EVB-EC2650QI

EVALUATION BOARD user guide enpirion power solutions EC2650QI 6A Voltage Divider High Efficiency 12V to 6V (33W) Intermediate Bus Converter EVALUATION BOARD OVERVIEW 2 4 3 5 6 1 2 Figure 1: Evaluation Board (DIB) Features (Top View) NOTE A: The EC2650QI Evaluation Board is shown in Figure 1 with the important features numbered. NOTE B: The following instructions will directly correlate with the numbers shown in Figure 1. Page 1 Evaluation Board User Guide Intel Enpirion Power Solutions: EC2650QI device. One Master device can control all Slave devices EVALUATION BOARD INSTRUCTIONS are shown in Figure 2. There is no limit to how many 1) Input Supply (VIN) - Connect 8V to 13.2V supply on EC2650QI may be used in parallel, but since the devices VIN (J1, J3). Pay attention to input polarity and do not do not actively current balance, the current distribution turn on until everything is connected correctly. depends on board layout. Be sure the PVIN, GND and VOUT connections between all devices have as low 2) Ground (GND) - Connect the ground to GND (J3, J4). impedance as possible, especially when more than 4 devices are used in parallel operation. 3) Output Voltage (VOUT) - Connect the load to VOUT (J2). The output voltage connections may be used to 12V 6V drive the inputs of downstream converters. EC2650QI EN5311QI 1V at 1A (Master) 4) ENABLE (EN) The ENABLE is pulled high to VIN SYNC O through an external 10k resistor (R5). An external EN6338QI 1.2V at 3A signal may be applied to EN (TP6) to enable (>2.02V) or disable (<1.2V) the device. If the instructions were followed up to this point, the device may be powered on. EN6338QI 1.5V at 3A SYNC I 5) Input Power OK (VIN OK) - This is the open drain EC2650QI (Slave) Power OK flag for the input voltage (TP7), which is pulled EN6340QI 1.8V at 4A high to V3P3 externally by a 100k resistor (R4). When VIN is greater than 9V nominally, POK will be pulled high EN6340QI 3.3V at 4A SYNC I to V3P3. Add More VOUT EC2650QI 6) Master/Slave Operation (M/S) The EC2650QI may PVIN For Higher EN63A0QI 0.9V at 12A be configured to Master or Slave mode operation in Power order to parallel more devices and provide higher power. The board may be configured to be in Master or Slave EN6363QI 2.5V at 6A mode using the three-prong terminal (J6). To configure to Master mode, add a jumper to pull the M/S pin towards Master (Ground). To configure the device to EN6363QI 1.5V at 6A Slave mode, add a jumper to pull M/S pin toward Slave (V3P3). For Parallel Operation, connect the SYNC O Figure 2: Parallel Operation with Master/Slave Mode (TP8) of the Master to the SYNC I (TP9) of each Slave Page 2