Professional IC Distribution & Technical Solutions

The TD6002P is a high-speed, high-voltage MOSFET driver IC manufactured by Toshiba.

Key Specifications:

• Supply Voltage (VCC): 10V to 20V
• Output Current (Peak): ±2.0A (sink/source)
• Propagation Delay Time (tPLH/tPHL): 60ns (typical)
• Rise/Fall Time (tr/tf): 25ns (typical)
• Operating Temperature Range: -40°C to +125°C
• Package: DIP-8 (Plastic)

Descriptions:

• Designed for driving power MOSFETs and IGBTs in high-speed switching applications.
• Features under-voltage lockout (UVLO) protection for both high-side and low-side drivers.
• Provides fast switching performance with minimal propagation delay.

Features:

• High-Speed Switching: Optimized for fast turn-on/off of power devices.
• High Output Current: Capable of sourcing/sinking up to 2A peak current.
• UVLO Protection: Prevents malfunction under low-voltage conditions.
• Wide Operating Voltage Range: Supports 10V to 20V supply.
• Compact Package: Available in an 8-pin DIP for easy integration.

This driver IC is commonly used in power supplies, motor control, and inverter applications.

# TD6002P: Application Analysis, Design Considerations, and Implementation

## Practical Application Scenarios

The TD6002P, a high-voltage, high-current Darlington transistor array from Toshiba, is designed for driving inductive loads in industrial and automotive systems. Its integrated open-collector outputs with clamp diodes make it ideal for interfacing between low-power logic circuits and high-power peripherals.

Industrial Automation: The TD6002P is commonly used in PLC (Programmable Logic Controller) output modules to control relays, solenoids, and small DC motors. Its ability to handle peak currents up to 500 mA per channel ensures reliable switching in noisy environments.

Automotive Systems: In automotive applications, the device drives actuators, LED lighting arrays, and fuel injectors. Its built-in suppression diodes protect against back-EMF from inductive loads, a critical feature in 12V/24V vehicle systems.

Consumer Electronics: The IC serves as an interface for driving small motors in appliances (e.g., dishwasher valves, printer mechanisms) where space and efficiency are constraints.

## Common Design Pitfalls and Avoidance Strategies

Thermal Management:

• *Pitfall:* Overheating due to inadequate heat dissipation in high-duty-cycle applications.
• *Solution:* Use PCB copper pours or external heatsinks for channels operating above 300 mA continuously. Derate current based on ambient temperature.

Voltage Spikes:

• *Pitfall:* Inductive kickback damaging outputs despite internal diodes.
• *Solution:* Add external Schottky diodes in parallel for fast-switching inductive loads (e.g., relays). Ensure diode ratings exceed the load’s energy (½LI²).

Logic-Level Mismatch:

• *Pitfall:* Input thresholds (1.5V min for TTL) may not align with modern 3.3V microcontrollers.
• *Solution:* Use level shifters or series resistors when driving from low-voltage GPIOs. Verify input current (≤2.5 mA per channel) to avoid overloading MCU pins.

## Key Technical Considerations

1. Output Configuration: Each of the seven Darlington pairs has a common emitter, requiring pull-up resistors or relay coils to be connected to VCC (up to 50V).

2. Input Compatibility: TTL/CMOS-compatible inputs simplify interfacing but require attention to leakage currents (max 50 µA).

3. Switching Speed: Turn-on/off times (~1 µs) limit high-frequency PWM applications; consider MOSFET alternatives for >10 kHz switching.

4. Supply Decoupling: Place a 100 nF ceramic capacitor near VCC to minimize noise in multi-channel operation.

By addressing these factors, designers can leverage the TD6002P’s robustness while mitigating risks in high-current switching applications.