User s Manual AN 2041 ZL6100EVAL2Z REV.0.00 Dual Channel Evaluation Board Sep 11, 2009 Description Features The ZL6100 is an integrated mixed-signal power 30A Single-phase and 60A Dual-phase Rails conversion and management IC that combines an Optimized for Efficiency efficient step-down DC/DC converter with key power and thermal management functions in a single package. The Configurable Through SMBus ZL6100 incorporates current sharing and adaptive Onboard Enable Switch efficiency-optimization algorithms to provide a flexible, efficient power IC building block. Power Good Indicators The ZL6100EVAL2Z platform is a 6-layer board with two Target Specifications power rails. One rail is a single phase, 30A power rail. V = 12V The other rail is a dual phase, 60A power rail IN demonstrating the current sharing capability of the V = 1.8V/60A max OUT1 ZL6100. V = 1.5V/30A max OUT2 A USB to SMBus adapter board can be used to connect the eval board to a PC. The PMBus command set is f = 300kHz sw accessed by using the Zilker Labs PowerNavigator Efficiency: 90% at 50% load evaluation software from a PC running Microsoft Windows. Output Ripple: 1.5% Dynamic response: 3% (50%-70%-50% load step, di/dt = 2.5A/s) Board Temperature: +25C V IN P3 EN SYNC P1 ZL6100 V OUT2 SMBus DDC ENABLE SW1 EN SYNC ZL6100 P2 V OUT1 SMBus DDC EN SYNC ZL6100 SMBus DDC J10 J11 SYNC SYNC DDC DDC SMBus SMBus TRACK VTRK PG PG FIGURE 1. ZL6100EVAL2Z BLOCK DIAGRAM Page 1 of 34 AN2041 Rev.0.00 Sep 11, 2009ZL6100EVAL2Z been pre-configured as described in this document, but Functional Description the user may modify the operating parameters through The ZL6100EVAL2Z provides all circuitry required to the eval software or by loading a predefined scenario demonstrate the features of the ZL6100. The from a configuration file. ZL6100EVAL2Z has a functionally-optimized ZL6100 circuit layout that allows efficient operation up to the Use the mouse-over pop-ups for PowerNavigator help. maximum output current. Power and load connections Refer to Zilker Labs application note AN2033 PMBus are provided through plug-in sockets. Command Set DDC Products, Intersil Corporation, 2009 for PMBus details. All features of the ZL6100 such as current sharing, soft- start delay and ramp times, supply sequencing, voltage The ENABLE switch can then be moved to ENABLE and the ZL6100EVAL2Z board can be tested. Alternately, the tracking, and voltage margining are available on this evaluation board. For voltage tracking, the board is set PMBus ON-OFF CONFIG and OPERATION commands may up for the single phase rail (V ) to track the dual be used. OUT2 phase rail (V ). Contact the Zilker Labs sales office OUT1 for configuring the board for other tracking combinations. Quick Start Guide Figure 1 shows a functional block diagram of the Stand Alone Operation ZL6100EVAL2Z board. The SMBus address is selectable 1. Set ENABLE switch to DISABLE through a jumper on the top side of the board. All power 2 2. Apply load to VOUT+/VOUT- for each channel to the board (VIN and I C bus) must be removed before changing the jumpers. 3. Connect power supply to VIN+/VIN- (supply turned off) The hardware enable function is controlled by a toggle 4. Turn power supply on switch on the ZL6100EVAL2Z board. The power good (PG) LEDs indicate the correct state of PG when external 5. Set ENABLE switch to ENABLE power is applied to the ZL6100EVAL2Z board. (Note: If a 6. Monitor ZL6100EVAL2Z board operation using an USB board is connected to the ZL6100EVAL2Z and no oscilloscope power is applied to the board, the PG LEDs will turn on even though the power rails are not enabled.) The right USB (PMBus) Operation angle headers at opposite ends of the board are for 1. Set ENABLE switch to DISABLE connecting a USB to SMBus adapter board or for daisy 2. Apply load to VOUT+/VOUT- for each channel chaining of multiple evaluation boards. 3. Connect power supply to VIN+/VIN- (supply turned Figures 2 and 3 show the two phases of the 60A circuit. off) Figure 4 shows the single phase operational circuit. The 4. Turn power supply on circuit consists of the ZL6100 IC with its minimal 5. Insert the Zilker Labs Eval Kit CD component count to realize a 30A buck converter. The board layout has been optimized for thermal 6. Connect USB to SMBus adapter board to J10 of performance. ZL6100EVAL2Z 7. Connect supplied USB cable from computer to USB Figure 5 is the Interface and Figure 9 SMBus address to SMBus adapter board selection circuitry. a) Upon first-time connection, the Found New Operation Hardware Wizard will appear. b) Windows XP users: Select No at prompt to PMBus Operation search the Internet for drivers. The ZL6100 utilizes the PMBus protocol. The PMBus functionality can be controlled via USB from a PC running c) Follow the steps on the screen to install the the PowerNavigator evaluation software in a Windows XP drivers from the CD. or Windows 2000/NT operating system. 8. Install the PowerNavigator evaluation software by Install the ZL6100EVAL2Z software using the CD running setup.exe from the included in the ZL6100EVAL2Z kit. PowerNavigator installer folder on the CD. 9. Set ENABLE switch on EVB to ENABLE For board operation, connect the included USB-to-SMBus adapter board to J10 of the ZL6100EVAL2Z board. 10.Monitor and configure the ZL6100EVAL2Z board Connect the desired load and an appropriate power using PMBus commands in the evaluation software supply to the input and connect the included USB cable 11.Test the ZL6100EVAL2Z operation using an to the PC running the PowerNavigator evaluation oscilloscope and the evaluation software. software. Place the ENABLE switch in DISABLE and turn on the power. The evaluation software allows modification of all ZL6100 PMBus parameters. Each of the ZL6100 devices have AN2041 Rev.0.00 Page 2 of 34 Sep 11, 2009