TC78S121FTG

TC78S121FTG TOSHIBA CD Process Integrated Circuit Silicon Monolithic TC78S121FTG PWM Chopper Type Dual-Stepping Motor Driver The TC78S121FTG is a PWM chopper type dual-stepping motor driver. Two stepping motor drivers can drive up to four brushed DC motors. Incorporating two pairs of H-bridge drivers, the TC78S121FTG can drive two DC motors or a single stepping motor. Features ● Single-chip motor driver for bipolar stepping motor control QFN48-P-0707-0.50 Weight: 0.137 (g) ● Monolithic IC structured by CD process. ● Low ON-resistance: Ron = 0.6 Ω In large mode, ON-resistance of combined H-bridges is (Ron) is 0.3 Ω ● Over-current detection (ISD), thermal shutdown (TSD) and VM power-on reset circuits ● Since the IC incorporates the VCC regulator for internal circuit operation, an external power supply (5 V) is not required. ● Package: QFN48-P-0707-0.50 ● Maximum output withstand voltage: 40 V (max) ● Output current: 2.0 A (max) in DC Motor (S) mode; 1.5 A (max) in Stepping Motor (S) mode ● Chopping frequency can be set by external capacitor and resistor. High-speed chopping is possible at 100 kHz or higher. © 2016-2017 1 Toshiba Electronic Devices & Storage Corporation 2017-09-15 Block Diagram (Stepping Motor (S) × 2-ch Control Mode) TC78S121FTG PHASE_X IN_X1 IN_X2 MODE0 MODE1 MODE2 D_TBLANK ALERT VREF_X VM RS_A RS_B RS_C RS_D Step Decoder (Input Logic) Current Level Set Torque Control 2bit D/A (Angle Control) Current Feedback (×2) VRS1 RS COMP1 VRS2 RS ...