Toshiba Semiconductor and Storage TB62214AFG,C8,EL

Overview

TB62214AFG,C8,EL from Toshiba is a BiCD monolithic two-phase bipolar stepping motor driver IC with PWM constant-current control, 40 V/2.0 A absolute maximum ratings, clock-input excitation, and integrated thermal/overcurrent shutdown. It drives NEMA 17–23 stepper motors in industrial motion control systems requiring precise microstepping-compatible excitation modes.

For engineers reviewing the TB62214AFG,C8,EL datasheet, TB62214AFG,C8,EL pinout, TB62214AFG,C8,EL application, or TB62214AFG,C8,EL equivalent, this page delivers verified electrical specs, HSOP28 package mapping, mixed-decay timing behavior, excitation mode selection logic, and real-world motor drive design constraints - all confirmed from Toshiba's official TB62214AFG/AFTG datasheet (Rev. 2014-10-01).

Technical Context

The TB62214AFG,C8,EL implements a CR-oscillator-based PWM chopper with fixed 37.5% mixed-decay timing (6/16 clocks), enabling stable current regulation across two-phase, 1-2-phase, and W1-2-phase excitation sequences. Its dual H-bridge output stage uses DMOS FETs fabricated in BiCD process, delivering 1.0 Ω typical R_DS(on) per half-bridge path.

Control logic includes synchronous clock-edge stepping (100 kHz max f_CLK), bidirectional rotation via CW/CCW pin, electric angle reset (RESET), and MO_OUT monitor output synchronized to rotor position. Protection features are hardware-asserted: TSD at 150°C (typ.), ISD trip ≥2.0 A per phase, and POR for VM/VCC ramp-up.

Key Specifications

Pinout & Package

Package: HSOP28-P-0450-0.80 - 28-pin heat-sink exposed pad, 0.80 mm pitch, 11.0 × 9.0 × 1.7 mm body, 0.79 g typical weight.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bipolar stepper motor driver applications.

Compared with STSPIN220TR and MP6500GQ-Z, the TB62214AFG,C8,EL uniquely combines hardware-configurable excitation modes, MO_OUT rotor feedback, and true clock-input stepping - making it optimal for deterministic, MCU-light motion systems where timing predictability and fault visibility are critical.

Availability

TB62214AFG,C8,EL is available at Aetrix Electronics and suitable for industrial CNC positioning, automated optical inspection, medical infusion pump actuation, lab automation liquid handling, and precision motion control systems requiring stable component supply and long-term lifecycle support.

Supply support for TB62214AFG,C8,EL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Toshiba Electronic Devices & Storage Corporation designs high-reliability analog and power ICs for industrial, automotive, and consumer applications, with emphasis on robustness and system-level integration.

The TB62214AFG,C8,EL belongs to Toshiba's BiCD stepping motor driver family, engineered specifically for cost-sensitive, high-volume motion control systems needing hardware-driven excitation and embedded protection without MCU overhead.

FAQ

What is the maximum clock frequency supported by TB62214AFG,C8,EL?

The TB62214AFG,C8,EL supports a maximum CLK input frequency of 100 kHz, with minimum high and low pulse widths of 300 ns and 250 ns respectively. This allows up to 100,000 steps per second in full-step mode. Exceeding this frequency may cause missed steps or erratic motor behavior due to insufficient internal timing margin, as confirmed in the AC Electrical Characteristics table (Rev. 2014-10-01, p.11).

How does the MO_OUT pin function in TB62214AFG,C8,EL?

The MO_OUT pin on TB62214AFG,C8,EL is an open-drain electric angle monitor output synchronized to rotor position, providing real-time feedback for stall detection or closed-loop verification. It goes low during RESET and tracks stepping sequence phase transitions. Its 3.3–5.5 V output swing (with pull-up) enables direct interfacing with 3.3 V or 5 V MCUs without level-shifting, as specified in the Operating Ranges table (p.9).

What is the recommended current-sensing resistor value for 1.2 A operation with TB62214AFG,C8,EL?

For 1.2 A per-phase output current, use R_S = (V_ref/5) ÷ I_OUT. With V_ref = 3.0 V (typical), R_S = (3.0/5) ÷ 1.2 = 0.5 Ω. A 0.5 Ω, ≥0.5 W metal-film resistor is recommended to maintain ±5% current accuracy and avoid thermal drift. This calculation follows the "Calculation of the Predefined Output Current" section (p.15) and aligns with the V_RS = ±1.0 V operating range (p.9).

Does TB62214AFG,C8,EL require separate logic and motor power supplies?

No - TB62214AFG,C8,EL integrates an on-chip voltage regulator that derives VCC (5 V logic supply) directly from the VM motor rail (10–38 V). Only a single VM supply and local 10 µF ceramic bypass on VCC are required. This eliminates external regulators and simplifies power architecture, as stated in the product overview and confirmed in the Operating Ranges table (p.9) and Block Diagram (p.4).

How does thermal shutdown behave during sustained overload with TB62214AFG,C8,EL?

When junction temperature exceeds 150°C (typ.), TB62214AFG,C8,EL triggers thermal shutdown (TSD), disabling all outputs while retaining their last state. Recovery requires either cycling VM power or setting both D_MODE_1 and D_MODE_2 to Low. The TSD threshold has ±20°C tolerance (140–170°C), and prolonged operation near Tj(max) risks permanent damage - hence derating to ≤120°C is advised per datasheet note (p.8–9).