Diodes ZXBM1016 User Manual

ZXBM1016

V

CC

H+

H-

C

PWM

C

LCK

SPD

C3C2

C1

1μF

100pF 0.47μF

0V

FG

0.1μF

ThRef

S

MIN

Ph1Lo

Ph2Lo

Gnd

C

INT

Q1-4

W1

470Ω

R2

470Ω

ZXMC

3A17DN8

FG

Ph1Hi

Ph2Hi

R1

R5

R3

R4

R6

100Ω

1kΩ

C6

2.2μF

12V

D1

1N4148

D2

1N4004

SetTh

Sense

CONTROL

C4

R18

10kΩ

R15

R13

R12

R14

R17

R16

1kΩ

4.7kΩ

1kΩ

47kΩ

Q5

Q6

R10

16kΩ

R9 12kΩ

Hall

R8 470Ω

R7

33kΩ

Rsense

0.1Ω

33

44

5 & 6

7 & 8 7 & 8

2

11

Range

H-Bias

C5

0.47μF

SetThRef

R11

220kΩ

TSSOP20

High efficiency variable speed single-phase fan motor controller

Description

The ZXBM1016 is a high efficiency, low noise, single-phase, DC brushless motor pre-driver with PWM variable speed control and current control suitable for fan and blower motors. High efficiency and low noise are achieved using a novel technique (patent pending) for commutation current control.

The controllers are primarily intended to meet industry standard OEM fan specifications where external PWM control are applied, however, they can also be used with other thermal control techniques using an external voltage, PWM signal or thermistor.

Features

• Compliant with external PWM speed control

• Compliant with thermistor control

• Minimum speed setting

• High efficiency utilizing tail-end current control

•Low noise

•Auto restart

• Built in Hall amplifier

• Hall bias

• Speed pulse (FG) output

• Integrated current control

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

• Small TSSOP20 package

Applications circuit

Applications

• Mainframe and personal computer fans and blowers

• Instrumentation fans

• Central heating blowers

• Automotive climate control

Ordering information - TSSOP20

Device Reel size

(inches)

ZXBM1016ST20TA 7 (180mm) 16 1000 ZXBM1016ST20TC 13 (330mm) 16 2,500

Device marking

ZETEX ZXBM1016 Date code

Issue 1 - February 2007 1 www.zetex.com

Tape width

(mm)

Quantity

per reel

ZXBM1016

Absolute maximum ratings

Parameter Symbol Limits Unit

Supply voltage V

Input current I

Maximum input voltage V

Maximum output voltage V

Power dissipation P

Operating temperature T

Storage temperature T

CCmax

Imax

Omax

Dmax

OPR

STG

-0.6 to 20 V

200 mA

-0.6 to VCC+0.5 V

800 mW

-40 to 85 °C

-55 to 125 °C

Electrical characteristics (at T

= 25°C and VCC = 12V unless otherwise stated)

amb

Parameter Symbol Min. Typ. Max. Unit Conditions

Supply

Supply voltage V

Supply current I

CC

6.7 18 V For valid ThRef

15 20 mA

= 12V, no load

V

CC

Hall connections

Hall amp input voltage V

Hall amp common mode voltage

Hall amp input hysteresis V

Hall amp input current I

Hall bias voltage V

Hall bias output current I

V

IN

CM

OFS

BS

HB

40 mV diff p-p

0.5 VCC-1.5 V

12 mV

700 1000 nA

1.5 1.75 1.95 V I

HBout

-10 mA

= -5mA

Reference voltage

ThRef voltage V

ThRef output current I

PWM oscillator

C

charge current I

PWM

discharge current I

C

PWM

high threshold voltage V

C

PWM

low threshold voltage V

C

PWM

PWM frequency F

ThRef

OThRef

PWMC

PWMD

THH

THL

PWM

4.75 5.0 5.25 V I

-10 mA

-5.3 -7 -9.2 ␮A

50 75 100 ␮A

3V

1

V

25 kHz C

OThRef

PWM

=-10mA

= 0.1nF

Speed control

SPD voltage minimum V

SPD voltage maximum V

SPD input current I

SPDL

SPDH

ISPD

1 V 100% PWM drive

3 V 0% PWM drive

0.8 2 ␮AVIN = 2V

Minimum speed setting

input current I

S

MIN

ISMIN

-0.25 -0.5 ␮AVIN = 2V

(*)

