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STEVAL-ILL067V1 데이터시트(PDF) 5 Page - STMicroelectronics |
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STEVAL-ILL067V1 데이터시트(HTML) 5 Page - STMicroelectronics |
5 / 10 page STEVAL-ILL067V1 Board description and efficiency measurement DocID027964 Rev 1 5/10 Connector Name Function J14 ROW5 J15 ROW6 Table 2: STEVAL-ILL067V1 test points Test point Function AVCC +5 V LDO output monitor (device supply rail). COMP COMP pin monitor (output of the trans-conductance amplifier of the control loop). Table 3: STEVAL-ILL067V1 jumpers and switches Jumper / switch Function SW1 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. SW2 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. SW3 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. SW4 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. |
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유사한 설명 - STEVAL-ILL067V1 |
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