NCV7512
FLEXMOSt Quad Low-Side
Pre-Driver
The NCV7512 programmable four channel low−side MOSFET
driver is one of a family of FLEXMOS
TM
automotive grade products
used for driving logic−level MOSFETs. The product is controllable
by any combination of SPI (Serial Peripheral Interface) or parallel
inputs.
Programmable features include optional fault recovery, shorted
load detection threshold, fault retry timing, and fault masking mode.
The programmable refresh time allows operation in a
power−limiting PWM mode.
The device offers 3.3 V / 5 V compatible logic inputs and the serial
output driver can be powered from either 3.3 V or 5 V supplies.
Power−on reset of the supply pin provides for a controlled power up
and power down. Two enable inputs are supplied. ENA1 provides a
global on/off control with a reset function for internal circuitry.
ENA2 controls the output stage (during initialization).
Each channel independently monitors its external MOSFET’s
drain voltage for fault conditions. Shorted load fault detection
thresholds are fully programmable using an externally programmed
reference voltage and a combination of four discrete internal ratio
values. The ratio values are SPI selectable and allow different
detection thresholds for each pair of output channels. Open load fault
detection threshold is a function of a percentage of the power supply
voltage (VCC1). Fault information for each channel is 2−bit encoded
by fault type and is available through SPI communication.
The FLEXMOS family of products offers application scalability
through choice of external MOSFETs.
Features
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MARKING
DIAGRAM
32 LEAD LQFP
FT SUFFIX
CASE 873A
NCV7512
AWLYYWWG
A
WL
YY
WW
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
ORDERING INFORMATION
Device
NCV7512FTG
Package
LQFP
(Pb−Free)
Shipping†
250 Units/Tray
•
•
•
•
•
•
NCV7512FTR2G
•
•
•
•
16−Bit SPI with Frame Error Detection
3.3 V/5 V Compatible Parallel and Serial Control Inputs
3.3 V/5 V Compatible Serial Output Driver
Two Enable Inputs
Open−Drain Fault and Status Flags
Programmable
−
Shorted Load Fault Detection Thresholds
−
Fault Recovery Mode
−
Fault Retry Timer
−
Flag Masking
Load Diagnostics with Latched Unique Fault Type Data
−
Shorted Load
−
Open Load
−
Short to GND
Scalable to Load by Choice of External MOSFET
These are Pb−Free Devices*
NCV Prefix for Automotive
−
Site and Change Control
−
AEC−Q100 Qualified
LQFP
2000 Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
©
Semiconductor Components Industries, LLC, 2008
December, 2008
−
Rev. 2
1
Publication Order Number:
NCV7512/D
NCV7512
PIN FUNCTION DESCRIPTION
PIN Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Symbol
N/C*
IN1
IN2
IN3
IN4
N/C*
ENA2
ENA1
FLTB
CSB
SCLK
SI
SO
VDD
STAB
VSS
N/C*
N/C*
GAT4
DRN4
GAT3
DRN3
GAT2
DRN2
GAT1
DRN1
N/C*
N/C*
VCC2
VCC1
FLTREF
GND
No Connection.
Channel 1 Input Parallel Control. Active High.
Channel 2 Input Parallel Control. Active High.
Channel 3 Input Parallel Control. Active High.
Channel 4 Input Parallel Control. Active High.
No Connection.
Enable 2 Input. Active High. Output Driver Control and Diagnostic Circuitry.
Enable 1 Input. Active High. Output Driver Control with System Reset.
Fault Bar Flag. Open−Drain Output. Goes Low with any Channel Open or Short Condition.**
Chip Select Bar (SPI Control).
Serial Clock (SPI Control).
Serial Input (SPI Control).
Serial Output (SPI Control).
Power Supply
−
Serial Output Driver.
Status Bar Flag. Open−Drain Output. Goes Low when any DRNx is Low (FET is On).**
Power Return (Ground) for VCC2, VDD, Drain Clamps. Isolated from GND by a Diode.
No Connection.
No Connection.
Gate Drive.
Drain Feedback.
Gate Drive.
Drain Feedback.
Gate Drive.
Drain Feedback.
Gate Drive.
Drain Feedback.
No Connection.
No Connection.
Power Supply for Gate Drivers.
Power Supply. Logic and Low Power Device.
Fault Detection Voltage Threshold.
Ground. Power Return for VCC1. Includes Device Substrate.
Description
*True no connect. PC board traces allowable.
** Unless masked out.
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