SLVS787A May   2009  – June 2015 TMP816

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  6. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Speed Control
      2. 6.3.2 Soft-Start
      3. 6.3.3 Lock Detection
      4. 6.3.4 Current Limit
      5. 6.3.5 Speed Output
      6. 6.3.6 Drive Frequency Selection
    4. 6.4 Device Functional Modes
  7. 7 Applications and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Curves
  8. 8 Power Supply Recommendations
  9. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  10. 10Device and Documentation Support
    1. 10.1 Community Resources
    2. 10.2 Trademarks
    3. 10.3 Electrostatic Discharge Caution
    4. 10.4 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 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 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

2 Applications

  • Server Fans
  • Appliance Fans

3 Description

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.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TMP816 TSSOP (PW) 4.40 mm × 6.50 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

TMP816 tmp816_bd_slvs787.gif