Issue 1 - February 2007 2 www.zetex.com

ZXBM1016

NOTES:

Parameter Symbol Min. Typ. Max. Unit Conditions

Tail-end current control

Range pin input current setting range

Range pin input voltage V

charge current - lock I

C

LCK

C

charge current - run I

LCK

discharge current - lock I

C

LCK

C

high threshold voltage V

LCK

low threshold voltage V

C

LCK

input current - lock I

C

INT

C

charge current - run I

INT

discharge current - run I

C

INT

Current limit

SetThRef output voltage

SetThRef output current I

Sense input current I

SetTh input current I

Output drives

Ph1Lo, Ph2Lo output high voltage

Ph1Lo, Ph2Lo output low voltage

Ph1Lo, Ph2Lo output source current

Ph1Lo, Ph2Lo output sink current

Ph1Hi, Ph2Hi output low voltage

Ph1Hi, Ph2Hi output sink current

Ph1Hi, Ph2Hi off output leakage current

Output flag

FG output current I

FG low level output voltage V

I

Range

IN

LCKCL

LCKCR

LCKDL

THH

THL

INTCL

INTCR

INTDR

V

SetThRef

Sense

SetTh

V

OH

V

OLA

V

OLB

I

OH

I

OL

V

OLA

I

OL

I

OFF

OL

4 50␮A

0.50 0.65 0.75 V Input current = 20␮A

-0.75 -1.42 -1.8 ␮A

-(4xI

) ␮A Run mode

Range

0.8 0.8 1.25 ␮A

Lock mode, V

5V

1 V Lock mode

-50 300n nA

Lock mode, V

-1 mA Run mode

ThRef-

0.5V

0.8xI

ThRef-

0.25V

Range

␮A Run mode

VI

SetThRef

=200␮A

-200 ␮A

-20 -100 nA VIN=1V, SetTh=2V

-20 -100 nA VIN=2V, sense=1V

V

2.2

V

CC–

1.8 V IOH =80mA

CC–

0.4 0.6 V

I

OL

I

OL

=16mA

=50␮A

-80 mA

80 mA

0.5 0.75 V IOL =100mA

100 mA

±100 nA

16 mA

0.5 V IOL = 16mA

(†)

(‡)

CLCK

= 2.5V

(*) Measured with pins H+, H-, C (†) Measured when opposing phase output is low. (‡) Measured when opposing phase output is high.

LCK

and C

= 0V and all other signal pins open circuit.

PWM

Issue 1 - February 2007 3 www.zetex.com

Block diagram

ThRef

CPWM

PWM

Osc

Vcc

Vref

Phase Drive

Ph1 Hi

Ph2 Hi

ZXBM1016

Vcc

V

SPD

Control Voltage

SPD

SMIN

CLCK

Range

CINT

H-Bias

Hall

Pin assignments

H+

Vcc

Set Min

Speed

Locked

Rotor

Detect

Speed Detect

H-

Hall Amp

Vcc

Start-up

Tail-end Control

1

Hall

Bias

Gnd

Phase Drive & Control

Current Monitor

Speed & Lock Detect

Vcc

H+

H-Bi as

H-

ThRef

SPD

S

PWM

C

LCK

MIN

ZXBM1016

TSSOP20

Range

Ph2Hi

Ph1Lo

Ph2Lo

Ph1Hi

SetThRef

Sense

SetTh

FG

C

INT

Gnd

Ph1 Lo

Ph2 Lo

SetThRef

Sense

SetTh

Vcc

FG

Issue 1 - February 2007 4 www.zetex.com