PowerNut zzzzz Programmable PIC based Power Controller for: - Automatic wake-up (power on /off) of downstream devices - Low Voltage detection and reporting - Use as "smart" relay zzzzz Provides either regulated 5VDC or "raw" power for downstream devices zzzzz 5V high-efficiency switching regulator zzzzz Switched 5-30VDC up to 1A (or 7-30VDC when using onboard regulator) zz zzz Simple Clocked Serial Interface 84-0100 zzzzz Onboard screw-terminals for power connection PowerNut zzzzz Compact footprint dimensions (2" x 3" x .6") zzzzz Consumes approx. 180µA The new PowerNut simplifies the design of power sensitive applications by controlling the input power to a single board computer or other device. The PowerNut provides developers with voltage regulation, power on/off time scheduling and voltage monitoring features on a platform smaller than a credit card. This new accessory can control supply voltage from sources such as solar panels or batteries to downstream devices at up to 1A. The PowerNut can provide either regulated 5VDC using its onboard 7-30VDC regulator or it can furnish power directly from the source (5-30VDC) to downstream devices. By sending commands to the PowerNut, the main controller has the ability to monitor the input voltage and turn off power to itself (or another device) for a specified period of time. Additionally, the PowerNut can also be used as a “smart” solid-state relay to control power to subsystems that do not contain the primary system controller. Using an ultra-low quiescent current regulator and a low-power PIC processor, the PowerNut never sleeps and its clocked serial port can be used to wake up downstream devices. The PIC’s built-in analog to digital converter can also be used for low battery detection. A typical application would be a remote, power sensitive, system that is required to perform a periodic task. Sending commands to the PowerNut, the primary controller can power down for period of time, and then automatically wake up. This allows any single-board controller, regardless of its power management capabilities, to be used. For $39 in single quantity, the PowerNut enables JK microsystems’ line of cost-effective, embedded x86 single board computers to be utilized in many applications with tight power budgets. The PowerNut Development Kit (99-0100) includes a PowerNut controller, Connector Kit, LED, Setup Guide, Schematic and CD with utilities, sample programs and documentation. JK microsystems, Inc. 1403 5th St. Suite D, Davis, CA 95616 Phone (530)297-6073 http://www.jkmicro.com Fax (530)297-6074 PowerNut Specifications Processor Low-power PIC, 32768 Hz Supply Voltage 5-30 VDC if not using the on-board 5 volt switching regulator 7-30 VDC otherwise Current Consumption Downstream shutoff: 180µA max (58 to 100µA typical) with no load attached Downstream active, on-board 5V disabled, Vin=5V, 3.3mA Downstream active, on-board 5V disabled, Vin=30V, 7.5mA Downstream active, on-board 5V active, Vin=7V, 11mA Downstream active, on-board 5V active, Vin=30V, 15mA Operating Temperature -20 to +85°C Humidity 5 - 90% non-condensing Physical dimensions 2” x 3” x 0.6” (50.80mm x 76.20mm x 1.58mm) Connectors and Jumpers JP1 Enable/disable for reverse polarity protection JP2 Reserved for future expansion JP3 Downstream Configuration Jumpers J1 Power Input Connector J2 Power Output Connector location JK microsystems, Inc. 1403 5th St. Suite D, Davis, CA 95616 Phone (530)297-6073 http://www.jkmicro.com Fax (530)297-6074