STEVAL-ILL067V1 Datasheet, PDF (5/10 Pages) STMicroelectronics – All automotive-grade components

STEVAL-ILL067V1
Connector Name
J14
ROW5
J15
ROW6
Function
Board description and efficiency measurement
Test point
AVCC
COMP
Function
Table 2: STEVAL-ILL067V1 test points
+5 V LDO output monitor (device supply rail).
COMP pin monitor (output of the trans-conductance amplifier of the control loop).
Jumper /
switch
SW1
SW2
SW3
SW4
Table 3: STEVAL-ILL067V1 jumpers and switches
Function
FSW pin assignment. When the jumper is set in the upper position (FSW to R5), the
switching frequency of the boost converter is set by R5 (1 MHz). In the lower position
(FSW to VCC), the FSW pin is tied high and the 630 kHz fixed switching frequency is
set. In case an external synchronization clock has to be applied at the FSW pin, this
jumper must be in the upper position.
MODE pin setting. This jumper allows to set high (VCC) or low (GND) the MODE pin
in order to select the desired LED fault management. I case some channels are not
used, the MODE pin must be set high.
EN low pushbutton. When pressed the EN pin (internally pulled-up) is tied to ground.
Used to restart the device in case a latched turn-off due to a faulty condition.
DIM pin setting. If the jumper is set in the right position (VCC), the DIM pin is held
high and the LEDs are driven at full-brightness as soon as the EN pin goes high. If the
jumper is set in the left position (D3), the EN pin is pulled-down by R12 and activated
by the PWM signal applied at the DIM pin through D3. This way a single-wire control
is achieved (automatic device turn-on as soon as PWM dimming is applied). Note:D3
(BAT54K) & R12 (220k) are natively not mounted.
DocID027964 Rev 1
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