TPIC2603

6CHANNEL SERIAL INTERFACE LOW SIDE DRIVER

SLIS056A − FEBRUARY 1995 − REVISED MARCH 1996

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POST OFFICE BOX 655303

POST OFFICE BOX 1443

350-mA Continuous Current

Shorted-Load/Short-to-Battery Fault

Detection on All Drain Terminals

Sense on All Drain Terminals

Cycle Pulsed-Width-Modulation (PWM)

Mode for Over-Current Condition

Interface Fault Status

Output Terminal

description

The TPIC2603 is a monolithic low-side driver which

provides serial interface and diagnostics to control

six on-board power DMOS switches. Each channel

has independent OFF-state open-load sense,

ON-state shorted-load/short-to-battery protection,

over-battery-voltage-lockout

protection,

and

over-temperature sense with fault status reported

through the serial interface. The device also

provides inductive voltage transient protection for

each drain output. The TPIC2603 drives inductive

and resistive loads such as relays, valves, and

lamps.

Serial data input (SDI) is transferred through the serial register when CS is low on low-to-high transitions of the

serial clock (SCLK). Each string of data must consist of 8 or 16 bits of data. A logic high input data bit turns the

respective output channel ON and a logic low data bit turns it OFF. CS must be transited high after all of the serial

data has been clocked into the device. A low-to-high transition of CS transfers the last six bits of serial data to

the output buffer, places the serial data out (SDO) terminal in a high-impedance state, and re-enables the fault

register. Fault data for the device is sent out the SDO terminal. The first bit of the shift register is exclusively

ORed with the fault registers. When a fault exists, the SDI data is inverted as it is transferred out of SDO. Fault

data consists of fault flags for over-temperature (bit 6) and shorted/open-load (bits 0-5) for each of the six output

channels. Fault register bits are set or cleared asynchronously, when CS is high to reflect the current state of

the hardware. The fault must be present when CS is transited from high to low to be captured and reported in

the serial fault data. New faults cannot be captured in the serial register when CS is low.

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.

Copyright

 1996, Texas Instruments Incorporated

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DRAIN5

DRAIN4

SCLK

SDI

GND

GND

SDO

CS

DRAIN3

DRAIN2

DRAIN0

NC

NC

GND

GND

NC

NC

DRAIN1

NE PACKAGE

(TOP VIEW)

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DRAIN5

DRAIN4

SCLK

SDI

GND

GND

GND

GND

SDO

CS

DRAIN3

DRAIN2

DRAIN0

NC

NC

GND

GND

GND

GND

NC

NC

DRAIN1

DW PACKAGE

(TOP VIEW)

NC − No internal connection

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.