TB6525F

The TB6525F is a kind of single-chip IC for VTR movie cylinder motor controllers and loading motor controllers. The cylinder area is a soft-switching pre-driver based on a 3-phase full-wave sensorless drive and 180 degree trapezoidal wave commutation control. The loading area is a pre-driver for driving the bridge driver, and is equipped with a tape top/tape and sensor, a reel FG amplifier, and a current limiter current.

There are some features of TB6525F as follows: first is about the cylinder area: (1)built-in FG amplifier and PG amplifier; (2)torque command: analog output with PWM signal input (built-in integral amplifier); (3)detects the upper VCE and outputs the analog voltage used by the external SW regulator; (4)built-in current limiter: output current detection with feedback resistance; (5)built-in short-circuit protection function; then is about the loading area: (1)four modes: forward, reverse, stop and break; (2)built-in current limiter: output current detection with feedback resistance (equipped with a a limiter status output pin); (3)built-in tape top end detection function; (4)two built-in reel FG amplifiers; (5)built-in short-circuit protection function.

The following is about  the maximum ratings of TB6525F (Ta=25): (1)logic power voltage, VCC: 8 V at VCC pin; (2)battery power voltage, VB: 8 V at VB pin; (3)output pin voltage, VN: 8 V at pins YU1, YU2, YU3, YL1, YL2, YL3, LU1, LU2, LL1, LL2; (4)input pin voltage, V1: -0.3 to VCC+0.3 V at pins STB, CLK, F/R, PGIN, FGIN, ECIN, YCS, BIN, BRK, TOPIN, ENDIN, LIMEN, RF, RS, LS1, LS2, DEC1, DEC2, YVM, YM1, YM2, YM3; (5)power dissipation, PD: 0.95 W; (6)operating temperature, Topr: -20 to 75; (7)storage temperature, Tstg: -55 to 125. Then is about the recommended operating conditions: (1)logic power voltage, VCC: 2.7 V min, 2.9 V typ and 5.5 V max; (2)battery power voltage, VB: 4.5 V min, 4.78 V typ and 7.3 V max; (3)clock frequency, fCLK: 300 kHz min, 333.3 kHz typ and 500 kHz max.