TB9051FTG Toshiba Bi-CMOS Linear Integrated Circuit Silicon Monolithic TB9051FTG PWM type single channel H-Bridge DC brushed motor driver for automotive use 1. Outline This product is a motor driver IC which incorporates the output driver for the direct drive of a DC brushed motor intended for the automotive use. The motor drive output can be highly efficient operation by the PWM P-QFN28-0606-0.65-001 control which realizes low-on resistance. Forward / Reverse / brake mode can be selected according to PWM1 signal and PWM2 signal, and the motor operation mode and stop mode can be selected by ENABLE pin. Moreover, the output current capacity is 5A (max), it is suitable for various automotive applications such as a throttle and valve control, various engine bulbs, storing of door mirrors, and a seat positioning. 2. Application Automotive applications such as a throttle and valve control, various engine bulbs, and storing of door mirrors 3. Feature Motor driver block: Single channel H-Bridge driver (Ron(Pch+Nch))<0.45 (Max Tj = 150C, VBAT = 8 V) Abnormality detection function: Over-current detection, over-temperature detection, VBAT undervoltage detection, VCC undervoltage detection, and VCC high voltage detection Built-in initial diagnosis function: Power supply abnormality detection circuit (VBAT undervoltage, VCC undervoltage and VCC high voltage.) Output type: PWM control output Motor operation: Forward /Reverse/ Brake Current limitation control: Current limiter with chopper type Output high-side current monitoring function (OCM pin) DIAG output Built-in the through current prevention circuit Operating voltage range: VBAT = 4.5 to 28 V (Maximum ratings of power supply voltage 40V (max): 0.5 sec.) Operating temperature range: Ta = -40C to 125C Compact type flat package: P-QFN28-0606-0.65-001 AEC-Q100 Qualified If the label of shipping box is indicated to be G /RoHS COMPATIBLE2, G /RoHS Chemical symbol(s) of controlled substance(s), and RoHS COMPATIBLE or RoHS COMPATIBLE, Chemical symbol(s) of controlled substance(s) >MCV, this product is compliant with the EU RoHS Directive (2011 / 65 / EU) in the meaning of the statement. 2016-2019 1 / 49 Toshiba Electronic Devices & Storage Corporation Ver.1.1 2019-03-14 TB9051FTG 4. Block Diagram 5V ECU Battery VBAT VCC POR 5.1k Low voltage Initial Initial detection, and high diagnosis diagnosis voltage detection Low voltage detection DIAG Control Over current detection POR PWM1 Low voltage detection OUT1 Microcontroller High voltage detection PWM2 Thermal detection Pre-Driver Over current detection EN Hi-side current M EN circuit monitoring ENB OCC OUT2 Over-temperature OCM detection OSC circuit PGND AGND Figure 4.1 Block diagram Note: Some of the functional blocks, circuits in the block diagram may be omitted or simplified for explanatory purposes. The signal which is performed the logical operation of the EN and ENB pin input, is not connected to each driver output circuit. However, each EN and ENB signal is connected independently to the output circuit of each driver. Ver.1.1 2019-03-14 2 / 49