HA13605A

Three-Phase Brushless Motor Driver

ADE-207-201A (Z)

2nd. Edition

February, 1998

Description

The HA13605A is a three-phase brushless motor driver IC that provides digital speed control on chip. It
was developed for use as the drum motor driver in plain paper copiers and has the following functions and
features.

Functions

Three-phase output circuit that can provide a maximum of 4.5 A at 35 V per phase

Digital speed control

Crystal oscillator circuit (10 MHz maximum)

FG amplifier

Speed monitor (lock detection output)

Current control circuit

Overvoltage protection circuit (OVSD)

Thermal protection circuit (OTSD)

Low voltage protection circuit (LVI)

Forward/reverse switching circuit

Features

High breakdown voltage, large currents

Direct PWM drive outputs

Employs DMOS

Low on resistance: 0.7

/DMOS maximum

No lower arm flywheel diode is required

HA13605A

Pin Description

Pin No.

Pin Name

Function

Power supply

UOUT

U phase output

BOOSTL

Booster pin. (Low side)

VOUT

V phase output

RNF

Output current detection

WOUT

W phase output

BOOSTH

Booster pin. (High side)

UIN

U phase input

VR1

Charge pump reference voltage pin.

VIN

V phase input

Output current control voltage input pin.

WIN

W phase input

C-PMP

Charge pump output pin. Speed error integration and phase compensation
of speed control.

FGIN-

FG Amp. (-) input pin

FGOUT

FG Amp. output pin

FGIN+

FG Amp. (+) input pin

DIR

Direction, Rotation direction set up pin

PWMOSC

PWM oscillator input pin. Set oscillator frequency.

DSEL

Divide select pin (L : 1/3, M : 1/12, M : 1/6)

OSCOUT

Oscillator output

READY

Ready pin. Speed monitor pin. (open-collector)

OSCIN

Oscillator input

GND

Ground

HA13605A

Block Diagram

C110

Reference

voltage

Booster

Phase

switching

logic

Control

logic

Pre-

driver

Current
limiter

Filter

FG detector

Noise

filter

Speed

monitor

Divider D

Discriminator

2048

Charge

pump

READY
(open
collector)

Clamping

circuit

D switching

L: 1/3
M:1/12
H: 1/6

(

5 V)

TAB

OUT

C108

X'tal

R108

OSC

C107

1/24 fc

23 k

20 k

23 k

REF

PWM

OSC

R104

C106

C105

R103

R106

R105

5 V

DIR

LVI

OTSD

OVSD

200 k

(typ.)

5.6 V

R102

C103

C102

C101

R101

C104

C109

R107

5 V

HA13605A

External Components

Part No.

Recommended Value Purpose

Notes

R1, R2

Integration constants

R101, R102

Hall bias

R103, R104

FG amplifier gain setting

2, 8

R105, R106

10 k

Used in interfacing

R107

4.7 k

Booster stabilization

R108

Oscillator feedback resistor

Current detection

C1, C2

Integration constants

C101, C102, C103

0.047

Stabilization

C104

0.1

Power supply bypass

C105

Determines the FG amplifier band

C106

FG amplifier AC coupling

C107, C108

Oscillator circuit elements

C109

300 pF

Booster capacitance

C110

Stabilization

PWM oscillator time constant

X'tal

CLK oscillator

D1, D2, D3

Regenerative current path

Used in interfacing

Notes: 1. Use the following formulas to determine target values for these constants.

(rad/s)

R2
R1

7.7J

NoRmVosc

(2Vps 0.83V

)

3.0 k

15 k

C1 =

(F)

C2 = 10C1

(F)

Where:

Control loop angular frequency

FG frequency

(Hz)

Moment of inertia of the motor

(kg·m

)

No:

Rotation speed

(rad/s)

Rm:

Motor coil resistance

(

/T·T)

Torque constant

(N·m/A)

Motor reverse voltage at speed No

/T·T)

Vps: Power supply voltage

(V)

Vosc: PWM oscillator amplitude

2.2 (V

: See the electrical characteristics table.)

HA13605A

Charge pump reference voltage

5.6 (V: See the electrical characteristics table.)

