TPS2412/13 Evaluation Module, HPA227 User's Guide January 2007 Power Supply MAN sluu267
TPS2412/13 Evaluation Module, HPA227 User's Guide Literature Number: sluu267 January 2007
User's Guide sluu267 – January 2007 TPS2412/13 Evaluation Module, HPA227 1 Purpose This user guide is to facilitate operation of the TPS2412/13 Evaluation Module, HPA227. It is used by an engineer or technician and supplements the TPS2412/13 datasheet, HPA227 schematics, and HPA227 circuit board labeling. 2 Introduction The TPS2412 controls an N-channel MOSFET to operate in circuit as an ideal diode. The MOSFET source and drain voltages are monitored by TPS2412 pins A and C.
www.ti.com Materials Needed Reference Figure 2, a block diagram of the HPA227. • The 5-V supply is jumper selected to power VDD on the TPS2412s and the glitch circuit if the control voltage is less than 3.0 V. • The Glitch maker, discussed in the Test Methods section applies a 1-Ω load to the input supply for 1 ms. This disruption allows the user to scope test points and observe system recovery. • The RSET resistor is used to program the turn off point of the TPS2411.
www.ti.com Jumper Description 4 Jumper Description 4.1 Jumpers J1, J2, J8, J9 VDD can be powered by the input power supply pin A, Jump J1-2, 3 and J9-2, 3. When it is powered by the load, pin C, jump J1-1, 2 and J9-1, 2. If A and C are less than 3 V, connect the 5 V to VDD, jumper J1-1 to J2 -2 and J8-1 to J9-2. 4.2 J13 Jumper J8 is the gate voltage for the Glitch FET. Jump J13-2, 3 when the PS1 voltage is greater than 5 volts. Jump J13-1, 2 to use the 5 volt supply when PS1 is less than 5 volts. 4.
www.ti.com Procedure 5.2 Power Supply Connection Connect the power supplies and load to the TPS2410 test card as shown in Table 2. Loading less than 30 A is safe for IRl3713S. The load can be a test load or the actual system load. Table 2. Power Supply Connection Connection Supply PS1 PS2 5.3 Terminal +V PS1, J3 GND PS1GND, J27 +V PS2, J10 GND PS2GND, J11 5V 5V J15-2 5GND GND J15-1 Load + Load J5 Load - GND J7 Test Points Table 3 lists some common test points for observation.
www.ti.com Procedure 5.6 Adjust Input Power Supplies Vary the input voltages to observe system behavior. Jumpers can be set as in Table 1. Turn the power supplies to the application typical 12 V. The load is shared between the supplies. Both gates will be on and the power supply current meters show output. Decrease one supply voltage slightly and note the gate on that channel pass FET turn off and the other channel FET gate increases to keep the FET on to supply the load.
www.ti.com Schematic/Board Layout Diagrams 6 Schematic/Board Layout Diagrams + + + + + + Figure 3.
www.ti.com Schematic/Board Layout Diagrams Figure 4.
www.ti.com List of Materials 7 List of Materials Table 5. List of Materials for the TPS2412/13 (1) (2) (3) (4) REF DES COUNT DESCRIPTION C1, C2, C7, C8, C9, C10 6 Capacitor, OSCON, SM, 100 µF, 20 V, 20%, G-case Sanyo 20SVP100M C15 1 Capacitor, ceramic, 0.
EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the input/output voltage range of 0.8 V to 18 V +/-5%. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field representative prior to connecting the input power. Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the EVM.
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