TOSHIBA TB62209F Technical data

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TB62209F

TOSHIBA BiCD Processor IC Silicon Monolithic

Preliminar

T B 6 2 2 0 9 F

Stepping Motor Driver IC Using PWM Chopper Type

The TB62209F is a stepping motor driver driven by chopper

micro-step pseudo sine wave.

The TB62209F integrates a decoder for CLK input in micro steps as a system to facilitate driving a two-phase stepping motor using micro-step pseudo sine waves. Micro-step pseudo sine waves are optimal for driving stepping motors with low-torque ripples and at low oscillation. Thus, the TB62209F can easily drive stepping motors with low-torque ripples and at high efficiency.

Also, TB62209F consists output steps by DMOS (Power MOS FET), and that makes possible to control the output power dissipation much lower than ordinary IC with bipolar transistor output.

The IC supports Mixed Decay mode for switching the attenuation ratio at chopping. The switching time for the attenuation ratio can be switched in four stages according to the load.

Features

Weight: g (typ.)

• Bipolar stepping motor can be controlled by a single driver IC

• Monolithic BiCD IC

• Low ON-resistance of R

• Built-in decoder and 4-bit DA converters for micro steps

• Built-in ISD, TSD, V

• Built-in charge pump circuit (two external capacitors)

• 36-pin power flat package (HSOP36-P-450-0.65)

• Output voltage: 40 V max

• Output current: 1.8 A/phase max

• 2-phase, 1-2 (type 2) phase, W1-2 phase, 2W1-2 phase, 4W1-2 phase, or motor lock mode can be selected.

• Built-in Mixed Decay mode enables specification of four-stage attenuation ratio.

• Chopping frequency can be set by external resistors and capacitors.

High-speed chopping possible at 100 kHz or higher.

Note: When using the IC, pay attention to thermal conditions. These devices are easy damage by high static

voltage. In regards to this, please handle with care.

= 0.5 Ω (Tj = 25°C @1.0 A: typ.)

on

&VM power monitor (reset) circuit for protection

DD

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Block Diagram

f

1. Overview

TB62209F

RESET

CW/CCW

ENABLE

STANDBY

D MODE 3

D MODE 2

D MODE 1

CLK

V

re

TORQUE 1

Current Level Set

TORQUE 2 MDT 1 MDT 2

Micro-step decorder

Torque control

4-bit DA

(sine angle control)

V

DD

Chopper OSC

OCS

CR-CLK

converter

MO

CR

V

M

Ccp C

Ccp B

Ccp A

Current Feedback (×2)

V

R

S

V

M

Charge

Pump

Unit

RS 1

V

RS 2

STANDBY

ENABLE V

R

S COMP 1

R

S COMP 2

(Mixed Decay control)

Output (H-bridge)

× 2

Stepping

Moter

Output control

ISD

V

DDR/VMR

V

M

protect

Protection Unit

TSD

DD

TSD protect

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2. LOGIC UNIT A/B (C/D unit is the same as A/B unit)

Function

This circuit is used to input from the DATA pins micro-step current setting

them to the subsequent stage. By switching the SETUP pin, the data in the mixed decay

can be overwritten.

MDT 1 MDT 2

TORQUE 1 TORQUE 2

TB62209F

data and to transfer

timing table

DATA MODE

D MODE 1

D MODE 2

D MODE 3

CW/CCW

CLK

STANDBY

RESET

ENABLE

Output control circuit

Torque × 2 bits

Current

feedback

circuit

Micro-step decoder

Decay × 2 bits B unit side

Mixed



Decay

circuit

Micro-step current data × 4 bits B unit side

DA circuit

Phase × 1 bit B unit side

Output control

circuit

Decay × 2 bits A unit side

Micro-step current data × 4 bits A unit side

Phase × 1 bit A unit side

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3. Current feedback circuit and current setting circuit



Function

The current setting circuit is used to set the reference voltage of the output current using the current

setting decoder.

The current feedback circuit is used to output to the output control circuit the relation between the set current value and current setting circuit with the potential difference generated when current flows through the current sense resistor connected between R

The chopping waveform generator circuit to which CR is connected is used to generate clock used as reference for the chopping frequency.

