TMP816 Texas instruments

TMP816

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TMP816

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Описание

The TMP816 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. The TMP816 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.

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 Enables Variable-Speed Control
- Separately-excited upper direct PWM
  (f = 25 kHz) control method, enabling highly
  silent speed control
Current Limiter Circuit
- Chopper-type current limit at start
Reactive Current-Cut Circuit
- 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. The start assistance circuit enables
  start at extremely low speed.
Constant-Voltage Output Pin for Hall Bias
Lock Protection and Automatic Reset Functions
Rotation Speed Detection (FG) and Lock
Detection (RD) Outputs

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