active pull-down to help faster

switch off when using bipolar devices. When in the

high state the outputs will provide up to 80m A of drive

into the base or gates of external transistors as shown

in the Typical Application circuit following.

When in the low state the active Phase drive is capable

of sinking up to 16m A when driving low to aid turn off

tim es during PWM operation. When the Phase is

inactive the output is held low by an internal pull-down

resistor.

GND - Ground

This is the device supply ground return pin and will

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

V+OP - Phase Outputs Supply Voltage

RD - Locked Rotor error output

This pin is the supply to the Phase outputs and will be

co n n e cte d d iffe re n tly d e p e n d a n t u p o n e xte rn a l

transistor type.

This pin is the Locked Rotor output as referred to in the

C

_LCKtim ing section above. It is high when the rotor is

stopped and low when it is running.

For bipolar devices this pin will be connected by a

resistor to the V_CCpin. The resistor is used to control

the current into the transistor base so its value is

chosen accordingly.

This is an open collector drive giving an active pull

down with the high level being provided by an external

pull up resistor.

For MOSFET devices the pin will connect directly to the

V_CCpin.

ISSUE 3 - MAY 2005

6

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

ZXBM2004

V_CC- Applied Voltage

This is the device internal circuitry 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.

RD Tim ing Waveform :

Hall

VTHH

CLCK

VTHL

TOn

TLock

TOff

RD

FG

Applications Inform ation

The ZXBM2004 is prim arily controlled by a voltage on A com m on form of control of fans is by a PWM signal

the SPD pin. A voltage of 1V represents a 100% PWM at derived from a central processor or controller. This

the Phase Outputs and in turn represents full speed. 3V signal can be converted into a voltage and that voltage

on the SPD pin conversely represents 0% PWM. The adjusted as neccesary to com pensate for m otor none

m otor can therefore be controlled sim ply by applying a linearity, inclusion of the Minim um speed feature etc.

control voltage onto the SPD pin with the m inim al use

of external com ponents.

Full applications details and further exam ples of how

to co n tro l th e ZXBM2004 a re a va ila b le in th e

This voltage control m ethod easily lends itself to Applications Notes AN41, AN42 and AN43.

co n tro l b y o th e r sig n a l typ e s. Fo r e xa m p le if a

therm istor is applied to the SPD pin a varying voltage

can be generated at the SPD pin as the resistance of the

therm istor varies with tem perature.

ISSUE 3 - MAY 2005

7

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

ZXBM2004

Figure 1: 12V Typical circuit for therm istor controlled speed

Figure 2: Typical circuit for external PWM controlled speed (single MOSFET)

ISSUE 3 - MAY 2005

8

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

ZXBM2004

Figure 3: Typical circuit for 48V input and external PWM control

Figure 4: Typical circuit for constant speed operation

ISSUE 3 - MAY 2005

9

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

ZXBM2004

Drive transisitors

Zetex offers a range of devices that are ideally suited to

interface between the ZXBM2004 controller and the

m otor. The following tables show a selection of

products. If your needs are not covered by this

s e le c t io n t h e n p le a s e r e fe r t o t h e t h e m o r e

com prehensive listings that can be found on the Zetex

website: w w w .zetex.com

MOSFETs

Po la rit y

BV

I

R

@ V = 10

GS

Pa cka g e

Pa rt Nu m b e r

DS S

D

DS (o n )

V

A

7.7

2.4

2.1

1.4

11.2

4.7

3.2

2.2

N

100

60

0.085

0.35

0.25

0.7

DPAK

S OT223

S O8

ZXMN10A09K

ZXMN10A11G

ZXMN10A08DN8

ZXMN10A07Z

ZXMN6A09K

ZXMN6A25DN8

ZXMN6A11Z

2 x N

N

S OT89

DPAK

S O8

N

0.045

0.055

0.14

0.3

2 x N

N

60

S OT89

N

60

ZXMN6A07Z

Bipolar Transistors

Po la rit y

V

I

V

@ I / I

B

Pa cka g e

Pa rt Nu m b e r

CEO

V

C

CE(s a t )

C

A

4

1

6

1

3

6

1

3

2

m V @ A/ m A

65 @ 0.5/50

150 @ 0.5/50

125 @ 2/100

300 @ 0.5/50

200 @ 1/10

135 @ 2/50

500 @ 1/50

260 @ 2/50

220 @ 2/50

NPN

150

125

100

75

S OT223

S OT23

S OT223

S OT89

S OT223

S OT89

S OT23

FZT855

FMMT624

ZX5T853G

FCX493

FCX1053A

ZX5T851G

FCX493A

FCX619

60

50

FMMT619

ISSUE 3 - MAY 2005

10

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

ZXBM2004

Notes:

ISSUE 3 - MAY 2005

11

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

ZXBM2004

PACKAGE OUTLINE QSOP16

PACKAGE DIMENSIONS

Dim

Millim e t e rs

In ch e s

Min .

0.053

0.004

0.049

0.189

Ma x.

0.069

0.010

0.059

0.197

Min .

Ma x.

1.75

0.25

1.50

5.00

A

A1

A2

D

1.35

0.10

1.25

4.80

0.009 Re f

0.228

0.23 BS C

ZD

E

0.244

0.157

0.050

5.79

3.81

0.41

6.20

3.99

1.27

E1

L

0.150

0.016

e

0.025 BS C

0.64 BS C

b

0.008

0.007

0°

0.012

0.010

8°

0.20

0.18

0°

0.30

0.25

8°

c

θ

h

0.010

0.020

0.25

0.50

Note: Dim ensions in inches are control dim ensions, dim ensions in m illim eters are approxim ate.

Europe

Am ericas

Asia Pacific

Corporate Headquaters

Zetex Gm bH

Zetex Inc

Zetex (Asia) Ltd

Zetex Sem iconductors plc

Zetex Technology Park,

Chadderton, Oldham , OL9 9LL

United Kingdom

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

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 w w w .zetex.com

ISSUE 3 - MAY 2005

12

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


型号：	ZXBM2004Q16TC
厂家：	DIODES INCORPORATED
描述：	VARIABLE SPEED 2-PHASE BLDC MOTOR CONTROLLER 变速2三相BLDC电机控制器运动控制电子器件信号电路光电二极管电动机控制电机控制器
文件：	总12页 (文件大小：211K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ZXBM2004Q16TC [DIODES]

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