Datasheet

2 Setup
2.1 Input/Output Connector Description
ENA
disabled
ENA
enabled
2.2 Setup
2.3 Operation
2.4 EMC Filter
3 Board Layout
Setup www.ti.com
This section describes the jumpers and connectors on the EVM as well and how to properly connect, set
up and use the TPS55332EVM.
J1 – Input is the power input terminal for the converter. The terminal block provides a power (Vbat) and
ground (GND) connection to allow the user to attach the EVM to a cable harness.
J2 – Output is the regulated output voltage for the converter. The terminal block provides a power (V
OUT
)
and ground (GND) connection to allow the user to attach the EVM to a cable harness.
J3 – Sync is the input terminal for an optional external input clock to the converter. The external clock can
be used to synchronize the switching frequency for multiple devices. The external clock frequency must
meet the Fsw < Fext < 2 × Fsw guideline, if used.
JP1 – Enable is the jumper used to enable the converter. The converter will be enabled when the Enable
is high and disabled when low. The jumper placement allows the converter to be enabled or disabled.
Figure 1. Enable Jumper Settings
The input voltage range for the converter is 3.6 volts to 24 volts. A load should be applied to the Output
terminal for proper operation.
For proper operation of the TPS55332, JP1 should be properly configured. The recommended setting,
using shorting blocks.
JP1 to Enabled
In this configuration, the device will power up when power is applied.
The EVM has a pi filter input stage to provide improved EMC performance. A reverse battery protection
diode, D2, is also installed. The diode and pi filter are not required for normal operation of the boost
regulator.
Figure 2 , Figure 3 and Figure 4 show the board layout for the TPS55332EVM PWB. A jumper is provided
to Enable the device.
The TPS55332 are high efficiency, but does dissipate power. The PowerPAD™ package offers an
exposed thermal pad to enhance thermal performance. This must be soldered to the copper landing on
the PCB for optimal performance. The PCB provides 2 oz copper planes on the top and bottom to
dissipate heat.
2 TPS55332EVM SLVU319 – July 2009
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