MIC45116 Datasheet, PDF (1/42 Pages) Microchip Technology – 20V/6A DC/DC Power Module

MIC45116
20V/6A DC/DC Power Module
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
(PV_IN) 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
V
IN
C_IN
PVDD
5VDD
10k _PG
PVIN
VOUT
VIN ^MIC45116
FB
EN
SW
ILIM
PGND
C_FF
C_INJ ^RINJ
R_LIM
V_OUT
R_FB1
R_FB2
C_OUT
 2016 Microchip Technology Inc.
DS20005571A-page 1