tb6558flg TOSHIBA Semiconductor CORPORATION, tb6558flg Datasheet - Page 8

• Manufacturer Part Number: tb6558flg
• Description: Dc Motor Driver
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Application Circuit Example
•
•
(The application circuits shown in this document are provided for reference purposes only. Thorough evaluation is required, especially at the mass production design stage.
Toshiba does not grant any license to any industrial property rights by providing these examples of application circuits.)
Setting output current:
Setting V
Note 1: Bypass capacitors and a capacitor that is connected to the OSC pin should be places as close to the IC as possible.
Note 2: The TB6558FLG must be powered on either when the STBY pin is set Low (standby mode), or when the IN1 and IN2 pins are set Low (stop mode).
Note 3: Care should be taken in the design of the output, V
Note 4: The IC should be installed correctly. Otherwise, the IC or peripheral parts and devices may be degraded or permanently damaged.
short-circuit to power supply, a short-circuit to ground or a short-circuit to adjacent pins. Any of these events might cause a current larger than the rated maximum to flow
through the IC. To ensure the safety of the system, overcurrent protection should be provided by using fuses or other protection devices.
refA
and V
MPU
GND
V
3 V
DD
refB
I
V
OUT
refA
(A) = V
= V
CC
× R1 − 2/(R − 1 + R1 − 2), V
ref
STBY
BIN1
BIN2
V
(V) ÷ RF (Ω), Channel A: I
AIN1
AIN2
V
OSC
refB
refA
15
12
11
4
9
5
8
6
14
13
OSC
0.6 V
V
3 V to 5 V
V
ref
GND
CC
CC
, V
M
20 kΩ
and ground lines. The IC might be permanently damaged in case of a short-circuit across its outputs, a
refB
O
− A = V
= V
ref
(0.6 V) × R2/(20 k + R2)
refA
÷ RFA, Channel B: I
8
H- bridge
B control
B control
H-bridge
Timing
Timing
logic
logic
logic
logic
driver
driver
Pre-
Pre-
TSD
O
− B = V
refB
H-bridge
H-bridge
A
B
÷ RFB
V
M
3
18
21
19
22
24
1
AO1
AO2
RFA
BO1
BO2
RFB
Motor
Motor
RFA
RFB
TB6558FLG
2008-04-03