Microchip MIC45116 Bedienungsanleitung
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2016 Microchip Technology Inc.DS20005571A-page 1
MIC45116
Features
•Up to 6A Output Current
•>93% Peak Efficiency
•Output Voltage of 0.8V to 85% of Input with ±1%
Accuracy
•Fixed 600 kHz Switching Frequency
•Enable Input and Open-Drain Power Good Output
•HyperLight Load® (MIC45116-1) Improves Light
Load Efficiency
•Hyper Speed Control®(MIC45116-2) Architecture
Enables Fast Transient Response
•Supports Safe Start-Up into Pre-Biased Output
•–40°C to +125°C Junction Temperature Range
•Thermal Shutdown Protection
•Short-Circuit Protection with Hiccup Mode
•Adjustable Current Limit
•Available in 52-Pin 8 mm x 8 mm x 3 mm QFN
Package
Applications
•High Power Density Point-of-Load Conversion
•Servers, Routers, Networking, and Base Stations
•FPGAs, DSP, and Low-Voltage ASIC Power
Supplies
•Industrial and Medical Equipment
General Description
The MIC45116 is a synchronous step-down regulator
module, featuring a unique adaptive ON-time control
architecture. The module incorporates a DC/DC
controller, power MOSFETs, bootstrap diode, bootstrap
capacitor, and an inductor in a single package;
simplifying the design and layout process for the end
user.
This highly integrated solution expedites system
design and improves product time-to-market. The
internal MOSFETs and inductor are optimized to
achieve high efficiency at a low output voltage. The fully
optimized design can deliver up to 6A current under a
wide input voltage range of 4.75V to 20V without
requiring additional cooling.
The MIC45116-1 uses HyperLight Load®(HLL) which
maintains high efficiency under light load conditions by
transitioning to variable frequency, discontinuous-
mode operation. The MIC45116-2 uses Hyper Speed
Control®architecture which enables ultra-fast load
transient response, allowing for a reduction of output
capacitance. The MIC45116 offers 1% output accuracy
that can be adjusted from 0.8V to 85% of the input
(PVIN) with two external resistors. Additional features
include thermal-shutdown protection, adjustable
current limit, and short-circuit protection. The
MIC45116 allows for safe start-up into a pre-biased
output.
Typical Application Circuit
MIC45116
8x8x3 QFN
MIC45116
VIN
CIN
10k
PVDD
5VDD
PG
PVIN
VIN
EN
PGND
ILIM
SW
FB
VOUT
VOUT
COUT
CFF RFB1
RFB2
RINJ
CINJ
RLIM
20V/6A DC/DC Power Module
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | MIC45116 |
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