The TB6600HG is a PWM chopper-type bipolar stepping motor driver from Toshiba, with maximum operating voltage of 50V, output current of 4.5A, supporting 1\/32 microstepping, in an HZIP-25 package, widely used in 3D printers and CNC controllers.<\/p>\n
TB6600HG Overview The TB6600HG is a PWM chopper-type bipolar stepping motor driver from Toshiba, with maximum operating voltage of 50V, output current of 4.5A, supporting 1\/32 microstepping, in an HZIP-25 package, widely used in 3D printers and CNC controllers. Key Features Supply voltage: 8V-50V Maximum output current: 4.5A Microstep resolution: 1\/32 Chopper frequency: 100kHz Thermal […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[36,13],"tags":[],"chip_brand":[169],"class_list":["post-8028","post","type-post","status-publish","format-standard","hentry","category-gate-driver-ics","category-integrated-circuits-ics","chip_brand-toshiba"],"acf":{"brief_explanation":"Stepper motor driver, 4.5A, 50V, HZIP-25","date_code":"","package_case":"HZIP-25 (28.5 x 15.9 x 5.0 mm)","in_stock":2877,"datasheet":"https:\/\/toshiba.semicon-storage.com\/info\/TB6600HG_datasheet_en_20160610.pdf?did=1468","price":"$6.50 @ 1ku","product_introduction":"The TB6600HG is a PWM chopper-type bipolar stepper motor driver IC from Toshiba in a HZIP-25 through-hole package, supporting motor voltages up to 50 V and output currents up to 5.0 A peak (4.5 A operating maximum). It features microstepping resolution of full step, 1\/2, 1\/4, 1\/8, and 1\/16 with built-in sinusoidal PWM current control. The device integrates MOSFET H-bridge outputs with 0.4 Ohm typical on-resistance (upper plus lower), over-current detection, thermal shutdown at 170 C, and under-voltage lockout. Step and direction interface enables simple microcontroller control with built-in 100 kOhm input pull-down resistors.","working_principle":"The TB6600HG controls bipolar stepper motor current using a fixed-off-time PWM chopper scheme. The H-bridge MOSFET outputs drive current through the motor winding in the forward or reverse direction based on the phase logic. Current flows through the winding, through the sense resistor to ground. When the voltage across the sense resistor exceeds the reference voltage set by the VREF input, the comparator triggers and the bridge enters the decay mode for the programmed off-time period. During slow decay, both low-side MOSFETs are turned on, allowing current to recirculate through the winding. During fast decay, the bridge reverses polarity, actively driving current back toward the supply. The TB6600HG uses a 40 percent fast decay mode where the final 40 percent of the off-time is fast decay and the remainder is slow decay, optimizing current regulation across the speed range. The microstepping logic divides each full step into up to 16 microsteps by modulating the current reference levels through an internal DAC, producing smooth sinusoidal winding currents. The CLK input advances the microstep sequencer on each rising edge, and the CW\/CCW input sets the rotation direction. The M1, M2, and M3 inputs select the step resolution mode. The standby mode (M1=M2=M3=low or high) disables all outputs to minimize power consumption.","pin_description":"
| Pin<\/th> | Name<\/th> | Description<\/th><\/tr> | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1<\/td> | OUT1A<\/td> | H-bridge A output 1; motor winding A connection<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 2<\/td> | PGND1<\/td> | Power ground for H-bridge A<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 3<\/td> | OUT2A<\/td> | H-bridge A output 2; motor winding A connection<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 4<\/td> | PGND2<\/td> | Power ground for H-bridge B<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 5<\/td> | OUT2B<\/td> | H-bridge B output 2; motor winding B connection<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 6<\/td> | PGND3<\/td> | Power ground<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 7<\/td> | OUT1B<\/td> | H-bridge B output 1; motor winding B connection<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 8-9<\/td> | VCC (x2)<\/td> | Motor power supply (8 V to 42 V); both pins must be connected<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 10<\/td> | CLK<\/td> | Step clock input; rising edge advances one microstep<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 11<\/td> | CW\/CCW<\/td> | Direction input; high = CW, low = CCW<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 12<\/td> | ENABLE<\/td> | Enable input; low = outputs active, high = outputs disabled (Hi-Z)<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 13<\/td> | RESET<\/td> | Reset input; low = resets phase to initial position<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 14<\/td> | M1<\/td> | Microstep mode select bit 1<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 15<\/td> | M2<\/td> | Microstep mode select bit 2<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 16<\/td> | M3<\/td> | Microstep mode select bit 3<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 17<\/td> | TQ<\/td> | Torque setting input; adjusts output current ratio<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 18<\/td> | VREF<\/td> | Current reference voltage; sets peak winding current via external resistor divider<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 19<\/td> | OSCM<\/td> | Chopping frequency setting; connect external resistor (51 kOhm = 40 kHz)<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 20<\/td> | ALERT<\/td> | Over-current detection output; active low<\/td><\/tr> | ||||||||||||||||||||||||||||||||||||
| 21<\/td> | MO<\/td> | Phase monitor output; indicates current step position<\/td><\/tr><\/table>","application_scenarios":"
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