Texas Instruments Evaluation Module for TPS54329E TPS54329EEVM-056 TPS54329EEVM-056 데이터 시트
제품 코드
TPS54329EEVM-056
R1
VO = 0.765
1+
R 2
æ
ö
´ ç
÷
è
ø
Introduction
1
Introduction
The TPS54329E is a single, adaptive on-time, D-CAP2
™
-mode, synchronous buck converter requiring a
low, external component count. The D-CAP2
™
control circuit is optimized for low-ESR output capacitors
such as POSCAP, SP-CAP, or ceramic types and features fast transient response with no external
compensation. The switching frequency is internally set at a nominal 650 kHz. The high-side and low-side
switching MOSFETs are incorporated inside the TPS54329E package along with the gate drive circuitry.
The low drain-to-source on-resistance of the MOSFETs allows the TPS54329E to achieve high
efficiencies and helps keep the junction temperature low at high-output currents. The TPS54329E also
features auto-skip Eco-mode
compensation. The switching frequency is internally set at a nominal 650 kHz. The high-side and low-side
switching MOSFETs are incorporated inside the TPS54329E package along with the gate drive circuitry.
The low drain-to-source on-resistance of the MOSFETs allows the TPS54329E to achieve high
efficiencies and helps keep the junction temperature low at high-output currents. The TPS54329E also
features auto-skip Eco-mode
™
operation for improved light-load efficiency. The TPS54329E dc/dc
synchronous converter is designed to provide up to a 2-A output from an input voltage source of 4.5 V to
18 V. The output voltage range is from 0.76 V to 7 V. Rated input voltage and output current range for the
evaluation module are given in
18 V. The output voltage range is from 0.76 V to 7 V. Rated input voltage and output current range for the
evaluation module are given in
The TPS54329EEVM-056 evaluation module circuit is a single, synchronous buck converter providing
1.05 V at 3 A from 4.5-V to 18-V input. This user
1.05 V at 3 A from 4.5-V to 18-V input. This user
’
s guide describes the TPS54329EEVM-056 performance.
Table 1. Input Voltage and Output Current Summary
EVM
Input Voltage Range
Output Current Range
TPS54329EEVM-056
V
IN
= 4.5 V to 18 V
0 A to 3 A
2
Performance Specification Summary
A summary of the TPS54329EEVM-056 performance specifications is provided in
. Specifications
are given for an input voltage of V
IN
= 12 V and an output voltage of 1.05 V, unless otherwise noted. The
ambient temperature is 25
°
C for all measurement, unless otherwise noted.
Table 2. TPS54329EEVM-056 Performance Specifications Summary
Specifications
Test Conditions
Min
Typ
Max
Unit
Input voltage range (V
IN
)
4.5
12
18
V
Output voltage
1.05
V
Operating frequency
V
IN
= 12 V, I
O
= 1 A
650
kHz
Output current range
0
3
A
+/-
%
Line regulation
I
O
= 1.5 A
0.32
+1.02/-
Load regulation
V
IN
= 12 V
%
0.10
Over current limit
V
IN
= 12 V, L
O
= 1.5
µ
H
3.5
4.2
5.7
A
Output ripple voltage
V
IN
= 12 V, I
O
= 3 A
15
mV
PP
Maximum efficiency
V
IN
= 5 V, I
O
= 0.6 A
86.2
%
3
Modifications
These evaluation modules are designed to provide access to the features of the TPS54329E. Some
modifications can be made to this module.
modifications can be made to this module.
3.1
Output Voltage Setpoint
To change the output voltage of the EVMs, it is necessary to change the value of resistor R1. Changing
the value of R1 can change the output voltage above 0.765 V. The value of R1 for a specific output
voltage can be calculated using
the value of R1 can change the output voltage above 0.765 V. The value of R1 for a specific output
voltage can be calculated using
.
For output voltage from 0.76 V to 7 V:
(1)
3
SLVU487
–
October 2011
TPS54329EEVM-056, 3-A, SWIFT
™
Regulator Evaluation Module
Copyright
©
2011, Texas Instruments Incorporated