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1.2
Performance Specification Summary
A summary of the performance specifications is provided in
voltage of 3.6 V and an output voltage of 0.96 V, unless otherwise specified. The TPS650380 is designed
and tested for V
= 2.5 V to 5.5 V. The ambient temperature is 25°C for all measurements and the default
IN
register settings are used, unless otherwise noted.
SPECIFICATION
V
voltage range
IN
Output voltage set point - each output rail
Output current range - DCDC_A
Output current range - DCDC_B
Output current range - DCDC_C
Line regulation - each output rail
Load regulation - DCDC_A
Load transient response - DCDC_A
Input ripple voltage - DCDC_A
Output ripple voltage - DCDC_A
Maximum efficiency - DCDC_A
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
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.
SLVU720A – June 2012 – Revised November 2012
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Table 1. Performance Specification Summary
Programmable in 10 mV steps
I
= 3.4A, I
OUTA
DCDC_A = DCDC_B = DCDC_C = 0.96V
V
= 3.6V, DCDC_A = 0.96V, FPWM_A = 0
IN
I
= 3A to 5A
OUTA
I
= 5A to 3A
OUTA
V
= 3.6V, DCDC_A = 0.96V, I
IN
DCDC_B and DCDC_C disabled, measured
across C13
V
= 3.6V, DCDC_A = 0.96V, I
IN
DCDC_B and DCDC_C disabled, measured
across C6
V
= 3.6V, DCDC_A = 0.96V, I
IN
. Connect input supply's sense leads to this point. Monitor the V
IN
Copyright © 2012, Texas Instruments Incorporated
Table
1. Specifications are given for an input
TEST CONDITIONS
= 1.85A, I
= 0.9A,
OUTB
OUTC
Voltage change
Recovery time
Voltage change
Recovery time
= 5A,
OUTA
= 5A,
OUTA
= 200mA
OUT
Setup
MIN
TYP
MAX
UNIT
2.5
3.6
5.5
V
0.5
1.77
V
0
5
A
0
2
A
0
1.8
A
±0.15%
+0.65% /
–0.15%
50
mV
4
μs
50
mV
3
μs
35
mV
14
mV
90.1%
voltage at this
IN
TPS650380EVM-054
PP
PP
3
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