PI2001-EVAL1 Cool-ORing Series PI2001-EVAL1 Active ORing Evaluation Board User Guide Cool-ORing Series Contents Introduction Page 1 PI2001 Product Description Page 2 Evaluation Board Terminal Description Page 2 Evaluation Board Schematic . Page 3 Bill of Materials . Page 3 Evaluation Board Configuration Page 4 Test Procedure Page 4 PCB Layouts . Page 10 PI2001-EVAL1 Evaluation Board Evaluation Board Mechanical Drawing . Page 11 featuring the Cool-ORing PI2001 Universal Active ORing controller. The PI2001-EVAL1 Evaluation Board is intended to acquaint the During operation, the power devices and surrounding TM user with the benefits and features of the Cool-ORing PI2001 structures can be operated safely at high temperatures. Universal Active ORing controller. It is not designed to be Remove power and use caution when connecting and installed in end-use equipment. disconnecting test probes and interface lines to avoid Please read this document before setting up the PI2001-EVAL1 inadvertent short circuits and contact with hot surfaces. Evaluation Board and refer to the PI2001 product data sheet When testing electronic products always use approved for device specifications, functional description and safety glasses. Follow good laboratory practice and characteristics. procedures. Introduction The PI2001-EVAL1 allows the user to test the basic principle The PI2001-EVAL1 evaluation board is designed with and operational characteristics of an Active ORing function in optimized PCB layout and component placement to represent a redundant power architecture, while also experiencing the a realistic high density final design for an embedded Active benefits and value of the PI2001 solution versus conventional ORing solution for 7 Vbus applications requiring up to 20 A. Active ORing solutions. The PI2001-EVAL1 evaluation board is This evaluation board is intended as an easy and simple way configured to receive two independent power source inputs, to test the electrical and thermal performance of the PI2001 per a typical redundant power architecture, through two Active ORing controller. Active ORing channels that are combined to form a Both dynamic and steady state testing of the PI2001 can be redundant power output. Each channel contains a PI2001 completed on the PI2001-EVAL1 evaluation board, in addition controller and an N-channel power MOSFET. The MOSFET to using the key features of the product. Dynamic testing can foot print can take an SO-8 or Power SO-8 MOSFET package. be completed under a variety of system level fault conditions Each channel is capable of up to 20 A, for high current Active to check for response time to faults. ORing, above 20 A, the two channels provided on the evaluation board can be paralleled in a master / slave This document provides basic instructions for initial start-up configuration and ORd with a second evaluation board. and configuration of the evaluation board. Further information on the functionality of the PI2001 can be found in the PI2001 product data sheet. Picor Corporation www.picorpower.com P12001-EVAL1 User Guide Rev 1.1 Page 1 of 11TM Cool-ORing PI2001 Product Description The Cool-ORing PI2001 with an external industry standard N-channel MOSFET provides a complete Active ORing solution designed for use in redundant power system architectures. The PI2001 controller with N-channel MOSFET enables extremely low power loss with fast dynamic response to fault conditions, critical for high availability systems. A master / slave feature allows the paralleling of PI2001 solutions for high current Active ORing requirements. The PI2001 can also drive multiple paralleled MOSFETs. The PI2001 controller with a low Rds(on) N-channel MOSFET provides very high efficiency and low power loss during steady state operation. The PI2001 controller provides an active low fault flag output to the system during excessive forward current, light load, reverse current, over-voltage, under-voltage, and over-temperature fault conditions. A temperature sensing function indicates a fault if the Terminals Rating maximum junction temperature exceeds 160C. The under- Vin1, Vin2 8V / 24 A voltage and over-voltage thresholds are programmable via Vaux1, Vaux2, (R2 = R4 = 10 ) -0.3 V to 17.3 V / 40 mA an external resistor divider. SL1, SL2 -0.3 V to 8.0 V / 10 mA FT1, FT2 -0.3 V to 17.3 V / 10 mA Figure 1 shows a photo of the PI2001-EVAL1 evaluation board, with two PI2001 controllers and two N-channel MOSFETs used to form the two Active ORing channels. The Figure 1 PI2001-EVAL1 Evaluation Board (1.8 x 1.8 ) board is built with two identical Active ORing circuits with options and features that enable the user to fully explore the capabilities of the PI2001 universal Active ORing controller. Terminal Description Vin1 Power Source Input 1 or bus input designed to accommodate up to 20 A continuous current. Vaux1 Auxiliary Input Voltage 1 to supply PI2001 VC power. Vaux1 should be equal to Vin1 plus 5 V or higher. See details in Auxiliary Power Supply (Vaux) section of the PI2001 data sheet. Rtn1 Vaux1 Return Connection: Connected to Ground plane Gnd Vin & Vout Return Connection: Three Gnd connections are available and are connected to a common point, the Ground plane. Input supplies Vin1 & Vin2 and the output load at Vout should all be connected to their respective local Gnd connection. SL1 PI2001 (U1) Slave Input-Output Pin: For monitoring U1 slave pin. When U1 is configured as the Master, this pin functions as an output that drives slaved PI2001 devices. When U1 is configured in Slave mode, SL1 serves as an input. SL2 PI2001 (U2) Slave Input-Output Pin: For monitoring U2 slave pin. When U2 is configured as the Master, this pin functions as an output that drives slaved PI2001 devices. When U2 is configured in Slave mode, SL2 serves as an input. Vin2 Power Source Input 2 or bus input designed to accommodate up to 20 A continuous current. Vaux2 Auxiliary Input Voltage 2 to supply PI2001 VC power. Vaux2 should be equal to Vin2 plus 5 V or higher. See details in Auxiliary Power Supply (Vaux) section of the PI2001 data sheet. Rtn2 Vaux2 Return Connection: Connected to Ground plane FT1 PI2001 (U1) Fault Pin: Monitors U1 fault conditions FT2 PI2001 (U2) Fault Pin: Monitors U2 fault conditions Vout Output: Q1 and Q2 MOSFET Drain pins connection, connect to the load high side. Table 1 PI2001-EVAL1 Evaluation Board terminals description Jumper Description J1, J3 BK Jumpers: Connect jumper across M for master mode and across S for slave mode. Remove jumper to adjust reverse fault blanking time using Rbk. Rbk is R7 for U1 and R14 for U2 shown in the schematic, Figure 2. J2 Slave Jumper: Remove the jumper unless one of the PI2001 is configured in slave mode. Table 2 PI2001-EVAL1 Evaluation Board jumpers description Picor Corporation www.picorpower.com P12001-EVAL1 User Guide Rev 1.1 Page 2 of 11