tle8242 Infineon Technologies Corporation, tle8242 Datasheet - Page 13

• Manufacturer Part Number: tle8242
• Description: 8 Channel Fixed Frequency Constant Current Control With Current Profile Detection
• Manufacturer: Infineon Technologies Corporation

Pin
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
Data Sheet
Symbol
ENABLE
NC
V5D
PHASE_SYNC
RESET_B
CLK
GND_D
GNDSD
FAULT
V_SIGNAL
SO
SI
SCK
CS_B
NC
POS3
NEG3
NEG2
POS2
NC
OUT3
OUT2
V5A3
NC
GND_A3
OUT1
Function
ENABLE logic input; When this input pin is low all channels are turned off
(zero current) or remain in their last state, depending on how the channel is
programmed to respond
Not Connected; do not connect to external supply, ground, or signal
Supply Voltage; 5V input for digital circuits. An external capacitor is to be
connected between this pin and GND_D near this pin
Phase Synchronization Input: Used to synchronize the rising edges of the
PWM signal on the OUTx pins for each channel
Reset Input; When this input pin is low all channels are turned off and all
internal registers are reset to the default state. The part must be held in reset
by an external source until all supplies are stable and within tolerance
CLOCK; Main clock input for the chip. A clock input of 20 MHz to 40 MHz is
required
Ground; ground pin for digital circuits
Ground; ground pin for substrate connection near digital circuits
Fault Output Pin; Open drain output pin is pulled low when a fault condition
is detected. Certain faults can be masked via SPI
Supply Voltage; Supply pin for the SPI SO output and the pull-up current
sources of the digital inputs CS_B and RESET_B. An external capacitor must
be connected between this pin and GND_D near this pin
SPI Serial Data Out
SPI Serial Data In
SPI Serial Clock Input
SPI Chip Select Bar; active low signal
Not Connected; do not connect to external supply, ground, or signal
Channel #3 Positive sense pin; Connect to the “load” side of the external
sense resistor
Channel #3 Negative sense pin; Connect to the “FET” side of the external
sense resistor
Channel #2 Negative sense pin; Connect to the “FET” side of the external
sense resistor
Channel #2 Positive sense pin; Connect to the “load” side of the external
sense resistor
Not Connected; do not connect to external supply, ground, or signal
Gate driver output for channel #3; Connect to the gate of the external
MOSFET
Gate driver output for channel #2; Connect to the gate of the external
MOSFET
Supply Voltage;5V input for analog. An external capacitor is to be connected
between this pin and GND_A near this pin.
Not Connected; do not connect to external supply, ground, or signal
Ground; ground pin for analog circuits
Gate driver output for channel #1; Connect to the gate of the external
MOSFET
13
Rev. 1.0, 2009-02-25
Pin Configuration
TLE8242