TORQUE

0, 1



output current. This is done by comparing the reference voltage output to the

and VM.

S

Decoder

Unit

CURRENT

0-3

TB62209F

V

ref

R

S

100％

85％ 70％ 50％



Torque control

circuit

Current setting

circuit

DA circuit

VRS circuit 1

(detects

potential

difference

between

RS and VM)

Micro-step

15

current

14

setting

13

selector

12 11

circuit

10

9 8 7 6 5 4

4-bit

3

DA

2

circuit

1

0

R

S COMP

circuit



1

(Note 1)

Chopping waveform

Waveform shaping circuit

Chopping reference circuit

Output stop signal (ALL OFF)

generator circuit

NF

(set current

reached signal)

CR

Mixed Decay timing

circuit

Output control

circuit

V

M

Current feedbackcircuit

VRS circuit 2

(detects

potential

difference

between

VM and RS)



R

S COMP

circuit

2

(Note 2)

RNF

(set current

monitor signal)

Note 1: R

S COMP1

: Compares the set current with the output current and outputs a signal when the output

current reaches the set current.

Note 2: R

S COMP2

: Compares the set current with the output current at the end of Fast mode during chopping.

Outputs a signal when the set current is below the output current.

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4. Output control circuit, current feedback circuit and current setting circuit

TB62209F

Current

feedback

circuit

Current

setting

circuit

STANDBY

Output pin

V

DD

Output control circuit

NF set current reached signal

RNF set current monitor signal

Output stop signal

ISD

circuit

M

VMR

circuit

V

DDR

circuit

Micro-step current setting

decoder circuit

PHASE

Mixed

Decay

timing

Charge Start

U1

U2

L1

L2

Output RESET signal

Internal

stop signal select circuit

Charge

DECAY

MODE

pump

halt

signal

CR counter

CR Serector

VDD VM

Charge

pump circuit

Chopping

reference circuit

Mixed Decay timing

circuit

Power supply for upper drive output

VH

Output circuit

Cop A

Cop B

V

: VDD power on

DDR

Reset

VMR: VM power on Reset

ISD: Current shutdown

circuit

TSD: Thermal shutdown

circuit

Note: The STANDBY pins are pulled down in the IC by 10-kΩ resistor.

When not using the pin, connect it to GND. Otherwise, malfunction may occur.

TSD

circuit

Protection

circuit

Micro-step current

setup latch

clear signal

LOGIC

Mixed Decay

timing table clear

signal

5

Cop C

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5. Output equivalent circuit (A/B unit (C/D unit is the same as A/B unit)

TB62209F

From output control circuit

Power

supply

for upper

drive output

(VH)

U1 U2 L1 L2

Output

driver circuit

Phase A

Power

supply

for upper

drive output

(VH)

U1 U2 L1 L2

Output

driver circuit

Phase B

U1

L1

U1

L1

U2

L2

U2

L2

Output A

Output

Output B

Output

R

S A



A

RSB



B

R

RS A

V

M B

R

RS B

PGND

To VM

M

Note: The diode on the dotted line is parasitic diode.

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6. Input equivalent circuit

1. Input circuit (CLK, TORQUE, MDT, CW/CCW, DATA MODE, Decay Mode)

V

DD

IN

150 Ω

To Logic IC

TB62209F

2. Input circuit (

3. V

V

SS

V

DD

IN

V

SS

input circuit

ref

V

DD

IN

RESET

100 kΩ

, ENABLE, STANDBY)

150 Ω

2

GND

To Logic IC

GND

V

SS

4. Output circuit (MO, PROTECT)

V

DD

OUT

V

SS

150 Ω

To DA circuit

GND

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TB62209F

f

Y

Pin Assignment

(top view)

DD

re

S B

1 D MODE 1

2 D MODE 2

3 D MODE 3

4 CW/CCW

5 V

6 V

7 NC

8 NC

9 R

(FIN)

TB62209F

36

CR

35

CLK

34 ENABLE

33 OUT B

32 RESET

31 DATA MODE

30 NC

29 OUT B

28 PGND

(FIN)

10R

S A

11NC

12NC

13VM

14STANDB

15Ccp A

16Ccp B

17Ccp C

18MO

Pin Assignment for PWM in Data Mode

D MODE 1 → GA+ (OUT A, A) D MODE 2 → GA− (OUT A, D MODE 3 → GB+ (OUT B, CW/CCW → GB− (OUT B,

Note: Pin assignment above is different at data mode and PWM.

