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Texas Instruments TPS6100 EVM Series, User Manual

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Texas Instruments TPS6100 EVM Series User Manual Download Page 1

   

May 2000

Power Management Products

User’s Guide

SLVU029

Summary of Contents for TPS6100 EVM Series

Page 1: ... May 2000 Power Management Products User s Guide SLVU029 ...

Page 2: ... this warranty Specific testing of all parameters of each device is not necessarily performed except those mandated by government requirements Customers are responsible for their applications using TI components In order to minimize risks associated with the customer s applications adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards ...

Page 3: ...the components used with their manufacturers The layout and the component placement of the top and bottom side of the board is shown The board is assembled on both sides The following layout considerations point out the most important layout issues which must be followed to avoid oscilla tions and instability The Setup of the EVM section describes how to start working with the board The next secti...

Page 4: ...n From Texas Instruments 1 TPS6100x Single Cell Boost Converter With Start Up Into Full Load data sheet literature number SLVS279 2 Understanding Boost Power Stages in Switchmode Power Sup plies literature number SLVA061 3 Linear Design Seminar literature number SLYD016 ...

Page 5: ...out and Component Placement 3 2 3 2 Bottom Side Layout and Component Placement 3 2 3 3 Layout Considerations 3 3 4 Setup of the EVM 4 1 4 1 Setup of the EVM 4 2 4 2 Low Battery Function LBI and LBO 4 3 2 1 Schematic of the EVM 2 2 3 1 Topology of a Boost Converter Stage 3 3 4 1 Setup of the EVM 4 2 4 2 Resistive Divider at LBI 4 3 ...

Page 6: ...vi ...

Page 7: ... and a special power save mode makes this family of devices well suited for battery powered applications These EVMs should help to eval uate the device directly in the application The board can be used for example to measure the efficiency of different ex ternal components and determine the best for the application The ripple of the output voltage be can easily measured depending on the output cap...

Page 8: ...1 2 ...

Page 9: ...2 1 Schematic and Bill of Material Figure 2 1 Schematic of the EVM EN COMP FB GND VO LBO LBI NC SWITCH VBAT R6 LP1 R5 C5 C6 R3 R4 OUT C2 J1 J2 L1 C1 C3 R2 R1 IN D1 Chapter 2 ...

Page 10: ...ble version R4 1 MΩ 1 only TPS61000 ADA Resistor to adjust the output voltage at the adjustable version R5 33 kΩ 5 Resistor to compensate the control loop R6 470 kΩ 5 Pullup resistor for the open drain output of the low battery output C1 10 µF Taiyo Yuden JMK316BJ106ML T Input capacitor to stabilize input voltage C2 22 µF Taiyo Yuden LMK432BJ226MM T Output capacitor to supply the load during on st...

Page 11: ...3 1 Layout Topic Page 3 1 Top Side Layout and Component Placement 3 2 3 2 Bottom Side Layout and Component Placement 3 2 3 3 Layout Considerations 3 3 Chapter 3 ...

Page 12: ...Top Side Layout and Component Placement 3 2 3 1 Top Side Layout and Component Placement 3 2 Bottom Side Layout and Component Placement ...

Page 13: ...vider for the low battery function and for fixing the output voltage on the adjustable version It is very important to keep noisy and high current traces away from sensitive lines or to separate them by using additional ground traces between them otherwise instability or oscillation can occur The resis tive divider for fixing the output voltage should be placed as close as possible to the FB pin S...

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Page 15: ...4 1 Setup of the EVM Topic Page 4 1 Setup of the EVM 4 2 4 2 Low Battery Function LBI and LBO 4 3 Chapter 4 ...

Page 16: ...upply are used Follow these steps for proper operation of the EVM 1 Connect J1 the Enable pin with VDD as shown in Figure 4 1 2 Connect the sense wires of the power supply to the input terminals of the board or solder the connections of the power supply to the terminals 3 Connect the input voltage meter between the board on the one side and the power supply and input current meter on the other sid...

Page 17: ...y voltage goes below 0 96 V the LBO open drain output is pulled down to ground Otherwise it is in a high impedance state and the voltage is pulled up via the external resistor R6 to VO R1 is a 1 MΩ resistor so that the current through R1 is about 50 times higher than the typical current into the LBI pin of 10 nA Therefore the LBI input current can be neglected in the calculations Figure 4 2 Resist...

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