TPD4112K DC Brushless Motor Driver
The TPD4112K from Toshiba is an intelligent high-voltage motor driver IC built for 3-phase DC brushless motors, combining PWM control, built-in protection, and efficient output, making it well suited to industrial and commercial power electronics. Designed with a max bus voltage (VBB) of up to 400-500 V and a control supply (VCC) typically around 15 V, it delivers stable performance even under high stress and load.
With features including internal PWM and 3-phase decode logic, built-in bootstrap circuits, IGBT output stages, fast recovery diodes (FRDs), as well as over-current, under-voltage, and thermal shutdown protection, this device offers efficiency and safety in one compact package. These protection features reduce risk of damage, contribute to longer operational life, and lower maintenance overhead.
This device is highly suitable for applications such as 3-phase BLDC (brushless DC) motor controllers used in industrial fans, pumps, compressors, robotics, and other small to medium power motor control systems. Its rotation-pulse (FG) output enables feedback or speed monitoring. The built-in Hall sensor inputs simplify interfacing in designs using Hall ICs or Hall amplifiers. All of this comes in a 23-pin HZIP package, helping with thermal dissipation and reliable mounting.
Durability and efficiency go hand in hand: the TPD4112K is fabricated using a high-voltage SOI process, includes thermal shutdown, and is rated for a junction temperature up to about 150 °C. These traits make it suitable for harsh environments, prolonged usage, and reliable operation in industrial settings. Whether in continuous operation or intermittent heavy use, it helps reduce downtime and improves system stability.
Key Specs
| Parameter | Specification |
|---|---|
| Manufacturer | Toshiba Semiconductor |
| Part Number / Type | TPD4112K — DC Brushless Motor Driver IC |
| Package | 23-pin HZIP (HZIP23-P) |
| Bus Voltage (VBB, max) | ~400-500 V |
| Control Supply Voltage (VCC) | ~15 V typical (operating control logic supply) |
| Output Stages | 3-phase IGBT bridge + fast recovery diodes (FRDs) |
| Protection Features | Over-current detection, under-voltage protection, thermal shutdown |
| Hall Sensor Inputs | U, V, W phase Hall inputs compatible with Hall IC / Hall amplifier |
| Rotation Pulse Output (FG) | Yes, for rotation / speed feedback |
| Operating Temperature (Junction) | −20 °C to +135 °C (typical), up to ~150 °C under certain conditions |
| Under-voltage Protection Threshold | VCC UV detect ~11-12 V typ., VBS UV etc. |
| PWM & Frequency Setup | External resistor / capacitor to set triangular wave / PWM frequency (around ~20 kHz typical) |
For more detailed information, please refer to the Toshiba datasheet.
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