Evaluation board user guide enpirion power solutions EZ6301QI Triple Output Module 1.5A DC-DC Buck Module with 2 x 300mA LDOs EVALUATION BOARD OVERVIEW 3 2 2 1 1 2 2 3 6 5 5 1 2 7 2 8 3 5 4 Figure 1: Evaluation Board (EVB) Features (Top View) NOTE A: The EZ6301QI 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: EZ6301QI LDO EVALUATION BOARD INSTRUCTIONS V OUTL1, 2 1) Input Voltage (PVIN, L1IN, L2IN) - Connect 2.7V to VOUTL1, 2 6.6V supply on the DC-DC Regulator input supply (PVIN). C Connect 1.8V to 5.5V on the LDO input supplies OUT (10F 47F) (LDO1 IN and LDO2 IN). The LDO input supplies may be R C A A PGND 110k (10pF 47pF) jumpered together with J5. Pay attention to input polarity and do not turn on until everything is connected V = 0.9V FBL1,2 correctly. VFBL1, 2 2) Ground (GND) - Connect the input and output ground 0.9V x 110k R = B to GND for each rail, respectively. V - 0.9V OUT 3) Output Voltage (OUT SW, L1OUT, L2OUT) - Connect AGND the load to the buck output (OUT SW), the LDO1 output (L1OUT) and the LDO2 output (L2OUT). If the Figure 3: LDO VOUT Resistor Divider & Compensation instructions were followed up to this point, the device Capacitor may be powered on. Table 1: External Compensation Recommendations 4) Enable (SWENk, L1EN, L2EN) The ENABLE is internally pulled low to ground. The jumpers J1, J2 and Rail VOUT RB CA RA RC COUT J3 may be used to enable or disable each rail, respectively. An external signal may be applied to the J1, 0.6V OPEN 33pF J2 or J3 pins to enable or disable each corresponding rail. 0.9V 590k 33pF 5) Output Voltage Settings - The output voltage of each 1.0V 374k 33pF rail may be adjusted quickly by placing a jumper on the 47F 1.2V 249k 33pF jumper sets J6, J7 and J9. The voltages available for the DC-DC 169k 6.65k or buck regulator are 0.6V, 1V, 1.8V, 2.5 and 3.3V. The 1.5V 165k 27pF 2 x 22F voltages available for the LDOs are 0.9V, 1V, 1.8V, 2.5V and 3.3V. The compensation CA may be adjusted 1.8V 124k 27pF according to Table 1 for best results. The output voltage 2.5V 78.7k 27pF may also be adjusted to any voltage as indicated by the equation for R shown in Figure 2 and Figure 3. B 3.3V 37.4k 27pF DC-DC Buck 1.0V 1M 33pF V OUT 1.2V 332k 33pF VOUT 47F R A C 1.5V 165k 27pF OUT C A 169k (47F 150F) (10pF 33pF) LDO 110k 0 or PGND 1.8V 110k 27pF R C 2 x 22F 6.65k 2.5V 61.9k 27pF V = 0.6V FB VFB 3.3V 41.2k 27pF 0.6V x 169k R B = V - OUT 0.6V AGND 6) Power OK (SWOK, L1OK, L2OK) The power OK is an open drain flag. When output voltage is within 10% of regulation, the power OK flag will be pulled high to PVIN Figure 2: DC-DC VOUT Resistor Divider & through a 100k resistance for each rail. Be sure there is Compensation Capacitor a jumper on JP1 to connect the POKs to PVIN. Page 2