Texas Instruments TPS54162EVM Evaluation Module TPS54162EVM TPS54162EVM Datenbogen
Produktcode
TPS54162EVM
LPM
Disabled
LPM
Enabled
LPM
Disabled with
Protection Diode
æ
ö
´ ç
÷
è
ø
R6
DisableVoltage = ENTHRES
1+
where the ENTHRES ~ 1V.
R7
Introduction
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1
Introduction
The Texas Instruments TPS54162EVM evaluation module (EVM) helps designers evaluate the operation
and performance of the TPS54162 Switch Mode Power Supply – Buck Regulator. The device offers
configurability and can be setup to switch from 200 kHz up to 2.2 MHz.
and performance of the TPS54162 Switch Mode Power Supply – Buck Regulator. The device offers
configurability and can be setup to switch from 200 kHz up to 2.2 MHz.
The EVM contains one DC / DC converter (see
).
Table 1. Device and Package Configurations
Converter
IC
Package
U1
TPS54162QPWPQ1
PWP-20
2
Setup
This section describes the jumpers and connectors on the EVM as well and how to properly connect, set
up and use the TPS54162EVM.
up and use the TPS54162EVM.
2.1
Input/Output Connector Description
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.
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 (Vout)
and ground (GND) connection to allow the user to attach the EVM to a cable harness.
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 f
be used to synchronize the switching frequency for multiple devices. The external clock frequency must
meet the f
sw
< f
ext
< 2 × f
sw
guideline, if used.
JP1 – LPM is the jumper used to enable Low Power Mode. The jumper allows LPM to be enabled or
disabled. The "disabled with protection diode" selection should be used if the output voltage is
programmed for voltages greater than 5 V. The external zener prevents over voltage damage to the LPM
input.
disabled. The "disabled with protection diode" selection should be used if the output voltage is
programmed for voltages greater than 5 V. The external zener prevents over voltage damage to the LPM
input.
Figure 1. LPM Jumper Settings
JP2 – Enable is the jumper used to enable the converter. The converter is enabled when the enable is
high and disabled when low. The jumper placement allows the converter to be enabled or disabled.
high and disabled when low. The jumper placement allows the converter to be enabled or disabled.
Undervoltage lockout can be implemented by setting the R6 and R7 resistors to transition the enable (EN)
input low as the supply voltage drops. The equation to set the values for R6 and R7 is:
input low as the supply voltage drops. The equation to set the values for R6 and R7 is:
(1)
Resistor R7 is not populated on this EVM to reduce the quiescent supply current if this feature is not
required.
required.
2
TPS54162EVM
SLVU348 – October 2009
Copyright © 2009, Texas Instruments Incorporated