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.
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)