2. The voltage gain (Gfg) of the FG amplifier is determined by the following formula. Here Rfgf is

the internal feedback resistance. See the electrical characteristics table.

However, note that R103 must be equal to R104.

Gfg =

Rfgf

R103

3. The output current limit is given by the following formula.

Iomax =

-- 25 mV)

Rnf

(A)

4. The PWM carrier frequency is determined by the following formula. Here VR1 and K are the

charge pump voltage and the oscillator amplitude (see the electrical characteristics table),
respectively.

VR1

KCt R1 V

OSC

(Hz)

5. The FG amplifier bandwidth BW is determined by the following formula. Here Rfgo is the pin 15

output resistance. See the electrical characteristics table.

However, when C105 is 0, BW is limited to 8 kHz by the internal capacitance.

BW =

C105 Rfgo

(Hz)

6. Determine C106 using the following formula as a rough estimate.

C106

(R103 + R104) f

(F)

Consult with the oscillator element manufacturer.

7. Relationship of between the CLK frequency fc and the FG frequency f

. Are determined by the

under table.

2048.5 ·

fc (Hz)

But rotation response is 80 ppm down

1/3

1/6

1/12

8. If an input of 1.25/G

(Vp-p) or higher is applied, irregular rotation may occur due to FG amplifier

saturation.

9. The absolute value of the whole amplifier input voltage must be within the in-phase input voltage

range.

10. This should be decided after consultation with the oscillator manufacturer.

11. Determine C109 using the following formula as a rough estimate.

300pF

C109

(F)

Fc (R108 + 200

)

3 k

R107

6 k

HA13605A

12. TAB should be connected to pin 23 (GND). The FG amplifier may not operate normally, causing

irregular rotation, due to parasitism during phase switching.

Absolute Maximum Ratings (Ta = 25

Item

Symbol

Rated Value

Unit

Notes

Power supply voltage

Input voltage (1)

Vin(1)

0.3 to 6

Input voltage (2)

Vin(2)

0.3 to 6

Instantaneous output current

Iomax

4.5 (@T

400 ms)

Steady state output current

Iout(1)

1.5

Logic output current

Iout(2)

Output voltage

Vout

Allowable power dissipation

25 (@Tc = 112

Operating junction temperature

Tjopr

10 to +125

Storage temperature

Tstg

55 to +125

Notes: 1. The operating voltage range is as shown below.

= 20 to 35 V

2. Applies to the hall amplifier. (Pin 8, Pin 10, Pin 12)

3. Applies to the DIR input pin (Pin 17) and the D switchover input pin (Pin 19).

4. Applies to the U, V, and W output pins (Pins 2, 4, and 6). The operation locus of each TRS must

not exceed the ASO range shown in figure 1.

However, there is no particular regulation concerning the recovery current. Refer to figure 2 for
the temperature rise in the event of rush.

5. Applies to the speed monitor output (Pin 21).

6. The package thermal resistances are shown below.

j-c

1.5

C/W (with an arbitrarily large heat sink)

j-a

C/W (when mounted on a glass-epoxy PC board)

HA13605A

Electrical Characteristics (Ta = 25

C, V

= 24 V)

Item

Symbol Min

Typ

Max

Unit

Test Conditions

Applicable
Pins

Notes

Current drain

Icc(1)

= 35 V

R1 = 5.6 k

Icc(2)

