Datasheet TB9053FTG,TB9054FTG - Preliminary (Toshiba) - 4
| Manufacturer | Toshiba |
| Description | Bi-CMOS Linear Integrated Circuit, Silicon Monolithic |
| Pages / Page | 36 / 4 — Preliminary. 5. Function description. 5.1. Motor drive output circuit |
| File Format / Size | PDF / 2.2 Mb |
| Document Language | English |
Preliminary. 5. Function description. 5.1. Motor drive output circuit
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Preliminary
TB9053FTG,TB9054FTG
5. Function description
In the specifications below, DT denotes a dead time and SB denotes a short brake at motor drive operations.
5.1. Motor drive output circuit
The output circuit operates in the following functions (Table 5.1). In Table 5.1 to Table 5.3, the following notation are used. X: Don’t Care, H: High, L: Low, Z: High Impedance. OSEL1 OSEL2 LARGE mode (combined 2 channels; 1 motor) L L Half mode H L SMALL mode (separate 2 channels; 2 motors) L H Prohibited mode (Motor output OFF) H H Note: The OSEL1 and OSEL2 pin inputs are latched when the initial diagnosis starts. If prohibited mode is entered, reset the VCC power supply (by lowering it below the VCC under-voltage POR detection voltage) to restart the IC.
5.1.1. 2-channel mode (SMALL mode) (OSEL1 = L and OSEL2 = H) Table 5.1 H-bridge motor function 1
PWM1 PWM2 EN1 ENB1 SLEEPB
OUT1 OUT2
Forward H L H L H
H L
Short brake L L H L H
L L
Reverse L H H L H
L H
Short brake H H H L H
H H
EN1 Disable X X L L H
Z Z
ENB1 Disable X X H H H
Z Z
Sleep mode X X X L/H L
Z Z
EN1 Disconnected X X Z X X
Z Z
ENB1 Disconnected X X X Z X
Z Z
PWM1 Disconnected Z L/H H L H
L L/H
PMM2 Disconnected L/H Z H L H
L/H L
PWM3 PWM4 EN2 ENB2 SLEEPB
OUT3 OUT4
Forward H L H L H
H L
Short brake L L H L H
L L
Reverse L H H L H
L H
Short brake H H H L H
H H
EN2 Disable X X L L H
Z Z
ENB2 Disable X X H H H
Z Z
Sleep mode X X X L/H L
Z Z
EN2 Disconnected X X Z X X
Z Z
ENB2 Disconnected X X X Z X
Z Z
PWM3 Disconnected Z L/H H L H
L L/H
PMM4 Disconnected L/H Z H L H
L/H L
Note: When changing the motor rotation from Forward to Reverse or vice versa, always insert a brake, which involves regeneration. Otherwise, the IC may be broken down. Note: When the current limit control is applied, the operation is different from the motor function table above. For details, refer to the current limit control (5.3). Note: The SLEEPB pin sets a low-power sleep mode. When SLEEPB = L, the system enters a sleep mode. When SLEEPB = H, the system cancels a sleep mode. Note: When SLEEPB = L, the ENB1/2 pins does not use OPEN, set the ENB1/2 pins to L or H. © 20 20 4 2020-12-10 Toshiba Electronic Devices & Storage Corporation
Preliminary
TB9053FTG,TB9054FTG
5. Function description
In the specifications below, DT denotes a dead time and SB denotes a short brake at motor drive operations.
5.1. Motor drive output circuit
The output circuit operates in the following functions (Table 5.1). In Table 5.1 to Table 5.3, the following notation are used. X: Don’t Care, H: High, L: Low, Z: High Impedance. OSEL1 OSEL2 LARGE mode (combined 2 channels; 1 motor) L L Half mode H L SMALL mode (separate 2 channels; 2 motors) L H Prohibited mode (Motor output OFF) H H Note: The OSEL1 and OSEL2 pin inputs are latched when the initial diagnosis starts. If prohibited mode is entered, reset the VCC power supply (by lowering it below the VCC under-voltage POR detection voltage) to restart the IC.
5.1.1. 2-channel mode (SMALL mode) (OSEL1 = L and OSEL2 = H) Table 5.1 H-bridge motor function 1
PWM1 PWM2 EN1 ENB1 SLEEPB
OUT1 OUT2
Forward H L H L H
H L
Short brake L L H L H
L L
Reverse L H H L H
L H
Short brake H H H L H
H H
EN1 Disable X X L L H
Z Z
ENB1 Disable X X H H H
Z Z
Sleep mode X X X L/H L
Z Z
EN1 Disconnected X X Z X X
Z Z
ENB1 Disconnected X X X Z X
Z Z
PWM1 Disconnected Z L/H H L H
L L/H
PMM2 Disconnected L/H Z H L H
L/H L
PWM3 PWM4 EN2 ENB2 SLEEPB
OUT3 OUT4
Forward H L H L H
H L
Short brake L L H L H
L L
Reverse L H H L H
L H
Short brake H H H L H
H H
EN2 Disable X X L L H
Z Z
ENB2 Disable X X H H H
Z Z
Sleep mode X X X L/H L
Z Z
EN2 Disconnected X X Z X X
Z Z
ENB2 Disconnected X X X Z X
Z Z
PWM3 Disconnected Z L/H H L H
L L/H
PMM4 Disconnected L/H Z H L H
L/H L
Note: When changing the motor rotation from Forward to Reverse or vice versa, always insert a brake, which involves regeneration. Otherwise, the IC may be broken down. Note: When the current limit control is applied, the operation is different from the motor function table above. For details, refer to the current limit control (5.3). Note: The SLEEPB pin sets a low-power sleep mode. When SLEEPB = L, the system enters a sleep mode. When SLEEPB = H, the system cancels a sleep mode. Note: When SLEEPB = L, the ENB1/2 pins does not use OPEN, set the ENB1/2 pins to L or H. © 20 20 4 2020-12-10 Toshiba Electronic Devices & Storage Corporation
