LM10504EVAL User Guide Triple Buck + LDO Power Management Unit Evaluation Kit www.ti.
LM10504EVAL User Guide Scope of Document This document will describe the functionality of the LM10504EVAL, the hardware and software setup, and the use of both the board and software. General Description The LM10504 is an advanced Power Management Unit (PMU) containing three configurable, high efficiency buck regulators for supplying variable voltages. The device is ideal for supporting ASIC and SOC designs for SSD and flash drives.
LM10504EVAL User Guide Evaluation Software LM10504 evaluation software is supplied together with documentation regarding the circuit. Copy the folder “lm10504” to your PC’s hard disk. The software is run by double clicking the icon of lm10504.exe found in the folder. The software does not require any installation. The evaluation software allows control of all registers necessary to program the device. To simplify the use of software, the registers are set by directly named controls.
LM10504EVAL User Guide Software Figure 2: LM10504 Evaluation Software Main Screen Using the Evaluation Software The LM10504EVAL should become active as soon as the USB cable is plugged in. When the device starts up correctly, the green LED LD1 (DC IN) is illuminated. All of the device functions can be accessed via the control buttons. Main screen As shown in Figures 2 and 3, the top and bottom portions of the screen are visible in both tab screens. Common functions can be controlled here.
LM10504EVAL User Guide LM10504 reads the state of Vselect_B2 and Vselect_B3 pins only during startup. When LM10504 is using the USB bus as a power supply, pins Vselect_B2 and Vselect_B3 have no effect on LM10504. User can set pins in software and then power up LM10504 using an external power supply. Another way to set pins Vselect_B2 and Vselect_B3 is by using user connector J1 before powering up the board. To save power, the device can be placed into sleep mode (DEVSLP) by asserting the DEVSLP pin high.
LM10504EVAL User Guide Software System Settings Tab Selecting this tab, as shown in Figure 2, allows access to the controls of Buck1, Buck2 and Buck3 regulators, comparator, LDO sleep mode, and IRQ (Interrupt) pin polarity. It also shows a log of occurred events. In the System status/interrupts/events frame, the user can choose which interrupts are enabled with the checkboxes on the left.
LM10504EVAL User Guide Hardware Using the Evaluation Hardware Connectors are provided to allow a battery connection and output voltage measurement. Jumpers allow user selectable or USB controlled settings for device functions. Power supply The evaluation board may power from a battery connector or from the USB interface. Control A green LED (DC IN) will be illuminated once the LM10504 has started up. Set the jumper between J2 pin1 and TP27 to use supply from USB. Maximum current for USB supply is 500 mA.
LM10504EVAL User Guide Hardware Control (continued) CONNECTOR J3 CONNECTOR J7 Pin Function Pin Function 1 VIN_B1 1 VIN_B3 2 VIN_B1 2 VIN_B3 3 GND 3 GND CONNECTOR J4 CONNECTOR J8 Pin Function Pin Function 1 BUCK1 1 BUCK3 2 BUCK1 2 BUCK3 3 GND 3 GND CONNECTOR J5 CONNECTOR J11 Pin Function Pin Function 1 VIN_B2 1 VIN 2 VIN_B2 2 VIN 3 GND 3 GND CONNECTOR J6 CONNECTOR J12 Pin Function Pin Function 1 BUCK2 1 LDO 2 BUCK2 2 LDO 3 GND 3 GND LM10
LM10504EVAL User Guide Hardware PCB Schematic LM10504EVAL Board Schematics LM10504EVAL User Guide 9 Texas Instruments 4Q 2011
LM10504EVAL User Guide Hardware Board Layout Top Layer Mid Layer 1 LM10504EVAL User Guide 10 Texas Instruments 4Q 2011
LM10504EVAL User Guide Mid Layer 2 Bottom Layer LM10504EVAL User Guide 11 Texas Instruments 4Q 2011
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