• Single-Phase Full-Wave Driving Predriver
  • Low Saturation Drive Using External P-channel Devices at Top and N-channel Devices in Bottom in H-bridge Configuration Enables High-Efficiency Low-Power Consumption Drive
• Variable Speed Control Possible With External PWM Input
  • Separately Excited Upper Direct PWM (f = 30 kHz) Control Method Ensures Quiet Speed Control
• Current Limiter Circuit Incorporated
  • Chopper Type Current Limiting Made at Start-up and During Lock
• Reactive Current Cut Circuit Incorporated
  • Reactive Current Before Phase Change Is Cut to Enable Silent and Low-Consumption Drive
• Minimum-Speed Setting Pin
  • Minimum Speed Can be Set With External Resistor
• Soft-Start Setting Pin
• Lock Protection and Automatic Reset Circuits Incorporated
• Rotation Speed Detection (FG) and Lock Detection (RD) Output
• Thermal Shutdown Circuit Incorporated

• Server Fans
• Appliance Fans

The TMP815 device is a single-phase bipolar driving motor predriver with a variable-speed function that is compatible with an external PWM signal. A highly efficient and quiet variable-drive fan motor with low-power consumption can be achieved with few external parts.

This device is best suited for driving of the servers requiring large air flow and large current or the fan motors of consumer appliances.