Texas Instruments Evaluation Module for TPS54319 Step-Down SWIFT DC/DC Converter TPS54319EVM-626 TPS54319EVM-626 데이터 시트
제품 코드
TPS54319EVM-626
Introduction
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1
Introduction
This user's guide contains background information for the TPS54319 as well as support documentation for
the TPS54319EVM-626 evaluation module (HPA597). Also included are the performance specifications,
the schematic, and the bill of materials for the TPS54319EVM-626.
the TPS54319EVM-626 evaluation module (HPA597). Also included are the performance specifications,
the schematic, and the bill of materials for the TPS54319EVM-626.
1.1
Background
The TPS54319 dc/dc converter is designed to provide up to a 3-A output from an input voltage source of
2.95 V to 6 V. Rated input voltage and output current range for the evaluation module are given in
2.95 V to 6 V. Rated input voltage and output current range for the evaluation module are given in
. This evaluation module is designed to demonstrate the small, printed-circuit-board areas that may
be achieved when designing with the TPS54319 regulator. The switching frequency is externally set at a
nominal 1000 kHz. The both high-side and low-side MOSFETs are incorporated inside the TPS54319
package along with the gate drive circuitry. The low drain-to-source on-resistance of the MOSFETs allows
the TPS54319 to achieve high efficiencies and helps keep the junction temperature low at high output
currents. The compensation components are external to the integrated circuit (IC), and an external divider
allows for an adjustable output voltage. Additionally, the TPS54319 provides adjustable slow start and
undervoltage lockout inputs. The absolute maximum input voltage is 7 V for the TPS54319EVM-626.
nominal 1000 kHz. The both high-side and low-side MOSFETs are incorporated inside the TPS54319
package along with the gate drive circuitry. The low drain-to-source on-resistance of the MOSFETs allows
the TPS54319 to achieve high efficiencies and helps keep the junction temperature low at high output
currents. The compensation components are external to the integrated circuit (IC), and an external divider
allows for an adjustable output voltage. Additionally, the TPS54319 provides adjustable slow start and
undervoltage lockout inputs. The absolute maximum input voltage is 7 V for the TPS54319EVM-626.
Table 1. Input Voltage and Output Current Summary
EVM
INPUT VOLTAGE RANGE
OUTPUT CURRENT RANGE
TPS54319EVM-626
VI
N
= 3 V to 6 V
0 A to 2.5 A
1.2
Performance Specification Summary
A summary of the TPS54319EVM-626 performance specifications is provided in
. Specifications
are given for an input voltage of V
IN
= 5 V and an output voltage of 1.8 V, unless otherwise specified. The
TPS54319EVM-626 is designed and tested for V
IN
= 3 V to 6 V. The ambient temperature is 25°C for all
measurements, unless otherwise noted.
Table 2. TPS54319EVM-626 Performance Specification Summary
SPECIFICATION
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
IN
voltage range
3
5
6
V
Output voltage set point
1.8
V
Output current range
V
IN
= 3 V to 6 V
0
3
A
Line regulation
I
O
= 1.5 A, V
IN
= 3 V to 6 V
±0.06%
Load regulation
V
IN
= 5 V, I
O
= 0.001 A to 3 A
±0.15%
Voltage change
–100
mV
I
O
= 0 A to12.5 A
Recovery time
0.1
ms
Load transient response
Voltage change
100
mV
I
O
= 1.5 A to 0 A
Recovery time
0.1
ms
Loop bandwidth
V
IN
= 5 V, I
O
= 3 A
50
kHz
Phase margin
V
IN
= 5 V , I
O
=3 A
49
°
Input ripple voltage
I
O
= 3 A
100
mV
PP
Output ripple voltage
I
O
= 3 A
10
mV
PP
Output rise time
6
ms
Operating frequency
1000
kHz
Maximum efficiency
TPS54319EVM-626, V
IN
= 3.3 V, I
O
= 0.5 A
93.8 %
2
TPS54319EVM-626 3-A, SWIFT™ Regulator Evaluation Module
SLVU377 – May 2010
Copyright © 2010, Texas Instruments Incorporated