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Fan Motor Pre-Driver


Package | PIN: PW | 20
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $0.81
10-24 $0.73
25-99 $0.67
100-249 $0.57
250-499 $0.53
500-749 $0.43
750-999 $0.35
1000+ $0.31


  • Predriver for Single-Phase Full-Wave Drive
    • PNP-NMOS is Used as an External Power TR,
      Enabling High-Efficiency Low-Consumption
      Drive by Means of the Low-Saturation Output
      and Single-Phase Full-Wave Drive (PMOS-
      NMOS Also Applicable)
  • External PWM Input Enabling Variable Speed
    • Separately-Excited Upper Direct PWM (f = 25
      kHz) Control Method, Enabling Highly Silent
      Speed Control
  • Compatible with 12-V, 24-V, and 48-V Power
  • Current Limiter Circuit Incorporated
    • Chopper Type Current Limit at Start
  • 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. Start Assistance Circuit Enables Start
      at Extremely Low Speed.
  • Constant-Voltage Output Pin for Hall Bias
  • Lock Protection and Automatic Reset Functions
  • FG (Rotation Speed Detection) and RD (Lock
    Detection) Output

Texas Instruments  TMP814PWR

The TMP814 is a single-phase bipolar variable speed fan motor predriver that works with an external PWM signal. A highly efficient, quiet and low-power consumption motor driver circuit, with a large variable speed, can be implemented by adding a small number of external components.

This device is optimal for driving large scale fan motors (with large air volume and large current) such as those used in servers and consumer products.