Texas Instruments TPS566235EVM-036, User Manual

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REF
REF OUT ) BOT (
) TOP (
V
) V V ( R
R
˜
Introduction
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2 SLUUC03 – February 2019
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Copyright © 2019, Texas Instruments Incorporated
TPS566235EVM-036 evaluation module
1 TPS566235EVM-036 Specifications Summary
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2
2 MODE Pin Resistor Setting
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3
3 Connectors and Test Points Description
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8
4 List of Materials
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13
Trademarks
1 Introduction
TPS566235 device is a high efficiency, cost effective, synchronous BUCK DC/DC converter with
integrated FETs. It employs the proprietary D-CAP3™ control mode that is optimized for low-ESR output
capacitors and features fast transient response without external compensation. The operating input
voltage range is 4.5 V to 18 V, the output voltage can be programmed between 0.6 V and 7 V, and the
output current is up to 6 A. The operating frequency is internally set to nominal 600 kHz in CCM, and
there are 3 different operation modes can be configured by MODE pin at light load: Eco-Mode, Out-of-
Audio, and FCCM. TPS566235 provides rich functions as well as excellent power supply performance,
internal fixed 1mSec soft start, power good indicator, and full protections including UVLO, OCP, OVP,
UVP, OTP. The devices are available in 3.0-mm × 2.0-mm HotRod™ package and the die operating
temperature is specified from -40°C to 125°C.
TPS566235EVM-036 evaluation module (EVM) is designed for accessing to the features of TPS566235.
2 Specification Summary
A summary of TPS566235EVM-036 specification is provided in Table 1 . TPS566235EVM-036 is designed
for V
IN
= 4.5 V - 18 V, V
OUT
= 1.05 V, the junction temperature T
J
is 25°C for all measurement, unless
otherwise noted.
Table 1. TPS566235EVM-036 Specifications Summary
SPECIFICATIONS TEST CONDITIONS MIN TYP MAX Unit
Input voltage 4.5 12 18 V
Output voltage set point 1.05 V
Output current range 0 6 A
FB voltage T
J
= 25°C 594 600 606 mV
Operating frequency V
IN
= 12 V, I
OUT
= 6 A 600 kHz
Soft start time Internal fixed soft start time 1 mS
Over current limit Valley current set point 7.6 A
3 Modifications
Some modifications can be made to this module for different output voltages and different operation
modes.
3.1 Output Voltage Setpoint
V
OUT
is set by the resistor divider network of R3 (R
TOP
) and R8 (R
BOT
). Set R8 value firstly, then changing
R3 value can change V
OUT
above the reference voltage V
REF
= 0.6 V. The R3 value for a specific output
voltage can be calculated using Equation 1 .
(1)