STPIC44L02PTR STMicroelectronics, STPIC44L02PTR Datasheet

STPIC44L02PTR

Manufacturer Part Number

STPIC44L02PTR

Description

IC PRE-FET DRIVER 4CH S/P 24SSOP

Manufacturer

STMicroelectronics

Type

Driverr

Datasheet

1.STPIC44L02PTR.pdf (21 pages)

Specifications of STPIC44L02PTR

Number Of Drivers/receivers

4/0

Voltage - Supply

4.5 V ~ 5.5 V

Mounting Type

Surface Mount

Package / Case

24-SSOP

Rise Time

1500 ns

Fall Time

2000 ns

Supply Voltage (min)

4.5 V

Supply Current

3 mA

Maximum Operating Temperature

+ 125 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Number Of Drivers

Number Of Outputs

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Protocol

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Current page: 1 of 21
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DESCRIPTION

The STPIC44L02 is a low-side predriver that

provides serial and parallel input interfaces to

control four external FET power switches.

It is mainly designed to provide low-frequency

switching, inductive load applications such as

solenoids and relays. Fault status is available in a

serial-data format. Each driver channel has

independent off-state open-load detection and

on-state shorted load short to battery detection.

The STPIC44L02 offers a battery over voltage and

undervoltage detection and shutdown. If a fault

occurs while using the STPIC44L02, the channel

transitates into a low duty cycle, pulse width

modulated (PWM) signal as long as the fault is

present.

These devices provide control of output channels

through a serial input interface or a parallel input

interface. A command to enable the output from

July 2003

4-CHANNEL SERIAL-IN PARALLEL-IN LOW

SIDE PRE-FET DRIVER

DEVICES ARE CASCADABLE

INTERNAL 55V INDUCTIVE LOAD CLAMP

AND VGS PROTECTION CLAMP FOR

EXTERNAL POWER FETS

INDEPENDENT SHORTED-LOAD AND

SHORT-TO-BATTERY FAULT DETECTION

ON ALL GATE TERMINALS

INDEPENDENT OFF-STATE OPEN-LOAD

FAULT SENSE

OVER-BATTERY-VOLTAGE LOCKOUT

PROTECTION AND FAULT REPORTING

UNDER-BATTERY VOLTAGE LOCKOUT

PROTECTION

ASYNCRONOUS OPEN-GATE FAULT FLAG

DEVICE OUTPUT CAN BE WIRED OR WITH

MULTIPLE DEVICES

FAULT STATUS RETURNED THROUGH

SERIAL OUTPUT TERMINAL

INTERNAL GLOBAL POWER-ON RESET OF

DEVICE AND EXTERNAL RESET TERMINAL

HIGH IMPEDANCE CMOS COMPATIBLE

INPUTS WITH HYSTERESIS

TRANSITION FROM THE GATE OUTPUT TO

A LOW DUTY CYCLE PWM MODE WHEN A

SHORTED LOAD FAULT OCCURS

4 CHANNEL SERIAL AND PARALLEL

either interface enables the respective channels

gate output to the external FET. The serial

interface is recommended when the number of

signals between the control device and the

predriver are minimized and the speed of

operation is not critical. In applications where the

predriver

asynchronously, the parallel input interface is

recommended.

For serial operation, the control device must

transitate CS from high to low to activate the serial

input interface. When this occurs, SDO, is

enabled, fault data is latched into the serial

interface, and the fault flag is refreshed. Data is

clocked into the serial registers on low to high

transitions of SCLK through SDI. Each string of

data must consist of at least four bits of data. In

applications where multiple devices are cascaded

together, the string of data must consist of four bits

for each device. A high data bit turns the

respective output channel on and a low data bit

turns it off. Fault data for the device is clocked out

of SDO as serial input data is clocked into the

device. Fault data consists of fault flags for

shorted load and open load flags (bits 0-3) for

each of the four output channels. Fault register

bits are set or cleared asynchronously to reflect

the current state of the hardware. A fault must be

present when CS is transitated from high to low to

be captured and reported in the serial fault data.

New faults cannot be captured in the serial

high after all of the serial data has been clocked

into the device. A low to high transition of CS

transfers the last four bits of serial data to the

LOW SIDE PRE-FET DRIVER

must

respond

STPIC44L02

SOP

very

quickly

1/21

Related parts for STPIC44L02PTR

STPIC44L02PTR Summary of contents

Page 1

SERIAL-IN PARALLEL-IN LOW SIDE PRE-FET DRIVER DEVICES ARE CASCADABLE INTERNAL 55V INDUCTIVE LOAD CLAMP AND VGS PROTECTION CLAMP FOR EXTERNAL POWER FETS INDEPENDENT SHORTED-LOAD AND SHORT-TO-BATTERY FAULT DETECTION ON ALL GATE TERMINALS INDEPENDENT OFF-STATE OPEN-LOAD FAULT SENSE OVER-BATTERY-VOLTAGE LOCKOUT ...

