Datasheet TB67H450FNG (Toshiba) - 9

TB67H450FNG
Operation Mode of Output Transistor
VM VM VM U1 U2 U1 U2 U1 U2 OFF ON OFF ON OFF OFF Load Load Load L1 L2 L1 L2 L1 L2 OFF ON ON OFF ON ON RS pin RS pin RS pin RRS RRS RRS Charge mode Fast mode Slow mode A current flows into the motor coil. The energy of the motor coil A current circulates around the is fed back to the power motor coil and this IC.
Operation Function of Output Transistor
Mode U1 U2 L1 L2 Charge ON OFF OFF ON Fast OFF ON ON OFF Slow OFF OFF ON ON Note: The parameters shown in the table above are examples when the current flows in the directions shown in the figures above. For the current flowing in the reverse direction, the parameters change as shown in the table below. VM VM VM U1 U2 U1 U2 U1 U2 OFF ON ON OFF OFF OFF Load Load Load L1 L2 L1 L2 L1 L2 ON OFF OFF ON ON ON RS pin RS pin RS pin RRS RRS RRS Charge mode Fast mode Slow mode A current flows into the motor The energy of the motor coil A current circulates around the coil. is fed back to the power motor coil and this IC. Mode U1 U2 L1 L2 Charge OFF ON ON OFF Fast ON OFF OFF ON Slow OFF OFF ON ON This IC controls the motor current to be constant by 3 modes listed above. The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purposes. Note: In the timing of an output switching, the time to prevent a through current is predefined (200 ns to 300 ns (design value)). 9 2019-04-01