Diodes AM4406 User Manual

Data Sheet

2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F

General Description

The AM4406/4406F are 2-phase, half-wave motor pre­drivers fabricated for fan motors. These ICs are
equipped with lock shutdown and automatic restart
functions. The lock shutdown function turns off the
output current when the motor is under lock condition.
And when the motor is unlocked, the ICs will automat­ically restart and allow DC fan to run.

In addition, the AM4406 and AM4406F have RD and
FG functions respectively. The RD function is to detect
the motor status and FG function enables frequency
generation.

The AM4406/4406F are available in SOIC-8 package.

Features

· Hall Inputs with a Hysteresis

· Lock Shutdown and Automatic Restart

· Rotation Detection (RD) Output

· Frequency Generation (FG) Output

· Supply Voltage: 4 to 28V

· Output Current: 70mA Max.

o

· Operating Temperature: -40 to 95

C

Applications

· High Voltage, High Current Brushless DC Fan

· Power Supply and Switchboards

· Communications Facilities

· Industrial Equipment

SOIC-8

Figure 1. Package Type of AM4406/4406F

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Data Sheet

2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F

Pin Configuration

M Package

(SOIC-8)

VCC

HS (+)

RD/FG

HS (-)

Figure 2. Pin Configuration of AM4406/4406F (Top View)

1

2

3

4

OUT1

8

OUT2

7

CT

6

GND

5

Pin Description

Pin Name Function

Pin Number

AM4406 AM4406F

1 VCC VCC Power supply

2 HS (+) HS (+) Hall input (+)

3 RD FG Rotation detection/Frequency generation

4 HS (-) HS (-) Hall input (-)

5 GND GND Ground

6 CT CT Timing capacitor

7 OUT2 OUT2 Driver output 2

8 OUT1 OUT1 Driver output 1

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Data Sheet

2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F

Functional Block Diagram

VCC

HS (+)

RD/FG

HS (-)

1

Reg

2

3

4

Hall

Amp

Lock

Detector

Control Logic

Automatic

Restart

Pre-driver 1

Pre-driver 2

Comparator

Comparator

8

OUT1

7

OUT2

6

CT

5

GND

Figure 3. Functional Block Diagram of AM4406/4406F

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Data Sheet

2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F

Ordering Information

AM4406 -

E1: Lead Free

Circuit Type

Blank: AM4406
F: AM4406F

G1: Green

TR: Tape and Reel

Blank: Tube

Package
M: SOIC-8

Package

SOIC-8

BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with
"G1" suffix are available in green packages.

Temperature

Range

o

-40 to 95

C

Lead Free Green Lead Free Green

AM4406M-E1 AM4406M-G1 AM4406M AM4406M-G1 Tube

AM4406MTR-E1 AM4406MTR-G1 AM4406M AM4406M-G1 Tape & Reel

Part Number Marking ID

AM4406FMTR-G1 AM4406FM-G1 Tape & Reel

Packing

Typ e

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Data Sheet

2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F

Absolute Maximum Ratings (Note 1)

Parameter Symbol Value Unit

Supply Voltage V

Output Current I

Power Dissipation P

Storage Temperature Range T

CC

OUT

D

STG

30 V

70 mA

550 (Note 2) mW

-55 to 125

o

C

ESD (Human Body Model) ESD 3000 V

ESD (Machine Model) ESD 300 V

Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device.
These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated
under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods
may affect device reliability.

Note 2: Reduced by 5.5mW/

o

C when TA is over 25oC.

Recommended Operating Conditions

Parameter Symbol Min Max Unit

Supply Voltage V

Hall Input Voltage (+) (Note 3) V

HS

Hall Input Voltage (-) (Note 3) V

Operating Temperature T

CC

(+) 1.0 VCC-0.5 V

(-) 1.0 VCC-0.5 V

HS

A

4 28 V

-40 95

o

C

Note 3: Hall input voltage range includes the amplitude of signal.

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Data Sheet

2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F

Electrical Characteristics

(VCC=12V, TA=25oC, unless otherwise specified.)

