TMP814PWR

The TMP814PWR is a versatile single-phase bipolar variable speed fan motor predriver designed to work seamlessly with an external PWM signal. With its efficient and low-power consumption motor driver circuit, this device allows for the creation of a high-quality, quiet, and customizable variable speed motor system with minimal additional components required

Key Features

• 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
  Control
  • 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
  Supplies
• 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
  Incorporated
• FG (Rotation Speed Detection) and RD (Lock
  Detection) Output