= 45 V

Hall

Input current

8, 10, 12

amplifier

Common mode
input voltage
range

Vhc

1.5

2.5

3.5

Differential mode
input voltage
range

Vhd

1000

Output

Leakage current

Icer

Vds = 35 V

2, 4, 6

amplifier

On resistance

Rdson

0.5

0.7

Io = 1.5 A, Tj = 25

Diode voltage

Vfl

1.2

2.0

= 1.5 A, lower arm

Vfu

0.8

1.2

= 1.5 A, upper arm

PWM

Low level voltage

1.10

1.30

1.50

oscillator
& Com-

Oscillator
amplitude

Vosc

2.0

2.2

2.4

parator

Correct coefficient K

R1 = 5.6 k

FG
amplifier

Input voltage
range

Vfg

300

Gfg = 32 dB, R103,
R104 = 580

14, 16

and FG
detector

Differential noise
margin

1.25

Gfg = 32 dB, R103,
R104 = 580

Common noise
margin

1.0

f = 1kHz

CLK OSC

Oscillator
frequency range

1.0

10.0

MHz

Crystal oscillator

20, 22

Discrimi-

Count

2048

nator

Operating
frequency range

fdis

3.0

MHz

Charge

R1 voltage

5.1

5.6

6.1

R1 = 5.6 k

pump

Charge current

Icp

0.117

0.130

0.143

A/A

Vo = 1.5 V,

Discharge current

Icd

0.117 0.130 0.143 A/A

R1 = 5.6 k

Current ratio

0.8

1.0

1.2

A/A

Icp/Icd

Leakage current

Ioff

Vo = 3.5 V

Clamp voltage

Vcrmp

4.00

4.25

4.50

Icp = 50 mA

HA13605A

Electrical Characteristics (Ta = 25

C, V

= 24 V) (cont)

Item

Symbol Min

Typ

Max

Unit

Test Conditions

Applicable
Pins

Notes

Speed

Locking range

monitor

Output low level
voltage

Vol2

0.4

Io = 10 mA

Output leakage
current

Icer2

Vce = 15 V

Current

Input current

Icl

Vx1 = 0 to 2 V

limiter

Offset voltage

Vclos

Vx1 = 0.5 to 2 V

LVI

Operating voltage

Vsd

Turn on

OVSD

Operating voltage

Vovs

Turn on

OTSD

Operating
temperature

Tsd

125

160

Hysteresis

Thys

Input

Input current

Ii1, Ii2

Vin = 0.3 V to 5.25 V

interface

DIR Input low
voltage

Vil1

1.2

DIR Input middle
voltage

Vim1

1.7

3.2

DIR Input high
voltage

Vih1

3.7

D Input low
voltage

Vil2

1.5

D Input middle
voltage

Vim2

2.0

2.8

D Input high
voltage

Vih2

3.5

Hall amp.

Hysteresis

Uhys

Rh = 400

6, 9

Power

Transient

tphl1

at PWM

7, 9

drive

response time

tplh1

at PWM

tr, tf

300

at PWM

Filter

Noise cancellation
range

Tn1

1.0

PWMOSC
& comp-

Oscillation
frequency range

kHz

arator

Comparator
hysteresis

Vphys

HA13605A

Electrical Characteristics (Ta = 25

C, V

= 24 V) (cont)

Item

Symbol Min

Typ

Max

Unit

Test Conditions

Applicable
Pins

Notes

FG amp.
& FG

Feedback
resistance

Rfgf

detector

Output resistance

Rfgo

Hysteresis

VZXhys

CLK OSC

Frequency error

Dfc

0.01

Crystal oscillator

Threshold voltage

Vfth

2.7

Oscillation
amplitude

Vfc

5.6

Vpp

OVSD

Hysteresis

OVDhys --

1.5

LVI

Hysteresis

Lhys

1.0

Noise filter Noise cancellation

range

Tn2

3.0

fc = 4 MHz, D = 1/6

8, 9

Notes: 1. The on resistance per single MOS transistor.

2. Stipulated for the discriminator input.

3. See figure 3. See figure 4.

4. Specified as a ratio to the R1 current.

5. The speed monitor output is low when the motor is at the set speed.

6. See figure timing chart.

7. See figure 5.

8. Refer to the operation and the formula for determining the maximum cancelable noise width Tn

(figure 6).

Noise cancellation is effective only when the FG detector output is low.

9. Design guide only.

Cautions

1. Hitachi neither warrants nor grants licenses of any rights of Hitachi's or any third party's patent,

copyright, trademark, or other intellectual property rights for information contained in this document.
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intellectual property rights, in connection with use of the information contained in this document.

2. Products and product specifications may be subject to change without notice. Confirm that you have

received the latest product standards or specifications before final design, purchase or use.

3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,

contact Hitachi's sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.

4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly

for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as fail-
safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
consequential damage due to operation of the Hitachi product.

5. This product is not designed to be radiation resistant.

6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without

written approval from Hitachi.

7. Contact Hitachi's sales office for any questions regarding this document or Hitachi semiconductor

products.

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