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PDF TLE8242-2 Data sheet ( Hoja de datos )
| Número de pieza | TLE8242-2 | |
| Descripción | 8 Channel Fixed Frequency Constant Current Control | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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Data Sheet, Rev. 1.0, Feb 2010
TLE8242-2
8 C h a n n e lwww.DataSheet4U.net F i x e d F r e q u e n c y C o n s t a n t C u r r e n t
Control With Current Profile Detection
Automotive Power
1 page  
TLE8242-2
Overview
• Diagnostics
– Over current
– Open load in on state
– Open load in off state
– Short to ground
– Test complete bit - indicates that fault detection test has completed
• Control loop monitor capabilities
– The average current measurement over the last completed dither cycle for a selected channel can be
accessed via SPI
– The minimum and maximum current measurements over the last completed dither cycle for a selected
channel can be accessed via SPI. This data can be used to measure the achieved dither amplitude
– The duty cycle of each channel can be accessed via SPI
– The auto zero values used to cancel the offsets of the input amplifiers can be accessed via SPI
• Required External Components:
– N-Channel Logic level (5V) MOSFET transistor with typical Ron ≤ 100 mΩ (e.g. SPD15N06S2L-64)
– Recirculation diode (ultrafast)
– Sense resistor (0.2Ω for 1.2A average output current range)
• Green Product (RoHS compliant)
• AEC Qualified
1.2 Applications
• Variable Force Solenoids (e.g. automatic transmission solenoids)
• Other constant current solenoids
– Idle Air Control
– Exhaust Gas Recirculation
– Vapor Management Valve
– Suspension Control
1.3 General Description
The TLE8242G IC is an eight channel low-side constant current control predriver IC. Each channel can be
configured to function either in direct PWM mode or in constant current mode by setting the appropriate CM bit in
SPI message #1.
1.3.1
Direct PWM Mode Operation
For Direct PWM operation, the POSx and NEGx pins must be connected to the circuit in either of the configurations
shown in Figure 1. If the sense resistor is included, the load current can be monitored by the microcontroller via
a SPI command. The open load in on state fault detection feature is disabled in direct PWM mode.
Note: An external flyback clamp is required in this configuration otherwise the IC may be damaged.
Data Sheet
5 Rev. 1.0, 2010-02-09
5 Page 
3 Pin Configuration
3.1 Pin Assignment
TLE8242-2
Pin Configuration
64
1
NEG0
POS0
NC
V5A1
SCO2
SCO3
GNDA1
GNDSA
GNDA2
AMUX
TEST
V5A2
NC
BAT
POS4
NEG4
16
17
TLE8242L
ADLER2
49
48
NC
CS_B
SCK
SI
SO
V_SIGNAL
FAULT
GNDSD
GND_D
CLK
RESET_B
PHASE_SYNC
V5D
NC
ENABLE
NC
33
32
Figure 6 Pin Configuration
3.2 Pin Definitions and Functions
Pin Symbol
1 NEG0
2 POS0
3 NC
4 V5A1
5 (T) SCO2
6 (T) SCO3
7 GND_A1
8 GNDSA
Data Sheet
Function
Channel #0 Negative sense pin; Connect to the “FET” side of the external
sense resistor
Channel #0 Positive sense pin; Connect to the “load” side of the external
sense resistor
Not Connected; do not connect to external supply, ground, or signal
Supply Voltage; 5V input for analog circuits. An external capacitor is to be
connected between this pin and GND_A near this pin
Test Pin; Used for IC test. Must be connected to GND_D for specified
operation of the IC
Test Pin; Used for IC test. Must be connected to GND_D for specified
operation of the IC
Ground; ground pin for analog circuits
Ground; ground pin for substrate connection near analog circuits
11 Rev. 1.0, 2010-02-09
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TLE8242-2.PDF ] | |
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