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Jumper Settings

6 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 and the rest of the EVM. The default settings and their effects are listed

below.

6.1 Jumpers

Table 1 shows the function of each specific jumper setting on the EVM.

Table 1. Jumpers

Reference Jumper Setting Function

Closed VP_OTP power supply input on the PGA450-Q1 is connected to the 8-V voltage supply on the EVM.

VPWR:VOTP

Open VP_OTP power supply input on the PGA450-Q1 is not connected to the 8-V voltage supply on the EVM.

Closed VPWR is connected to V_LIN, which is the LIN bus voltage.

VPWR:VLIN

Open VPWR is not connected to V_LIN, which is the LIN bus voltage.

Closed The secondary of the transformer on the EVM is connected to the PGA450-Q1 on the EVM.

JP3

Open The secondary of the transformer on the EVM is not connected to the PGA450-Q1 on the EVM.

The transformer primary top terminal is connected to the OUTA pin on PGA450-Q1, for push-pull

Closed

configuration.

(1)

JP4

Open The transformer primary top terminal is not connected to the OUTA pin on PGA450-Q1.

The transformer primary top terminal is connected to the VREG pin on PGA450-Q1, for single-ended

Closed

configuration.

JP5

Open The transformer primary top terminal is not connected to the VREG pin on PGA450-Q1.

(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

6.2 Default Jumper Settings

Table 2. Default Jumper Settings

Reference Jumper Position Function

VPWR:VOTP Open VP_OTP power supply input on the PGA450-Q1 is not connected to the 8-V voltage supply on the EVM.

VPWR:VLIN Closed VPWR is connected to V_LIN, which is the LIN bus voltage.

JP3 Closed The secondary of the transformer on the EVM is connected to PGA450-Q1 on the EVM.

The transformer primary terminal 1 is connected to the OUTA pin on the PGA450-Q1 for push-pull

JP4 Closed

configuration.

JP5 Open The transformer primary terminal 1 is not connected to the VREG pin on the PGA450-Q.

6.3 0-Ω Resistors

The 0-Ω resistor R2 is used to connect the programming voltage to the PGA450-Q1 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.

Table 3. Default 0-Ω Resistor Setting

Reference Install Function

R2 DNP The VP_OTP pin of the device does not have OTP programming voltage.

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.

SLDU007A–March 2012–Revised January 2013 PGA450-Q1 EVM User’s Guide

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