TMP816 Datasheet, PDF (1/12 Pages) Texas Instruments – VARIABLE-SPEED SINGLE-PHASE FULL-WAVE FAN-MOTOR PRE-DRIVER

TMP816
www.ti.com ........................................................................................................................................................................................................ SLVS787 – MAY 2009
VARIABLE-SPEED SINGLE-PHASE FULL-WAVE FAN-MOTOR PRE-DRIVER
FEATURES
1
• Pre-Driver 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
OUT2P
OUT2N
V
CC
VLIM
SENSE
RMI
VTH
CPWM
FG
RD
PW PACKAGE
(TOP VIEW)
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
OUT1P
OUT1N
SS
SGND
6VREG
ROFF
CT
IN+
HB
IN–
DESCRIPTION/
ORDERING INFORMATION
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.
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.
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T_A
–30°C to 95°C
TSSOP – PW
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
ORDERABLE PART NUMBER
Reel of 2000
TMP816PWR
TOP-SIDE MARKING
TMP816
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009, Texas Instruments Incorporated