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PDF MIC45116 Data sheet ( Hoja de datos )
| Número de pieza | MIC45116 | |
| Descripción | 20V/6A DC/DC Power Module | |
| Fabricantes | Microchip | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MIC45116 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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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
(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
V
IN
CIN
PVDD
5VDD
10k PG
PVIN
VOUT
VIN MIC45116
FB
EN
SW
ILIM
PGND
CFF
CINJ RINJ
RLIM
VOUT
RFB1
RFB2
COUT
2016 Microchip Technology Inc.
DS20005571A-page 1
1 page  
MIC45116
TABLE 1-1: ELECTRICAL CHARACTERISTICS
Electrical Characteristics: VIN = VEN = 12V, VOUT = 3.3V, VBST – VSW = 5V, TJ = +25ºC. Bold values indicate
–40°C ≤ TJ ≤ +125°C, unless otherwise noted. (Note 1).
Symbol
Parameters
Min. Typ. Max. Units
Conditions
Power Supply Input
VIN, PVIN Input Voltage Range
IQ Quiescent Supply Current
(MIC45116-1)
IQ Quiescent Supply Current
(MIC45116-2)
IIN Operating Current
4.75 —
20
— 0.35 0.75
— 1.03 —
— 29.4 —
V
mA
mA
mA
ISHDN
Shutdown Supply Current
5VDD Output
VDD 5VDD Output Voltage
— 5.3 10 µA
4.8 5.2 5.4
V
UVLO
UVLO_HYS
—
5VDD UVLO Threshold
5VDD UVLO Hysteresis
5VDD Load Regulation
3.8 4.2 4.6
V
— 400 — mV
0.6 2 3.6 %
Reference
VFB Feedback Reference Voltage
0.792 0.8 0.808
0.784 0.8 0.816
V
IFB_BIAS FB Bias Current
— 5 500 nA
Enable Control
ENHIGH
ENLOW
ENHYS
IENBIAS
EN Logic Level High
EN Logic Level Low
EN Hysteresis
EN Bias Current
1.8 — — V
— — 0.6 V
— 200 — mV
— 5 10 µA
Oscillator
fSW
DMAX
DMIN
tOFF(MIN)
Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Minimum Off-Time
400 600 750 kHz
— 85 — %
— 0 —%
140 250 350
ns
Soft-Start
tSS Soft-Start Time
— 3.3 — ms
Short-Circuit Protection
VCL Current-Limit Threshold
–30 –14 0 mV
VSC Short-Circuit Threshold
–23 –7 9 mV
ICL Current-Limit Source Current
60 80 100 µA
ISC Short-Circuit Source Current
25 35 45 µA
Note 1: Specification for packaged product only.
—
VFB = 1.5V
VFB = 1.5V
PVIN = VIN = 12V,
VOUT = 1.8V, IOUT = 0A
(MIC45116-2)
VEN = 0V
VIN = 7V to 20V,
I5VDD = 10 mA
V5VDD Rising
V5VDD Falling
I5VDD = 0 mA to 40 mA
TJ = 25°C
–40°C ≤ TJ ≤ +125°C
VFB = 0.8V
—
—
—
VEN = 12V
IOUT = 2A
—
VFB = 1V
—
FB from 0V to 0.8V
VFB = 0.79V
VFB = 0V
VFB = 0.79V
VFB = 0V
2016 Microchip Technology Inc.
DS20005571A-page 5
5 Page 
MIC45116
FIGURE 2-19:
Power Dissipation (VIN =
5V) vs. Output Current (MIC45116-1).
FIGURE 2-22:
Power Dissipation (VIN =
5V) vs. Output Current (MIC45116-2).
FIGURE 2-20:
Power Dissipation (VIN =
12V) vs. Output Current (MIC45116-1).
FIGURE 2-23:
Power Dissipation (VIN =
12V) vs. Output Current (MIC45116-2).
FIGURE 2-21:
Power Dissipation (VIN =
18V) vs. Output Current (MIC45116-1).
FIGURE 2-24:
Power Dissipation (VIN =
18V) vs. Output Current (MIC45116-2).
2016 Microchip Technology Inc.
DS20005571A-page 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MIC45116.PDF ] | |
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