Texas Instruments 2.5A, 10.8 to 13.2 Vin, SWIFT™ Converter Evaluation Module TPS54260EVM-597 TPS54260EVM-597 데이터 시트
제품 코드
TPS54260EVM-597
Introduction
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1
Introduction
This user's guide contains background information for the TPS54260 as well as support documentation for
the TPS54260EVM-597 evaluation module (HPA597). Also included are the performance specifications,
the schematic, and the bill of materials for the TPS54260EVM-597.
the TPS54260EVM-597 evaluation module (HPA597). Also included are the performance specifications,
the schematic, and the bill of materials for the TPS54260EVM-597.
1.1
Background
The TPS54260 dc/dc converter is designed to provide up to a 2.5-A output from an input voltage source of
3.5 V to 60 V. Rated input voltage and output current range for the evaluation module are given in
3.5 V to 60 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 TPS54260 regulator. The switching frequency is internally set at a
nominal 500 kHz. The high-side MOSFET is incorporated inside the TPS54260 package along with the
gate drive circuitry. The low drain-to-source on-resistance of the MOSFET allows the TPS54260 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 TPS54260 provides adjustable slow start and undervoltage
lockout inputs. The absolute maximum input voltage is 60 V for the TPS54260EVM-597.
nominal 500 kHz. The high-side MOSFET is incorporated inside the TPS54260 package along with the
gate drive circuitry. The low drain-to-source on-resistance of the MOSFET allows the TPS54260 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 TPS54260 provides adjustable slow start and undervoltage
lockout inputs. The absolute maximum input voltage is 60 V for the TPS54260EVM-597.
Table 1. Input Voltage and Output Current Summary
EVM
INPUT VOLTAGE RANGE
OUTPUT CURRENT RANGE
TPS54260EVM-597
VIN = 10.8 V to 13.2 V
0 A to 2.5 A
1.2
Performance Specification Summary
A summary of the TPS54260EVM-597 performance specifications is provided in
. Specifications
are given for an input voltage of V
IN
= 12 V and an output voltage of 3.3 V, unless otherwise specified. The
TPS54260EVM-597 is designed and tested for V
IN
= 10.8 V to 13.2 V. The ambient temperature is 25°C
for all measurements, unless otherwise noted. Although the EVM is designed and tested to operate from a
nominal 12 V input, the input bypass capacitors are rated for 100 V and the catch diode is rated for 60 V.
The EVM may be modified by the user to operate from input voltages up to the 60 V operating limit of the
TPS54260.
nominal 12 V input, the input bypass capacitors are rated for 100 V and the catch diode is rated for 60 V.
The EVM may be modified by the user to operate from input voltages up to the 60 V operating limit of the
TPS54260.
CAUTION
Caution: Risk of electric shock for voltages exceeding 50 VDC.
Table 2. TPS54260EVM-597 Performance Specification Summary
SPECIFICATION
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
IN
voltage range
10.8
12
13.2
V
Output voltage set point
3.3
V
Output current range
V
IN
= 10.8 V to 13.2 V
0
2.5
A
Line regulation
I
O
= 1.25 A, V
IN
= 10.8 V to 13.2 V
±0.01%
Load regulation
V
IN
= 12 V, I
O
= 0.001 A to 2.5A
±0.15%
Load transient response
I
O
= 1.5 A to 2.5 A
Voltage change
–70
mV
Recovery time
0.3
ms
I
O
= 2.5 A to 1.5 A
Voltage change
70
mV
Recovery time
0.3
ms
Loop bandwidth
V
IN
= 12 V, I
O
= 2.5 A
31.5
kHz
Phase margin
V
IN
= 12 V , I
O
=2.5 A
64
°
Input ripple voltage
I
O
= 2.5 A
360
mVpp
Output ripple voltage
I
O
= 2.5 A
10
mVpp
Output rise time
6
ms
2
TPS54260EVM-597 2.5-A, SWIFT™ Regulator Evaluation Module
SLVU372 – March 2009
Copyright © 2009, Texas Instruments Incorporated