A) B)

B)

27 PGND

26 OUT A

25 NC

24 MDT 2

23 MDT 1

22 OUT A

21 TORQUE2

20 TORQUE1

19 PROTECT

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Pin Description 1

Pin Number Symbol Function Remarks

D MODE 3, 2, 1 =

1 D MODE 1

2 D MODE 2

3 D MODE 3

4 CW/CCW Sets motor rotation direction

5 VDD Logic power supply connecting pin Connect to logic power supply (5 V).

6 V

7 NC Not connected Not wired

8 NC Not connected Not wired

9 R

FIN FIN FIN Logic ground pin

10 R

11 NC Not connected Not wired

12 NC Not connected Not wired

ref

S B

S A

Motor drive mode setting pin

Reference power supply pin for setting output current

Unit-B power supply pin

(connecting pin for power detection resistor)

Unit-A power supply pin

(pin connecting power detection resistor)

LLL: Same function as that of STANDBY pin

LLH: Motor Lock mode

LHL: 2-Phase Excitation mode

LHH: 1-2 Phase Excitation (A) mode

HLL: 1-2 Phase Excitation (B) mode

HLH: W1-2 Phase Excitation mode

HHL: 2W1-2 Phase Excitation mode

HHH: 4W1-2 Phase Excitation mode

CW: Forward rotation

CCW: Reverse rotation

Connect to supply voltage for setting current.

Connect current sensing resistor between this pin and V

Connect to power ground.

The pin functions as a heat sink. Design pattern taking heat into consideration.

Connect current sensing resistor between this pin and V

.

M

.

M

Pin Assignment for PWM in Data Mode

TB62209F

D MODE 1 → GA+ (OUT A, A) D MODE 2 → GA− (OUT A, D MODE 3 → GB+ (OUT B, CW/CCW → GB− (OUT B,

A) B)

B)

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Pin Description 2

Pin Number Symbol Function Remarks

13 VM Motor power supply monitor pin Connect to motor power supply.

14

15 Ccp A

16 Ccp B

17 Ccp C (charging side)

18 MO Electrical angle (0°) monitor pin

19 PROTECT TSD operation detector pin

20 TORQUE 1

21 TORQUE 2

22 OUT A Channel A output pin 

23 MDT 2

24 MDT 1

STANDBY

All-function-initializing and Low Power Dissipation mode pin

Pin connecting capacitor for boosting output stage drive power supply (storage side connected to GND)

Pin connecting capacitor for boosting output stage drive power supply

Motor torque switch setting pin

Mixed Decay mode setting pins

H: Normal operation

L: Operation halted Charge pump output halted

Connect capacitor for charge pump (storage side) V

Connect capacitor for charge pump (charging side) between this pin and Ccp C.

Connect capacitor for charge pump (charging side between this pin and Ccp B.

Outputs High level in 4W1-2, 2W1-2, W1-2, or 1-2 Phase Excitation mode with electrical angle of 0° (phase B: 100%, phase A: 0%).

In 2-Phase Excitation mode, outputs High level with electrical angle of 0° (phase B: 100%, phase A: 100%).

Detects thermal shut down (TSD) and outputs High level.

Torque 2, 1 = HH: 100% LH: 85%

HL: 70% LL: 50%

MDT 2, 1 = HH: 100% HL: 75%

LH: 37.5% LL: 12.5%

and VDD are generated.

M

TB62209F

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Pin Description 3

Pin Number Symbol Function Remarks

25 NC Not connected Not wired

26 OUT A Channel A output pin 

27 PGND Power ground pin Connect all power ground pins and VSS to GND.

FIN FIN Logic ground pin

28 PGND Power ground pin Connect all power ground pins to GND.

29 OUT B Channel B output pin 

30 NC Not connected Not wired

31 DATA MODE Clock input and PWM

32 RESET Initializes electrical angle.

33 OUT B Channel B output pin 

34 ENABLE Output enable pin Forcibly turns all output transistors off.

35 CLK

36 CR

Inputs CLK for determining number of motor rotations.

