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High-Density EVM Description
1 High-Density EVM Description
The
TLVM13660EVM
features the TLVM13660 synchronous buck power module configured for operation with
typical 3-V to 36-V input bus applications. This wide-V
operating margin to withstand supply-rail voltage transients.
The output voltage and switching frequency can each be set to one of five popular values by using configuration
jumpers. The EVM provides the full 6-A output current rating of the device. The selected input and output
capacitors accommodate the entire range of input voltage and the selectable output voltages on the EVM and
are available from multiple component vendors. Input and output voltage sense terminals and a test point header
facilitate measurement of the following:
•
Efficiency and power dissipation
•
Line and load regulation
•
Load transient response
•
Bode plot measurement (crossover frequency and phase margin)
The header also provides connections for enable ON/OFF (EN) and power good (PGOOD) indication. The
recommended
PCB layout
1.1 Typical Applications
•
Test and
measurement,
•
Factory automation and
•
Inverting buck-boost (IBB) circuits
1.2 Features and Electrical Performance
•
Complete 6-A buck power stage with integrated power MOSFETs, buck inductor, and PWM controller
•
Wide input voltage operating range of 3 V to 36 V (absolute maximum rating of 42 V)
•
Default output voltage and switching frequency of 5 V and 1 MHz, respectively. Use jumper options for
alternative configurations:
– 1.2 V, 500 kHz
– 1.8 V, 500 kHz
– 2.5 V, 600 kHz
– 3.3 V, 750 kHz
– –5 V, 1 MHz
•
High efficiency across a wide load-current range
– Full-load efficiency of 92% and 91.4% at V
– 95% and 93.5% efficiencies at half-rated load, V
– External bias option reduces no-load supply current and enhances
•
Improved
EMI performance
– Meets CISPR 11 and CISPR 32 Class B EMI standards for both conducted and radiated emissions
– Input π-stage EMI filter with electrolytic capacitor for parallel damping
– Parallel input and output paths with symmetrical capacitor layouts minimize radiated field coupling
– FPWM mode provides constant switching frequency across the full load range for predictable EMI
signature
– Integrated input, VCC, and bootstrap capacitors keep high slew-rate switching currents in low-area
conduction loops to mitigate radiated emissions.
•
Peak current-mode control architecture enables fast line and load transient response
– Integrated loop compensation and frequency-proportional slope compensation
•
Inherent protection features for robust and reliable design
– Overcurrent protection (OCP) with peak and valley current limits
– Thermal shutdown protection with hysteresis
– PGOOD indicator with 100-kΩ pullup resistor to VOUT
– Resistor-programmable input voltage UVLO set to turn on and off at V
•
Fully assembled, tested, and proven 4-layer
4
TLVM13660 36-V, 6-A Buck Regulator Evaluation Module User's Guide
maximizes thermal performance and minimizes output ripple and noise.
aerospace and defense
control,
general-purpose power supplies
requiring negative output voltage
= 12 V and 24 V, respectively
IN
for noise-sensitive applications
PCB design
Copyright © 2022 Texas Instruments Incorporated
range DC/DC solution offers outsized voltage rating and
IN
= 12 V and 24 V, respectively
IN
thermal performance
of 5.1 V and 3.65 V, respectively
IN
with 76-mm × 63-mm total footprint
www.ti.com
SLVUCF7 – MARCH 2022
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