Texas Instruments Integrated 5 A, 24 V Wide Input Range Boost DC/DC Regulator Evaluation Module TPS55330EVM-017 TPS55330EVM-017 Scheda Tecnica
Codici prodotto
TPS55330EVM-017
OUT
V
R1
R2
1
1.229V
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=
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Background
1
Background
The TPS55330 DC/DC converter is a step-up boost converter. Rated input voltage and output current
range for the evaluation module are given in
range for the evaluation module are given in
. This EVM demonstrates the performance of the
TPS55330 in an example application and accommodates evaluation of other boost applications supported
by the TPS55330. This design shows that a small printed-circuit-board area is possible when designing
with the TPS55330 regulator. However, appropriate sizing of the inductor and diode for the desired
application can further reduce the board area. The switching frequency is externally set at a nominal 600
kHz. The 24-V, 5-A, low-side MOSFET is incorporated inside the TPS55330 package along with the gate-
drive circuitry. The low drain-to-source on-resistance of the MOSFET achieves high efficiencies with the
TPS55330. The compensation components are external to the integrated circuit (IC). The absolute
maximum input voltage is 18 V for the EVM.
by the TPS55330. This design shows that a small printed-circuit-board area is possible when designing
with the TPS55330 regulator. However, appropriate sizing of the inductor and diode for the desired
application can further reduce the board area. The switching frequency is externally set at a nominal 600
kHz. The 24-V, 5-A, low-side MOSFET is incorporated inside the TPS55330 package along with the gate-
drive circuitry. The low drain-to-source on-resistance of the MOSFET achieves high efficiencies with the
TPS55330. The compensation components are external to the integrated circuit (IC). The absolute
maximum input voltage is 18 V for the EVM.
Table 1. Input Voltage and Output Current Summary
EVM
Input Voltage Range
Maximum Output Current
TPS55330EVM-017
V
IN
= 2.9 V to 4.2 V
I
OUT
max = 2.1 A
2
Performance Specification Summary
provides a summary of the EVM performance specifications. Specifications are given for an input
voltage of V
IN
= 3.6 V with an output voltage of 5 V, unless otherwise specified. The ambient temperature
is 25°C for all measurements, unless otherwise noted.
Table 2. Performance Specification Summary
Specification
Test Conditions
Min
Typ
Max
Unit
V
IN
voltage range
2.9
3.6
4.2
V
Output voltage set point
5
V
Line regulation
I
OUT
= 2.1 A, V
IN
= 2.9 V to 4.2 V
±0.1%
Operating frequency
600
kHz
Output current range
0.001
2.1
A
Load regulation
I
OUT
= 1 mA to 2.1 A
±0.1%
Voltage change
–220
mV
I
OUT
= 525 mA to 1.575 A
Recovery time
400
µs
Load transient response
Voltage change
180
mV
I
OUT
= 1.575 A to 525 mA
Recovery time
400
µs
Loop bandwidth
I
OUT
= 2.1 A
10
kHz
Phase margin
I
OUT
= 2.1 A
76
°
Output ripple voltage
I
OUT
= 2.1 A
20
mVpp
Maximum efficiency
TPS55330EVM-017, V
IN
= 4.2 V, I
OUT
= 700 mA
92.5%
3
Modifications
These evaluation modules provide access to the features of the TPS55330. Some modifications to this
module are possible.
module are possible.
3.1
Output Voltage Set Point
The resistor divider network of R1 and R2 sets the output voltage. Keep R2 fixed at or close to 10 k
Ω.
Change the output voltage of the EVM by changing the value of resistor R1. Calculate the value of R1 for
a specific output voltage by using
a specific output voltage by using
.
(1)
Note that V
IN
must be in a range so that the on-time is greater than the minimum controllable on-time (77
ns typical), and the maximum duty cycle is less than 89% minimum and 93% typical.
2
TPS55330EVM-017 2.9-V to 4.2-V Input, 5.0-V Output Boost Evaluation
SLVU930 – July 2013
Module
Copyright © 2013, Texas Instruments Incorporated