Chopping reference frequency reference pin (for setting chopping frequency)

The pin functions as a heat sink. Design pattern taking heat into consideration.

H: Controls external PWM.

L: CLK-IN mode

We recommend this pin normally be used as CLK-IN mode pin (Low).

In PWM mode, functions such as constant current control do not operate.

Forcibly initializes electrical angle.

At this time we recommend ENABLE pin be set to Low to prevent misoperation.

H: Resets electrical angle.

L: Normal operation

Electrical angle is incremented by one for each CLK input.

CLK is reflected at rising edge.

Determines chopping frequency.

TB62209F

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1. Function of CW/CCW

CW/CCW switches the direction of stepping motor rotation.

Input Function

H Forward (CW)

L Reverse (CCW)

2. Function of MDT 1/MDT 2

MDT 1/MDT 2 specifies the current attenuation speed at constant current control. The larger the rate (%), the larger the attenuation of the current. Also, the peak current value (current

ripple) becomes larger. (Typical value is 37.5%.)

MDT 2 MDT 1 Function

L L 12.5% Mixed Decay mode

L H 37.5% Mixed Decay mode

H L 75% Mixed Decay mode

H H 100% Mixed Decay mode (Fast Decay mode)

3. Function of TORQUE X

TORQUE X changes the current peak value in four steps. Used to change the value of the current used,

for example, at startup and fixed-speed rotation.

TB62209F

TORQUE 2 TORQUE 1 Comparator Reference Voltage

H H 100%

L H 85%

H L 70%

L L 50%

4. Function of RESET (forced initialization of electrical angle)

With the CLK input method (decoder method), unless CLKs are counted, except MO, where the electrical

angle is at that time is not known. Thus, this method is used to forcibly initialize the electrical angle.

For example, used to change the excitation mode to another drive mode during output from MO

(electrical angle = 0°).

Input Function

H Initializes electrical angle to 0°

L Normal operation

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5. Function of ENABLE (output operation)

ENABLE forcibly turns OFF all output transistors at operation. Data such as electrical angle and operating mode are all retained.

Input Function

H Operation enabled (active)

L

Output halted (operation other

than output active)

6. Function of STANDBY

STANDBY halts the charge pump circuit (power supply booster circuit) as well as halting output.

We recommend setting to Standby mode at power on.

(At this time, data on the electrical angle are retained.)

Input Function

H Operation enabled (active)

Output halted (Low Power

L

Dissipation mode)

Charge pump halted

7. Functions of Excitation Modes

TB62209F

Excitation Mode DM3 DM2 DM1 Remarks

1

2 Motor Lock mode 0 0 1 Locks only at 0° electrical angle.

3

4

5

6

7

8

Low Power

Dissipation mode

2-Phase Excitation

mode

1-2 Phase Excitation

(A)

1-2 Phase Excitation

(B)

W1-2 Phase

Excitation

2W1-2 Phase

Excitation

4W1-2 Phase

Excitation

0 0 0

0 1 0 45° → 135° → 225° → 315° → 45°

0 1 1 Low-torque, 1-bit micro-step change

1 0 0 High-torque, 1-bit micro-step change

1 0 1 2-bit micro-step change

1 1 0 3-bit micro-step change

1 1 1 4-bit micro-step change

Standby mode

Charge pump halted

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8. Function of DATA MODE

DATA MODE switches external duty control (forced PWM control) and constant current CLK-IN control. In Phase mode, H-bridge can be forcibly inverted and output only can be turned off. Constant current drive including micro-step drive can only be controlled in CLK-IN mode.

Input Function

H PHASE MODE

L CLK-IN MODE

Note 1: Normally, use CLK-IN mode.

9. Electrical Angle Setting immediately after Initialization

In Initialize mode (immediately after RESET is released), the following currents are set.

In Low Power Dissipation mode, the internal decoder continues incrementing the electrical angle but current is not output.

