Microchip MIC45116 Manual de Usario

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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
MIC45116
DS20005571A-page 2 2016 Microchip Technology Inc.
Package Type
MIC45116
8x8x3 QFN (MP)
1
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27
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4243444546
47
48
4950
5152
SW ePAD
PGND ePAD
VOUT ePAD
PGND ePAD
PVIN
PVIN
KEEPOUT
KEEPOUT
KEEPOUT
PVDD
BST
BST
SW
SW
SW
VOUT
VOUT
VOUT
VOUT
NC
NC
VIN
PGND
PGND
EN
PG
FB
NC
NC
NC
NC
NC
NC
NC
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
KEEPOUT
NC
NC
NC
PGND
PVIN
SW
SW
SW
SW
ILIM
KEEPOUT
PGND
PVDD
5VDD
PGND
2016 Microchip Technology Inc. DS20005571A-page 3
MIC45116
Functional Block Diagram
MIC45116
CONTROLLER
VDD BST
VIN
VIN BST
5VDD PVDD
PVDD PVDD
PVIN
DH
SW
EN EN SW VOUT
PG PG
DL
FB FB
PGNDPGNDAGND ILIM
ILIM

Especificaciones del producto

Marca: Microchip
Categoría: No categorizado
Modelo: MIC45116
Color del producto: Wit
Peso.: 7250 g
Ancho: 195 mm
Profundidad: 502 mm
Altura: 447 mm
Amable: PC
factor vorm: Midi Tower
Altavoces incorporados: Nee
Entradas de audio: Ja
Salida de audio: Ja
Material: Plastic, Steel
Número de puertos USB 3.2 Gen 1 (3.1 Gen 1) Tipo A: 2
Fuente de alimentación incluida: Nee
Número de bahías de 5,25": 3
Número de bahías de 3,5": 6
Tamaños de disco duro admitidos: 2.5, 3.5 "
Número de ranuras de expansión: 7
Factores de forma de placa base compatibles: ATX, Micro ATX, Mini-ITX
Ventana lateral: Nee
Altura máxima del refrigerador de la CPU: 158 mm
Longitud máxima de la tarjeta gráfica: 400 mm
Ventiladores traseros instalados: 1x 120 mm

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