Texas Instruments Evaluation Module for TPS61175 3A High Voltage Boost Converter TPS61175EVM-588 TPS61175EVM-588 Datenbogen
Produktcode
TPS61175EVM-588
Introduction
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1
Introduction
This section contains background information for the TPS61175EVM-588 evaluation module.
1.1
Background
This TPS61175EVM-588 SEPIC is designed to boost and buck input voltages ranging from 9-V to 24-V to
a 12-V output. The goal of the EVM is to facilitate evaluation of the split-rail TPS61175 SEPIC power
supply solution. The EVM uses the TPS61175 adjustable output boost converter, external schottky diode,
input, output, and flying capacitors, a coupled inductor, split-rail circuitry, and the appropriate feedback
and compensation components to provide a regulated 12-V.
a 12-V output. The goal of the EVM is to facilitate evaluation of the split-rail TPS61175 SEPIC power
supply solution. The EVM uses the TPS61175 adjustable output boost converter, external schottky diode,
input, output, and flying capacitors, a coupled inductor, split-rail circuitry, and the appropriate feedback
and compensation components to provide a regulated 12-V.
1.2
Performance Specification Summary
provides a summary of the TPS61775EVM-588 performance specification. All specifications are
given for ambient temperature of 25°C.
Table 1. Performance Specification Summary for V
IN
= 9.0 V
PARAMETER
CONDITIONS
MIN
NOM
MAX
UNIT
INPUT CHARACTERISTICS
V
IN
Input voltage
5
9
18
V
I
IN(AVG)
Average input current
I
O
= 750 mA, V
IN
= 9V
1.3
A
f
SW
Switching frequency
750
kHz
OUTPUT CHARACTERISTICS
V
O
Output voltage
11
(1)
12
13
(1)
V
Line regulation
8.5 V < V
IN
< 9.5 V at I
O
= 400 mA
1%
Δ
V
O
/
Δ
V
IN
Load regulation
V
IN
= 9 V, 50 mA < I
O
< 375 mA
1.5%
Δ
V
O
/
Δ
I
O
Δ
V
O(PP)
Output voltage ripple
I
O
= 750 mA, V
IN
= 9V
150
mV
PP
I
O
Output current
V
IN
= 9V
1
750
mA
TRANSIENT RESPONSE
Δ
I
O
Load step
V
IN
= 9V
0.325
A
Δ
V
O
V
O
undershoot
V
IN
= 9V
0.4
V
(1)
Minimum and maximum values include 1% resistor tolerance as well as IC feedback reference voltage tolerance.
Table 2. Performance Specification Summary for V
IN
= 24.0 V with Split Rail Circuitry Installed
PARAMETER
CONDITIONS
MIN
NOM
MAX
UNIT
INPUT CHARACTERISTICS
V
IN
Input voltage
9
18
24
V
I
IN(AVG)
Average input current
O
= 750 mA, V
IN
= 24V
0.5
A
f
SW
Switching frequency
750
kHz
OUTPUT CHARACTERISTICS
V
O
Output voltage
23
(1)
24
25
(1)
V
Line regulation
23 V < V
IN
< 24 V at I
O
= 750 mA
1%
Δ
V
O
/
Δ
V
IN
Load regulation
V
IN
= 12 V, 50 mA < I
O
< 375 mA
1%
Δ
V
O
/
Δ
I
O
Δ
V
O(PP)
Output voltage ripple
I
O
= 750 mA, V
IN
= 24V
150
mV
PP
I
O
Output current
V
IN
= 24V
1
0.750
A
TRANSIENT RESPONSE
Δ
I
TRAN
Load step
V
IN
= 24V
0.325
A
Δ
V
TRAN
V
O
undershoot
V
IN
= 24V
250
mV
(1)
Minimum and maximum values include 1% resistor tolerance as well as IC feedback reference voltage tolerance
2
TPS61175EVM-588
SLVU359 – January 2010
Copyright © 2010, Texas Instruments Incorporated