Enpirion Power Management Evaluation Board User Guide ES1030 Four-Channel Sequencer with Digital Feedback and jumpers for flexible connections to the four output Description ENABLE signals (OE1, OE2, OE3, OE4) and the four This document describes the connections to and the digital feedback signals (PG1, PG2, PG3, and PG4). testing of the ES1030 four-channel power regulator The EVB also provides the chaining signals nFLT IN, sequencer evaluation board (EVB). The ES1030QI nFLT O, OE O, NEXT IN, and NEXT O. You can can be chained to provide nested sequencing for over connect multiple EVBs with these chaining signals to 16 power regulators. The part comes in a tiny 2x3 provide nested sequencing for additional channels. mm Quad Flat No-lead (STQFN) package and uses the power good (PG) signals from the regulators to Signals to the sequencer are available on the single- confirm the desired sequence is being produced. A row headers on the left and right edges of the EVB. complete sequencing solution requires only a few The three-pin headers allow jumpered pull-ups or small signal components. A precise sequencing delay pass-through of the signals to the single-row headers. is set by a resistor divider from the internally provided The resistor positions provide series and shunt reference. locations for implementing pass-through, divider, or pull-down connections to the signals. The default population of the EVB is for a single four-channel Introduction sequencer. Chained operation of multiple EVBs The ES1030 sequencer EVB contains one four- requires some jumper and component changes. channel sequencer chip and component locations Evaluation Board Overview Figure 1: ES1030QI Evaluation Board 1 www.altera.com/enpirion ES1030 Evaluation Board User Guide Evaluation Board Operating Instructions In the following instructions, the numbers in brackets correspond to the numbers in Figure 1. CAUTION: This kit contains circuitry that is sensitive to static electricity. Please use anti-static precautions before touching or handling the EVB. 1) Connect the EVB: Locate the ES1030 EVB in the kit and connect it to the equipment used for testing. The supply voltage (1.62-5.5V) is connected to SV8 Pin 1 1 and ground at SV9 Pin 10 4 . For repeated triggering of the sequence, connect a square-wave signal generator to SV9 Pin1 (EN) and GND. The signal amplitude should match the nominal supply voltage (check the terminator requirements), and the frequency should be no more than 10 Hz. Connect the output enable signals (OEx) and power good signals (PGx) to the power regulators to be sequenced, and connect OEx and PGx to an oscilloscope or logic analyzer for observation. For demonstration without external regulators, connect PG1=OE1, PG2=OE2, and so on. 2) Apply Power: Apply power to the VDD supply. The OE and PG signals should show a nested sequencing pattern (1- 2-3-4 rising and 4-3-2-1 falling). 3) Test the Module: To adjust the time delay between successive enables and the qualification window for the PG signals from 0.033ms to 8.04ms, you can change the divider ratio formed by R7 and R40 (keep R7+R40>100kohms). If PG does not rise within the qualification window after the corresponding OE signal, a fault is produced (shown by LOW on nFAULT O) and the sequence reverses. For more information, refer to the Enpirion Power Datasheet: ES1030 Power Rail Sequencer. 2 www.altera.com/enpirion