Texas Instruments TPS54160EVM-230, Руководство пользователя

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3.1.1 Modifications of the Top Converter
3.2 Bottom Converter Specification
Performance Specifications
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Table 1. Top Converter Specifications
SPECIFICATION TEST CONDITIONS MIN TYP MAX UNIT
VIN input voltage range 31.5 42 52.5 V
Output voltage 5.0 V
Output current range 0 1.5 A
1 %/V
Load regulation Vin = 42 V 0.13 %/A
Voltage change 225 mV
Load transient response
Recovery time 1.0 ms
Loop bandwidth 29.8 kHz
Phase margin 43
°
Output voltage ripple Vin = 42 V, Iout = 1.5 V 10 mVpp
Operating frequency 750 kHz
Maximum efficiency Vin = 42 V, Iout = 800 mA 81.5%
Converter enable voltage Vin rising, Io = 1 A 25.8 V
Converter disable voltage Vin falling, Io = 1 A 25.5 V
Output rise time 32 ms
The top converter is meant to show a small solution size so most of the parts have been selected for their
small size. This makes modifications to the top converter difficult since many components are 0402 size.
Additionally, to reduce size, there are no additional connectors or jumpers to connect control signals to
external circuits. The bottom converter was designed to be more adjustable and accommodate off board
signals and parts that are easier to solder. The bottom converter should be used to evaluate circuit
modifications.
Table 1 provides a summary of the top converters specifications. The bottom converter is designed and
tested for VIN = 6.0V to 60V. Operation at other input voltages is possible, but some performance
specifications will vary compared to those shown in
Table 2 . The ambient temperature is 25
°
C for all
measurements, unless otherwise noted.
Table 2. Bottom Converter Specifications
SPECIFICATION TEST CONDITIONS MIN TYP MAX UNIT
VIN input voltage range 6 60 V
Output voltage 3.3 V
Output current range 0 1.5 A
Line regulation Iout = 1.5 A, Vin = 6 V to 60 V 0.1 %/V
Load regulation 0.11 %/A
Voltage change 120 mV
Load transient response
Recovery time 2.0 ms
Loop bandwidth 18.5 kHz
Phase margin 72
°
Output voltage ripple 40 mVpp
Operating frequency 415 kHz
Maximum efficiency Vin = 5 V, Iout = 200 mA 94.60%
Output rise time 32 ms
TPS54160EVM-230 4 SLVU270 – September 2008
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