TMP815 Texas instruments

TMP815

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TMP815

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Описание

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)
Output
Thermal Shutdown Circuit Incorporated

Rating	Catalog
Architecture	Gate driver
Control topology	Sensored, Trapezoidal
Control interface	1xPWM
Vs (min) (V)	6
Vs ABS (max) (V)	18
Features	Rotor Lock Protection, Tach/FG Feedback
Operating temperature range (°C)	-40 to 85