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4
Jumper Settings
There are several jumpers and 0-Ω resistors located on the board, which are used to configure the
connections to the PGA450-Q1 device and the rest of the EVM. The default settings and their effects are
listed below.
4.1
Jumpers
Table 1
shows the function of each specific jumper setting on the EVM.
Reference
Jumper Setting
Closed
VPWR:VOTP
Closed
VPWR:VLIN
Closed
JP3
Closed
JP4
Closed
JP5
(1)
The transformer provided with the EVM is push-pull. When using the single-ended configuration, JP4 must be disconnected and
JP5 must be closed
4.2
Default Jumper Settings
Reference
Jumper Position
VPWR:VOTP
VPWR:VLIN
Closed
JP3
Closed
JP4
Closed
JP5
(1)
Ensure the TI-GER USB Interface board has no jumpers populated except for the 5-V digital I/O-level option located adjacent to
the red 5-V test-point. The HEX jumper should not be installed, nor should any of the pins on pin block P3 be shorted; these are
reserved for TI only.
4.3
0-Ω Resistors
The 0-Ω resistor R2 is used to connect the programming voltage to the PGA450-Q1 device that is
soldered to the PCB. This resistor is not populated on the PCB. The soldered device has had the OTP
programmed for DEVRAM usage.
Reference
R2
Although they are installed to default settings in the factory, it is recommended that the user verify that the
jumpers and 0-Ω resistors are installed to their default settings before powering on the EVM.
SLDU007C – March 2012 – Revised November 2015
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VP_OTP power supply input on the PGA450-Q1 device is connected to the 8-V voltage supply on the EVM.
VP_OTP power supply input on the PGA450-Q1 device is not connected to the 8-V voltage supply on the
Open
EVM.
VPWR is connected to V_LIN, which is the LIN bus voltage.
Open
VPWR is not connected to V_LIN, which is the LIN bus voltage.
The secondary of the transformer on the EVM is connected to the PGA450-Q1 device on the EVM.
Open
The secondary of the transformer on the EVM is not connected to the PGA450-Q1 device on the EVM.
The transformer primary top terminal is connected to the OUTA pin on the PGA450-Q1 device, for push-pull
(1)
configuration.
Open
The transformer primary top terminal is not connected to the OUTA pin on the PGA450-Q1 device.
The transformer primary top terminal is connected to the VREG pin on the PGA450-Q1 device, for single-
ended configuration.
Open
The transformer primary top terminal is not connected to the VREG pin on the PGA450-Q1 device.
Table 2. Default Jumper Settings
VP_OTP power supply input on the PGA450-Q1 device is not connected to the 8-V voltage supply on the
Open
EVM.
VPWR is connected to V_LIN, which is the LIN bus voltage.
The secondary of the transformer on the EVM is connected to the PGA450-Q1 device on the EVM.
The transformer primary terminal 1 is connected to the OUTA pin on the PGA450-Q1 device for push-pull
configuration.
Open
The transformer primary terminal 1 is not connected to the VREG pin on the PGA450-Q1 device.
Table 3. Default 0-Ω Resistor Setting
Install
DNP
The VP_OTP pin of the device does not have OTP programming voltage.
Copyright © 2012–2015, Texas Instruments Incorporated
Table 1. Jumpers
Function
Function
Function
Jumper Settings
(1)
PGA450Q1EVM User's Guide
5
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