Parameter Symbol Conditions Min Typ Max Unit

Supply Current

Hall Amplifier Input Hysteresis (+)

Hall Amplifier Input Hysteresis (-)

CT Charge Current

CT Discharge Current

CT Charge and Discharge Ratio

CT Clamp Voltage

CT Comparator Voltage

OUT1 High Level Voltage

OUT2 High Level Voltage

RD Output Low Level Voltage

RD Current Capacity

FG Output Low Level Voltage

FG Current Capacity

I

V

HYS

CC

No load 3.2 5.0 mA

(+) Zero to peak including offset

and hysteresis

(-) Zero to peak including offset

V

HYS

and hysteresis

I

I

R

V

V

V

V

V

I

V

I

CHG

DHG

CD

CL

CP

OH1

OH2

RDL

RD

FGL

FG

VCT=1.5V

VCT=1.5V

I

/ I

CHG

DHG

I

=10mA

OUT1

I

=10mA

OUT2

IRD=5mA

VRD=2V

IFG=5mA

VFG=2V

315mV

-3 -15 mV

2 3.45 5.25 µA

0.35 0.8 1.45 µA

34.5 8

2.2 2.6 3 V

0.4 0.6 0.8 V

10 10.5 V

10 10.5 V

0.2 0.5 V

818 mA

0.2 0.5 V

818 mA

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Data Sheet

2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F

Typical Performance Characteristics

6.0

5.5

5.0

4.5

4.0

Supply Current (mA)

3.5

3.0

2.5
0 5 10 15 20 25 30

No Load

Supply Voltage (V)

12.0

11.6

11.2

10.8

Output Voltage (V)

10.4

10.0
0 20406080100

Output Current (mA)

Figure 4. Supply Current vs. Supply Voltage Figure 5. Output Voltage vs. Output Current

50

VCC=12V

40

2.5

VCC=12V

2.0

VCC=12V

30

20

RD/FG Current (mA)

10

0

04812

RD/FG Supply Voltage (V)

Figure 6. RD/FG Current vs. RD/FG Supply Voltage

1.5

1.0

RD/FG Low Voltage (V)

0.5

0.0

048121620

RD/FG Current (mA)

Figure 7. RD/FG Low Voltage vs. RD/FG Current

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Data Sheet

2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F

Typical Performance Characteristics (Continued)

800

700

600

500

400

300

Power Dissipation (W)

200

100

0

0 20406080100120

Ambient Temperature (OC)

Package: SOIC-8

95

Figure 8. Power Dissipation vs. Ambient Temperature

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Data Sheet

2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F

Operating Diagram

Hall Input

ON

Motor Output

OFF

CT

Motor Locked

Motor Lock Detected

High

T

T

ON

OFF

Motor Lock

Cleared

Reverts to normal operation

RD

FG

Note 4: Automatic restart is performed in the following manner. A motor lock condition is detected when the hall signal stops
switching. The output is ON when CT pin is being charged. C2 is the external capacitor of the CT pin. Output ON time and
OFF time are determined by the capacitance of C2.
Note 5: RD pin is ON during normal operation, and OFF when the motor is locked. It is an open collector output pin.

CPCL

)(*

−

ON

=

T

=

T

OFF

VV2C

CHG

I

−

VV2C

DHG

I

.)(

Sec

CPCL

)(*

.)(

Sec

Note 6: The RD pin may maintain HIGH level for a few hundred milliseconds when the power is turn on.

Power

RD

A few hundred milliseconds

Figure 9. Control Timing Diagram of AM4406/4406F

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Data Sheet

2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F

Typical Application

D2

V

CC

+

C1

Note 7: VRD should be equal or smaller than VCC.

D1

R1

Hall

Element

R2

Figure 10. Typical Application of AM4406/4406F

C2

VCC

HS (+)

AM4406/

AM4406F

HS (-)

CT

GND

OUT1

OUT2

RD/FG

R4

V

RD

R6

L1

Q1

(Note 7)/V

L2

Z11

Z1N

R5

FG

RD/FG Output

Q2

Z21

Z2N

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Data Sheet

2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F

Mechanical Dimensions

SOIC-8 Unit: mm(inch)

1.000(0.039)

4.700(0.185)

5.100(0.201)

7

°

7

°

1.270(0.050)

TYP

0.100(0.004)

0.300(0.012)

1.350(0.053)

1.750(0.069)

0.675(0.027)

0.725(0.029)

R0.150(0.006)

3.800(0.150)

4.000(0.157)

0.320(0.013)

°

8

°

8

D

2

0

°
°

8

D

1

:

0

5.800(0.228)

6.200(0.244)

0.800(0.031)

0.200(0.008)

0.330(0.013)

0.510(0.020)

0.190(0.007)

0.250(0.010)

0.900(0.035)

1°
5°

0.450(0.017)

0.800(0.031)

)

6

0

0

.

(

0

0

5

1

.

0

R

Note: Eject hole, oriented hole and mold mark is optional.

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