Page 2

... Shorted load fault conditions must be present for at least the shorted load deglicth time, ORDERING CODES Type STPIC44L02PTR 2/ flagged as a fault. A fault flag is (STBDG) sent to the control device as well as the serial fault register bits ...

Page 3

Figure 1 : Schematic Diagram STPIC44L02 3/21 ...

Page 4

STPIC44L02 PIN DESCRIPTION PIN No SYMBOL I/O 1 FLT I Fault Flag. FLT is a logic level open-drain output that provides a real time fault flag for shorted-load, open-load, over-battery voltage, under-battery voltage faults. The device can be ORed with ...

Page 5

Figure 2 : Pin Configuration ABSOLUTE MAXIMUM RATINGS Symbol V Logic Supply Voltage (See Note Battery Supply Voltage BAT V Logic Input Voltage Range I V Output Voltage (SDO and FLT Output Voltage O V ...

Page 6

STPIC44L02 ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING FREE-AIR TEMPERATURE RANGE (unless otherwise specified.) Symbol Parameter I Supply Current BAT I Supply Current CC V Over Battery Voltage (ovsd) Shutdown V Over Battery Voltage Reset hys(ov) Hysteresys V Under Battery Voltage (uvsd) ...

Page 7

SWITCHING CHARACTERISTICS (V Symbol Parameter t Short to Battery, Shorted (STBFM) Load, Open Load Fault Mask Time t Short to Battery, Shorted (STBDG) Load, Deglitch Time t Propagation Turn-On Delay PLH Time IN0-IN3 to Gate0-Gate3 t Propagation Turn-Off ...

Page 8

STPIC44L02 Figure 3 : Switching Time Figure 4 : Setup Time CS to SCLK 8/21 ...

Page 9

Figure 5 : Propagation Delay Time Figure 6 : Propagation Delay Time Figure 7 : SDO Switching Time STPIC44L02 9/21 ...

Page 10

STPIC44L02 Figure 8 : SDO Switching Time Figure 9 : FLT Switching Time PRINCIPLES OF OPERATION SERIAL DATA OPERATION The STPIC44L02 offers serial input interface to the microcontroller to transfer control data to the predriver and fault data back to ...

Page 11

Figure 10 : Serial Programming Example Figure 11 : 8-Bit Serial Programming Example (single device) STPIC44L02 11/21 ...

Page 12

STPIC44L02 Figure 12 : 8-Bit Serial Programming Example (two predrivers cascated) Figure 13 : Fault Reading Example PARALLEL INPUT DATA OPERATION In addition to the serial interface the STPIC44L02 also provides a parallel microcontroller. The output turns on when either ...

Page 13

The STPIC44L02 monitors the drain voltage of each channel to detect shorted load conditions. The onboard deglitch timer starts running when the gate output to the power FET transitates from the off state to the on state. The timer provides ...

Page 14

STPIC44L02 Figure 15 : Normal Operation Figure 16 : Shorted Load Condition (Deglitch Time) OPEN LOAD The STPiC44L02 monitors the drain of each power FET for open circuit conditions that may exist. The 60 A current source is provided to ...

Page 15

After the deglitch delay time, the drain is checked to verify that it is greater than the fault reference voltage. When it is less than the reference voltage, a fault is flagged to the microcontroller through FLAT that ...

Page 16

STPIC44L02 Figure 19 : Open Load ConditionTime OVER-BATTERY-VOLTAGE SHUTDOWN The STPIC44L02 monitors the battery voltage to prevent the power FETs turning on in the event that the battery voltage is too high. This condition may occur due to voltage transients ...

Page 17

An under-battery-voltage fault is flagged to the controller through FLT. The under-battery voltage fault is not reported in the serial fault word. When an under-battery-voltage condition occurs, the device reports the battery fault but disables fault reporting for ...

Page 18

STPIC44L02 predriver and V network COMP connected to a Kelvin ground if available; otherwise, they should make single-point contact Figure 23 : External Reference Selection TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified T Figure 24 : Open Load Off State Detection ...

Page 19

SSOP24 MECHANICAL DATA DIM. MIN 0.05 A2 1.65 b 0.22 c 0.09 D 7.9 E 7.4 E1 5.00 e 0.65 BSC K 0˚ PIN 1 IDENTIFICATION 1 mm. TYP MAX. MIN. 2 ...

Page 20

STPIC44L02 Tape & Reel SSOP24 MECHANICAL DATA DIM. MIN 12 8.4 Bo 8.7 Ko 2.9 Po 3.9 P 11.9 20/21 mm. TYP MAX. MIN. 330 13.2 0.504 0.795 2.362 22.4 8.6 0.331 ...

Page 21

... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied ...

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