Texas Instruments PWR054-001, User Manual

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Setup
1.2 Performance Specification Summary
A summary of the performance specifications is provided in Table 1 . Specifications are given for an input
voltage of 3.6 V and an output voltage of 0.96 V, unless otherwise specified. The TPS650380 is designed
and tested for V
IN
= 2.5 V to 5.5 V. The ambient temperature is 25°C for all measurements and the default
register settings are used, unless otherwise noted.
Table 1. Performance Specification Summary
SPECIFICATION TEST CONDITIONS MIN TYP MAX UNIT
V
IN
voltage range 2.5 3.6 5.5 V
Output voltage set point - each output rail Programmable in 10 mV steps 0.5 1.77 V
Output current range - DCDC_A 0 5 A
Output current range - DCDC_B 0 2 A
Output current range - DCDC_C 0 1.8 A
I
OUTA
= 3.4A, I
OUTB
= 1.85A, I
OUTC
= 0.9A,
Line regulation - each output rail ±0.15%
DCDC_A = DCDC_B = DCDC_C = 0.96V
+0.65% /
Load regulation - DCDC_A V
IN
= 3.6V, DCDC_A = 0.96V, FPWM_A = 0
–0.15%
Voltage change 50 mV
I
OUTA
= 3A to 5A
Recovery time 4
μ
s
Load transient response - DCDC_A
Voltage change 50 mV
I
OUTA
= 5A to 3A
Recovery time 3 μ s
V
IN
= 3.6V, DCDC_A = 0.96V, I
OUTA
= 5A,
Input ripple voltage - DCDC_A DCDC_B and DCDC_C disabled, measured 35 mV
PP
across C13
V
IN
= 3.6V, DCDC_A = 0.96V, I
OUTA
= 5A,
Output ripple voltage - DCDC_A DCDC_B and DCDC_C disabled, measured 14 mV
PP
across C6
Maximum efficiency - DCDC_A V
IN
= 3.6V, DCDC_A = 0.96V, I
OUT
= 200mA 90.1%
2 Setup
This section describes the jumpers and connectors on the EVM as well as how to properly connect, set
up, and use the TPS650380EVM-054 (PWR054-001).
2.1 Connector and Jumper Descriptions
2.1.1 J1 – V
IN
This header is for the positive input supply voltage to the converter. Connect the input supply at this point
if the input current remains below 1 A. If the input current will exceed 1A, use terminal block J16 instead.
The leads to the input supply should be twisted and kept as short as possible to minimize EMI
transmission and reduce inductive voltage droop during a load transient event. This voltage should be
between 2.5 V and 5.5 V.
2.1.2 J2 – S+ and S-
Sense connector for V
IN
. Connect input supply's sense leads to this point. Monitor the V
IN
voltage at this
point.
2.1.3 J3 – GND
This is the return connection for the input power supply of the converter. Connect the input supply at this
point if the input current remains below 1 A. If the input current will exceed 1A, use terminal block J16
instead. The leads to the input supply should be twisted and kept as short as possible to minimize EMI
transmission and reduce inductive voltage droop during a load transient event.
3 SLVU720A – June 2012 – Revised November 2012 TPS650380EVM-054
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