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1
Introduction
This user's guide contains background information for the TPS43061 as well as support documentation for
the TPS43061EVM-198 evaluation module (PWR198). Also included are the performance specifications,
schematic, and the bill of materials for the EVM.
1.1
Background
The TPS43061 is a DC-DC synchronous boost controller designed for a maximum output voltage of 60 V
from an input voltage source of 4.5 V to 38 V. It has a 5.5-V gate-drive supply optimized for use with low
Qg NexFETs. Rated input voltage and output current range for the evaluation module are given in
This evaluation module is designed to demonstrate the small, printed-circuit-board areas that are possible
when designing with the TPS43061 controller. The switching frequency is externally set at a nominal 750
kHz. The gate-drive circuitry for the external high-side and low-side FET is incorporated inside the
TPS43061 package. The PWR198 uses the CSD86330Q3D NexFET power block integrating both the
high-side and low-side FETs. External inductor DCR or resistor current sensing allows for an adjustable
cycle-by-cycle current limit. The compensation components are external to the integrated circuit (IC), and
an external resistor divider allows for an adjustable output voltage. Additionally, the TPS43061 provides an
adjustable undervoltage lockout with hysteresis through an external resistor divider, adjustable slow-start
time with an external capacitor and a power good output voltage indicator. The absolute maximum input
voltage for the PWR198 based on the selected external components is 25 V.
EVM
TPS43061EVM-198
1.2
Performance Specification Summary
A summary of the EVM performance specifications is provided in
input voltage of V
IN
and tested for V
= 6 V to 12.6 V. The ambient temperature is 25°C for all measurements, unless
IN
otherwise noted.
Table 2. TPS43061EVM-198 Performance Specification Summary
Specification
V
voltage range
IN
Output voltage set point
Output current range
Line regulation
Load regulation
Load transient response
Loop bandwidth
Phase margin
Input voltage ripple
Output voltage ripple
Output rise time
Operating frequency
SLVU799A – November 2012 – Revised March 2013
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Table 1. Input Voltage and Output Current Summary
Input Voltage Range
V
= 6 V to 12.6 V
IN
= 9 V and an output voltage of 15 V, unless otherwise specified. This EVM is designed
V
= 6 V to 12.6 V
IN
I
= 2 A, V
OUT
V
= 9 V, I
IN
OUT
I
= 0.5 A to 1.5 A
OUT
I
= 1.5 A to 0.5 A
OUT
V
= 9 V, I
IN
OUT
V
= 9 V, I
IN
OUT
I
= 2 A
OUT
I
= 2 A
OUT
Copyright © 2012–2013, Texas Instruments Incorporated
Output Current Range
Table
Test Conditions
= 6 V to 12.6 V
IN
= 0.001 A to 2 A
Voltage change
Recovery time
Voltage change
Recovery time
= 2 A
= 2 A
Using the TPS43061 Boost Evaluation Module (EVM)
Introduction
I
= 0 A to 2 A
OUT
2. Specifications are given for an
MIN
TYP
MAX
6
9
12.6
15
0
±0.1%
±0.1%
–300
400
210
400
19
68
10
70
25
750
Table
1.
Unit
V
V
2
A
mV
µs
mV
µs
kHz
°
mVpp
mVpp
ms
kHz
3
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