Instruction manual for Evaluation Board of TB67H400AHG

November 10, 2015

Re v.1.0

【Outline】The TB67H400AHG is a dual channel H-SW driver corresponding to the constant current PWM control system and the direct PWM control system. It can control two brushed DC motors independently. BiCD process is adopted. Rating of 50V and 4.0A per channel is realized. In operating in Large mode, 1ch high current (max. 8.0A) drive is also possible.

This evaluation board mounts necessary components to evaluate the IC. Brushed DC motor can be controlled by the constant current PWM drive and the direct PWM drive.Please sense controllability of brushed DC motor applying the TB67H400AHG.

【Note】In using, please be careful about thermal condition sufficiently. As for each control signal, please refer to the IC specification by accessing to the below URL.http://toshiba.semicon-storage.com/info/lookup.jsp?pid=TB67H400AHG&lang=en&region=apc&sug=1

Further, the application of this evaluation board is limited to the purpose of evaluating and learning the motor control. Please do not ship them to a market.

Silk name Signal nameDMODE0 NC

4 NC

VREF VREF

6 HBMODE

8 INA1

9 INA2

10 PWMA

11 PWMB

12 INB1

13 INB2

14 TBLKAB

Po

we

r so

urc

e o

f V

M(1

0V

to

47

V)

VM

GND

Re

fere

nce

vo

lta

ge

fo

r

mo

tor

curr

en

t se

t

Vre

f(0

V t

o 3

.6V

)

Vre

f(fo

r A

/B-a

xis)

Bru

she

d D

C m

oto

r

Bru

she

d D

C m

oto

r

Connection to Evaluation boardCorresponding table

(Silk name vs. Signal name)(Note) Silk name and signal name on the board

are different because the series products have

the common board.

Charge

Fast

Slow

Vref

RRSA

RRSBJP_VRF2

R_VRF1

R_VRF2

Mounting

area

Setting evaluation board１１１１Setting motor current Setting motor current

Vref can be generated from the internal regulator (VCC) by mounting the divider resistance to R_VRF1 and R_VRF2 and short-circuiting JP_VRF2.

Iout(max) = VREF(gain) x

VREF(gain):Decay ratio of VREF: 1/5.0 (typ.)

Vref(V)

RRS(Ω)

RRS=0.22Ω

Waveform of motor current Current value of setting motor

C

R1

Charge

Fast

Slow

fOSCM = 1 / [0.56 x ｛C x (R1 + 500)]fchop = fOSCM / 16

Setting evaluation board2Setting chopping frequency of the constant current of the motor

Formula of setting chopping frequency

Recommended frequency range: fchop=40kHz to 150kHz100kHz configurationMounted parts are as follows; Capacitor (C=270pF), Resistance (R1=3.6kΩ)

Waveform of motor current

Chopping frequency (fchop)

JP_VCC

VDD pin

Setting evaluation board3Setting motor operation 【【【【Enhanced figure of jumper part】】】】

Fixed level by jumper

Jumper indicated above is adopted on this evaluation board to set operation of the TB67H400AHG.To select the function by the jumper, short-circuit JP_VCC or supply the voltage of high level by VDD pin.In above, fixed level of the silk near the jumper is indicated inside the white frame. Please change the short position according to the configuration of the usage function.In case of inputting the signal externally, please remove the short pin.

24

22

20

18

16

14

12

10

8

6

4

2

VM

OUTB+

OUTB-

OUTA-

OUTA+

GND

INB2

PWMB

INA2

OSCM

VREF

GND

VCC

RSB

GND

GND

GND

RSA

TBLKAB

INB1

PWMA

INA1

HBMODE

NC

NC

CON3

CONNECTORCON2

CONNECTOR

CONNECTOR

C_V

M1 +

C_V

M2

VM

-

25

23

21

19

17

15

13

11

9

7

5

3

1

OUT_A-

OUT_B+

OUT_B-

OUT_A+

CON1

C_V

CC

C_O

SC

MR

_OS

CM

R_M

OU

T

R_N

C2

R_N

C1

VREF

6

8

9

10

11

12

13

14

OSCM

DMODE0

4 R_VRF2 R_VRF1

JP_VRF2

JP_VRF1

JP_VCC

3-toggle switches

orJumper

VDD

GND

GND

GND

GND

C_V

DD

C_O

AM

C_O

BP

C_O

BM

C_O

AP

: Jumper

Blue line is for power system.

C_V

RE

FC

_HB

MO

DE

R_RSA

R_RSB

Circuit of evaluation board

: Check pin: Socket pin

: Solder land＋Through hole(Please provide the land for surface-mounting component which has a through hole.)

: Solder land