Datasheet

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1 Introduction
This user's guide contains background information for the TPS5432 as well as support documentation for
the TPS5432EVM-116 evaluation module (PWR116). Also included are the performance specifications,
the schematic, and the bill of materials for the TPS5432EVM-116.
1.1 Background
The TPS5432 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
Table 1. This evaluation module is designed to demonstrate the small, printed-circuit-board areas that may
be achieved when designing with the TPS5432 regulator. The switching frequency is internally set at a
nominal 700 kHz. The both high-side and low-side MOSFETs are incorporated inside the TPS5432
package along with the gate drive circuitry. The low drain-to-source on-resistance of the MOSFETs allows
the TPS5432 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 TPS5432 provides adjustable slow start and
undervoltage lockout inputs. The absolute maximum input voltage is 7 V for the TPS5432EVM-116.
Table 1. Input Voltage and Output Current Summary
EVM INPUT VOLTAGE RANGE OUTPUT CURRENT RANGE
TPS5432EVM-116 VI
N
= 3 V to 6 V 0 A to 3 A
1.2 Performance Specification Summary
A summary of the TPS5432EVM-116 performance specifications is provided in Table 2. Specifications are
given for an input voltage of V
IN
= 5 V and an output voltage of 1.8 V, unless otherwise specified. The
TPS5432EVM-116 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. TPS5432EVM-116 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 ±0.02%
Load regulation V
IN
= 5 V, I
O
= 0.001 A to 3 A ±0.19%
Voltage change –105 mV
I
O
= 0.75 A to 2.25 A
Recovery time 175 µs
Load transient response
Voltage change 105 mV
I
O
= 2.25 A to 0.75 A
Recovery time 175 µs
Loop bandwidth V
IN
= 5 V, I
O
= 1.5 A 47 kHz
Phase margin V
IN
= 5 V , I
O
=1.5 A 68 °
Input ripple voltage I
O
= 3 A 175 mV
PP
Output ripple voltage I
O
= 3 A 10 mV
PP
Output rise time 4 ms
Operating frequency 700 kHz
Maximum efficiency TPS5432EVM-116, V
IN
= 3.3 V, I
O
= 0.3 A 95.1 %
2
TPS5432EVM-116 3-A, SWIFT™ Regulator Evaluation Module SLVU674–March 2012
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