Texas Instruments TPS650830EVM-095, Руководство пользователя

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Connectors, Switches and Test Point Descriptions
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4 Connectors, Switches and Test Point Descriptions
4.1 Power Connections
4.1.1 J1 – VIN
This header is the positive connection to the input power supply. The power supply must be connected
between J1 and J2 (GND). The leads to the input supply must be kept as short as possible. The input
voltage has to be between 5.4 V and 21 V.
4.1.2 J2 – GND
This header is the return connection to the input power supply for GND.
4.1.3 Output Voltage Rails
See Table 2 for header names, power source descriptions, and sequence.
Table 2. Output Rail Headers
Source
Header Name Turns On With
TPS650830EVM TPS650831EVM TPS650832EVM
J6 V3.3_DSW VR3 POL, Discrete VR3 Valid VIN
J7 V1.8A VR2 VR5 VR2 Valid VIN
J10 V5A_DS3 VR5 POL, Discrete VR5 SLP_SUS# Asserts Hign
POL, Load
J11 V3.3A_PCH POL, Load Switch POL, Load Switch SLP_SUS# Asserts Hign
Switch
J14 V0.85A VR1 VR2 POL, Discrete SLP_SUS# Asserts Hign
J15 V1.00A VR1 VR1 VR1 SLP_SUS# Asserts Hign
J16 VDDQ VR4 VR4 VR4 SLP_S4# Asserts Hign
POL, Load
J19 V1.8U_2.5U POL, Load Switch POL, Load Switch SLP_S4# Asserts Hign
Switch
POL, Load
J20 VCCIO VR3 POL, Discrete SLP_S3# Asserts Hign
Switch
J23 VTT VLDO1 VLDO1 VLDO1 SLP_S0# Asserts Hign
4.2 Switches
4.2.1 S1 – PB_IN
This is the pushbutton input. Pressing S1 pulls PWRBTNIN to GND. The power button can be used for
many features such as turn on after a RESET or causing a RESET if configured correct via I2C. See the
datasheet for more options and uses of the power button.
4.2.2 S2 – Multi-Switch Shutdown, NVDC, and 3.3-V Load Switch
This switch has 4 dip switches in it. Switch 1 is unused. Switch 2 is internal 3.3-V load switch enable. Set
away from the ON position to enable the internal 3.3-V load switch. Switch 3 is NVDC selector. Set
towards the ON position to put the device into NVDC mode. Switch 4 is Shutdown mode. Set towards the
ON position to put the device into SHUTDOWN mode.
4.3 Enables
There are places for jumpers to enable the VRs directly on the board. However, the TPS650830EVM has
other jumpers that set the Sleep States for the device. The sleep states indirectly enable the VRs.
VR2 and VR3 are already on before any enable switch asserting high. They are enabled by DPWROK and
LDO3, respectively, with LDO3 enabled when VIN > UVLO.
10 TPS650830EVM-095 SLVUAD6 – December 2014
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