Diodes ZXBM2003 User Manual

ZXBM2001 ZXBM2002 ZXBM2003

VARIABLE SPEED 2-PHASE FAN MOTOR CONTROLLER

DESCRIPTION

The ZXBM200x is a series of 2-phase, DC brushless motor pre-drivers with PWM variable speed control suitable for fan and blower motors.

FEATURES

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

· Built in Hall amplifier allows direct connection to Hall element

· PWM Speed control via

- External voltage

- Thermistor input

- External PWM source

· Speed (FG) pulse output – ZXBM2003

· Rotor lock output – ZXBM2002

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

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

· MSOP10 package

APPLICATIONS

· Mainframe and Personal Computer Fans and Blowers

· Instrumentation Fans

· Central Heating Blowers

· Automotive climate control

ORDERING INFORMATION

DEVICE REEL SIZE TAPE WIDTH QUANTITY PER REEL

ZXBM200xX10TA 7” (180mm) 12mm 1,000 ZXBM200xX10TC 13” (330mm) 12mm 4,000

Example: ZXBM2001X10TA

DEVICE MARKING

ZXBM2001 or BM21 ZXBM2002 or BM22 ZXBM2003 or BM23

ISSUE 4 - OCTOBER 2004

SEMICONDUCTORS

ZXBM2001 ZXBM2002 ZXBM2003

Absolute maximum ratings

Parameter Symbol Limits Unit

Supply Voltage V Input Current I Power Dissipation 25°C P Operating Temp. T Storage Temp. T

Power Dissipation

1) Maximum allowable Power Dissipation, PD, is shown plotted against Ambient Temperature, T

, in the accompanying Power Derating Curve,

indicating the Safe Operating Area for the device.

CCmax

Dmax

OPR

STG

-0.6 to 20 V 200 mA 500 mW

-40 to 85 ⬚C

-55 to 150 ⬚C

2)Power consumed by the device, P

, can be

calculated from the equation:

= PQ+ P

where PQis power dissipated under quiescent

current conditions, given by: P

= VCCx I

where VCCis the application

device Supply Voltage

and I

is the maximum Supply

Current given in the Electrical Characteristics

and P

is power generated due to either one of

the phase outputs Ph1 or Ph2 being active, given by:

= IOLx V

where IOLis the application Ph1 and Ph2

output currents

and V

is the maximum Low Level

Output Voltage for the Ph1 and Ph2 outputs given in the Electrical Characteristics

SEMICONDUCTORS

ISSUE 4 - OCTOBER 2004

ZXBM2001 ZXBM2002 ZXBM2003

Electrical Characteristics (at T

= 25°C & VCC= 12V)

amb

Parameter Symbol Min Typ Max Unit Conditions

Supply Voltage V Supply Current I

4.5 18 V

2.2 3.25 mA No Load Hall Amp Input Voltage 40 mV diff p-p Hall Amp Common Mode Voltage V Hall Amp Input Offset V Hall Amp Bias Current V PH1, PH2 Output High V PH1, PH2 Output Off Leakage

Current PH1, PH2 Output Current High I Lock/FG Maximum Collector

Voltage Lock/FG Sink Current I Lock/FG Low Level O/P Voltage V C

Charge Current I

LCK

Discharge Current I

LCK

OFS

OFF

LCKC

LCKD

0.5 0.5V

VCC-1.5 V

±7 mV

-350 nA

VCC-2.2 VCC-1.8 V IOH= 80mA

⫾10 ␮A

-80 mA

5mA

0.3 0.5 V IOL= 5mA

-1.8 -2.8 ␮AVin= 1.5V

0.28 0.35 ␮AVin= 1.5V Lock condition On:Off ratio 1:7 1:10 C

High Threshold Voltage V

LCK

Low Threshold Voltage V

LCK

Charge Current I

PWM

Discharge Current I

PWM

PWM Frequency F

High Threshold Voltage V

PWM

Low Threshold Voltage V

PWM

SPD Voltage Control Range V

THH

THL

PWMC

PWMD

PWM

THH

THL

SPD

3.6 4.3 5.0 ␮AVin= 1.5V 50 62 75 ␮AVin= 1.5V

12V2

2.0 V

1.0 V

24 34

kHz kHz

2.0 V

1.0 V

C C

PWM PWM

SPD Open Circuit Voltage 1.5 V 3

= 150pF = 100pF

Notes: 1

Measured with pins H+, H-, C

The 1V minimum represents 100% PWM drive and 2V represents 0% PWM drive.

This voltage is determined 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% manufacturing tolerance

LCK

and C

= 0V and all other signal pins open circuit.

PWM

ISSUE 4 - OCTOBER 2004

SEMICONDUCTORS

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