Note that the initial electrical angle value in 2-Phase Excitation mode differs from that in nW1-2 (n = 0, 1, 2, 4) Phase Excitation mode.

Excitation Mode IB (%) IA (%) Remarks

TB62209F

1

2 Motor Lock mode 100 0

3 2-Phase Excitation 100 100 45°

4

5

6

7

8

Low Power

Dissipation mode

1-2 Phase Excitation

(A)

1-2 Phase Excitation

(B)

W1-2 Phase

Excitation

2W1-2 Phase

Excitation

4W1-2 Phase

Excitation

100 0 Electrical angle incremented but no current output

Electrical angle incremented but no motor rotation

due to no IA output

100 0 0°

Note 2: Where, IB = 100% and IA = 0%, the electrical angle is 0°. Where, IB = 0% and IA = 100%, the electrical

angle is +90°.

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10. Function of DATA MODE (Phase A mode used for explanation)

DATA MODE inputs the external PWM signal (duty signal) and controls the current. Functions such as constant current control and overcurrent protector do not operate.

Use this mode only when control cannot be performed in CLK-IN mode.

GA+ GA− Output State

(1) L L Output off

(2) L H A+ phase: Low A− phase: High

(3) H L A+ phase: High A− phase: Low

(4) H H Output off

(1)･(4)

(2)

TB62209F

(3)

U1

OFF

L1

OFF

PGND

Note: Output is off at (1) and (4).

D MODE 1 → GA+ (OUT A,

D MODE 2 → GA− (OUT A,

D MODE 3 → GB+ (OUT B,

CW/CCW → GB− (OUT B,

U2

OFF

L2

OFF

A) A) B)

B)

U1

OFF

L1

ON

(Note)

Load

PGND

U2

ON

L2

OFF

U1

ON

OFF

L1

(Note)

Load

U2

OFF

ON

L2

PGND

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TB62209F

Maximum Ratings

Characteristics Symbol Rating Unit

Logic supply voltage V

Motor supply voltage VM 40

Output current (Note 1) I

Current detect pin voltage VRS V

Charge pump pin maximum voltage (CCP1 Pin)

Logic input voltage (Note 2) VIN to VDD + 0.4 V

Power dissipation

Operating temperature T

Storage temperature T

Junction temperature Tj 150 °C

(Ta ==== 25°C)

(Note 3) 1.4

(Note 4)

DD

1.8 A/phase

OUT

V

H

PD

−40 to 85 °C

opr

−55 to 150 °C

stg

7 V

± 4.5 V V

M

+ 7.0 V

M

3.2

W

V

Note 1: Perform thermal calculations for the maximum current value under normal conditions. Use the IC at 1.5 A or

less per phase. The current velue maybe controled according to the ambient temperature or board conditions.

Note 2: Input 7 V or less as V

IN

.

Note 3: Measured for the IC only. (Ta = 25°C)

Note 4: Measured when mounted on the board. (Ta = 25°C)

Ta: IC ambient temperature

T

: IC ambient temperature when starting operation

opr

Tj: IC chip temperature during operation Tj (max) is controlled by TSD (thermal shut down circuit)

Recommended Operating Conditions

Characteristics Symbol Test Condition Min Typ. Max Unit

Power supply voltage VDD  4.5 5.0 5.5 V

Motor supply voltage VM

Output current I

Logic input voltage VIN  GND  VDD V

Clock frequency f

Chopping frequency f

Reference voltage V

Current detect pin voltage VRS VDD = 5.0 V 0 ±1.0 ±4.5 V

OUT (1)

CLK

chop

ref

(Ta ==== 0 to 85°C, (Note 5))

= 5.0 V, Ccp1 = 0.22 µF,

V

DD

Ccp2 = 0.02 µF

Ta = 25°C, per phase  1.2 1.5 A

VDD = 5.0 V  1.0 150 KHz

VDD = 5.0 V 50 100 150 KHz

VM = 24 V, Torque = 100% 2.0 3.0 VDD V

20 24 34 V

Note 5: Because the maximum value of Tj is 120°C, recommended maximum current usage is below 120°C.

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