Microchip MIC24066 Handleiding

Microchip Niet gecategoriseerd MIC24066

Lees hieronder de 📖 handleiding in het Nederlandse voor Microchip MIC24066 (38 pagina's) in de categorie Niet gecategoriseerd. Deze handleiding was nuttig voor 174 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

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
2022 Microchip Technology Inc. and its subsidiaries DS20006730A-page 1
MIC24066/7
Features
• Input Voltage Range: 4.5V to 36V
• Adjustable Output from 0.6V to 32V (also limited
by Duty Cycle)
• High Current Capability of 6A for MIC24066/7
• Adaptive Constant On Time Control
• 0.6V Internal Reference with ±1% Accuracy
• Up to 800 kHz Switching Frequency
• High Voltage Internal LDO for Single Supply
Operation
• Secondary LDO to Improve System Efficiency
• Supports Start-up to Pre-bias Output
• Internal Compensator for Tight Output Regulation
• Enable Function for Low Stand-by Current
• Programmable HLL/CCM Operation (MIC24067)
• Programmable Soft Start Time (MIC24066)
• Programmable Current Limit and Hiccup Short
Circuit Protection
• Thermal Shut Down with Hysteresis
• Compact Size: 5 mm x 6 mm 36-Pin Wettable
Flank VQFN
• -40°C to +125°C Junction Temperature Ranges
Applications
• Servers and Workstations
• Routers, Switches and Telecom Equipment
• Base Stations
• High Power Density Point-of-Load Conversion
General Description
The MIC24066/7 is a family of commercial 36V syn-
chronous switching regulators delivering 6A of load
current.
The MIC24066/7 are wide input range (4.5V-36V)
integrated FET switching regulator which supports 6A
load. These devices have an enhanced high voltage
COT controller co-packaged with a pair of N-Channel
FETS with improved avalanche rating.
The output voltage is adjustable down to 0.6V with ±1%
accuracy. The Hyper Speed Control® proprietary
architecture allows for ultra-fast transient response
while reducing the output capacitance.
These devices feature programmable switching
frequency from 270 kHz to 800 kHz. The operating
mode under light load conditions can be selected
between HyperLight Load® (HLL) mode and
Continuous Conduction Mode (CCM) in MIC24067.
HLL mode results in higher efficiency than that of the
CCM mode under light load conditions while the CCM
mode keeps the switching frequency almost constant
over the entire load current range. The enable pin (EN)
allows user to enable/disable the device operation. The
secondary LDO (powered by EXTVDD) allows user to
operate the system at increased efficiency by supplying
the device bias power from the output of the switching
regulator.
An open drain PGOOD pin provides a power good
signal to indicate output voltage is within ±10% of the
target level.
These devices offer a full suite of protection features to
ensure safe operation of the IC during fault conditions.
These include UVLO, hiccup current limit short circuit
protection and thermal shutdown.
These devices are available in a 36-pin 5 mm x 6 mm,
Wettable Flank VQFN with a junction operating range
from -40°C to +125°C.
36V, 6A High Performance Switching Buck Regulators
MIC24066/7
DS20006730A-page 2

2022 Microchip Technology Inc. and its subsidiaries
Package Type
*Includes Exposed Thermal Pads (AGND, VIN & SW); see Table 3-1.
MIC24066/7
36-Pin 5 mm x 6 mm VQFN*
PVDD
AGND
EXTVDD
EN
FREQ
SS/MODE
FB
AGND
VDD
SVIN
PG
ILIM
BST
SW
VIN
VIN
VIN
VIN
VIN
SW
PGND
PGND
SW
SW
SW
NC
SW
VIN
AGND
NC
AGND
11 12 13
10
14 16 17 1815
19
9
8
7
6
5
4
3
36 35 34 33 31 30 2932
20
21
22
23
24
25
26
NC
NC
NC
2
1
27
28
VIN
VIN
PGND
PGND
AGND
PVDD
AGND
EXTVDD
EN
FREQ
SS/MODE
FB
AGND
VDD
SVIN
PG
ILIM
BST
SW
VIN
VIN
VIN
VIN
VIN
SW
PGND
PGND
SW
SW
SW
NC
SW
VIN
AGND
NC
AGND
11 12 13
10
14 16 17 1815
19
9
8
7
6
5
4
3
36 35 34 33 31 30 2932
20
21
22
23
24
25
26
NC
NC
NC
2
1
27
28
VIN
VIN
PGND
PGND
AGND

2022 Microchip Technology Inc. and its subsidiaries DS20006730A-page 3
MIC24066/7
Typical Application Circuit
PGND
PVDD
VDD
PG
EN
SS/MODE
FREQ
EXTVDD
FB
ILIM
SW
BST
VIN VIN
6V to 36V
VOUT
5V@6A
VOUT
VIN
4.7uF
C1
3 x 4.7uF
C7
5x47uF
L1
3.3uH
C4
0.1uF
C6
47nF
C9
1.0nF
C11
1uF
C5
2.2uF
C3
R1
10Ñ‘
R2
43KÑ‘
R3
15KÑ‘
R4
2.05KÑ‘
R5
100KÑ‘
R6
100KÑ‘
R7
1K
VIN
MIC24066/7
PGNDGND
5V,6A ApplicaÆŸon Circuit (Fsw=400KHz)
SVIN 0 Ñ‘
C10
0.1uF
VIN
R8
VDD
VDD
CSS (MIC24066)
47uF
C2
C8
47uF
+
-
+
-

Product specificaties

Merk: Microchip
Categorie: Niet gecategoriseerd
Model: MIC24066

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