TPIC9201_08 Datasheet, PDF (1/20 Pages) Texas Instruments – MICROCONTROLLER POWER SUPPLY AND MULTIPLE LOW-SIDE DRIVER

www.ti.com
TPIC9201
MICROCONTROLLER POWER SUPPLY
AND MULTIPLE LOW-SIDE DRIVER
SLIS115D – APRIL 2005 – REVISED FEBRUARY 2008
FEATURES
1
•2 Eight Low-Side Drivers With Internal Clamp for
Inductive Loads and Current Limiting for Self
Protection
– Seven Outputs Rated at 150 mA and
Controlled Through Serial Interface
– One Output Rated at 150 mA and
Controlled Through Serial Interface and
Dedicated Enable Pin
• 5-V ± 5% Regulated Power Supply With
200-mA Load Capability at V_IN Max of 18 V
• Internal Voltage Supervisory for Regulated
Output
• Serial Communications for Control of Eight
Low-Side Drivers
• Enable/Disable Input for OUT1
• 5-V or 3.3-V I/O Tolerant for Interface to
Microcontroller
• Programmable Power-On Reset Delay Before
RST Asserted High, Once 5 V Is Within
Specified Range (6 ms Typ)
• Programmable Deglitch Timer Before RST
Asserted Low (40 µs Typ)
• Zero-Voltage Detection Signal
• Thermal Shutdown for Self Protection
APPLICATIONS
• Electrical Appliances
– Air Conditioning Units
– Ranges
– Dishwashers
– Refrigerators
– Microwaves
– Washing Machines
• General-Purpose Interface Circuits, Allowing
Microcontroller Interface to Relays, Electric
Motors, LEDs, and Buzzers
N OR PWP PACKAGE
(TOP VIEW)
ZVS 1
OUT1 2
OUT2 3
OUT3 4
OUT4 5
OUT5 6
OUT6 7
OUT7 8
OUT8 9
GND 10
20 SYN
19
V
IN
18
5V
OUT
17 SCLK
16 NCS
15 MOSI
14 RST
R 13
DELAY
12 EN1
11 GND
DESCRIPTION/ORDERING INFORMATION
The power supply provides regulated 5-V output to power the system microcontroller and drive eight low-side
switches. The ac zero-detect circuitry is monitoring the crossover voltage of the mains ac supply. The resultant
signal is a low-frequency clock output on the ZVS terminal, based on the ac-line cycle. This information allows
the microcontroller to reduce in-rush current by powering loads on the ac-line peak voltage.
A serial communications interface controls the eight low-side outputs; each output has an internal snubber circuit
to absorb the energy in the inductor at turn OFF. Alternatively, the system can use a fly-back diode to V_IN to help
recirculate the energy in an inductive load at turn OFF.
T_A
–40°C to 125°C
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
ORDERABLE PART NUMBER
PDIP – N
Tube of 20
TPIC9201N
PowerPAD™ – PWP
Reel of 2000
Tube of 70
TPIC9201PWPR
TPIC9201PWP
TOP-SIDE MARKING
TPIC9201N
IC9201
(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.
PowerPAD is a trademark of Texas Instruments.
2
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 © 2005–2008, Texas Instruments Incorporated