Microchip MIC2128 Manual

Microchip Ikke kategoriseret MIC2128

Læs gratis den danske manual til Microchip MIC2128 (36 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 14 personer og har en gennemsnitlig bedømmelse på 4.5 stjerner ud af 7.5 anmeldelser. Har du et spørgsmål om Microchip MIC2128, eller vil du spørge andre brugere om produktet?

Download PDF
Side 1/36
2016-2020 Microchip Technology Inc. DS20005620F-page 1
MIC2128
Features
• Hyper Speed Control® Architecture Enables:
- High Input to Output Voltage Conversion
Ratio Capability
- Any Capacitor™ Stable
- Ultra-Fast Load Transient Response
• Wide 4.5V to 75V Input Voltage Range
• Adjustable Output Voltage from 0.6V to 30V
• 270 kHz to 800 kHz Programmable Switching
Frequency
• Built-in 5V Regulator for Single-Supply Operation
• Auxiliary Bootstrap LDO for Improving System
Efficiency
• Internal Bootstrap Diode
• Adjustable Soft Start Time
• Enable Input and Power Good Output
• Programmable Current Limit
• Hiccup Mode Short-Circuit Protection
• Internal Compensation and Thermal Shutdown
• Supports Safe Start-Up into a Prebiased Output
• AEC-Q100 Qualified (VAO suffix)
Applications
• Networking/Telecom Equipment
• Base Station, Servers
• Distributed Power Systems
• Industrial Power Supplies
• Automotive Power Supplies
General Description
The MIC2128 is a constant-frequency synchronous
buck controller featuring a unique adaptive on-time
control architecture with external soft start. The
MIC2128 operates over an input voltage range from
4.5V to 75V.The output voltage is adjustable down to
0.6V with a guaranteed accuracy of ±1%. The device
operates with programmable switching frequency from
270 kHz to 800 kHz.
The MIC2128 features an external soft start pin (SS)
which allows the user to adjust output soft start time to
reduce inrush current from mains during start-up. The
MIC2128 features an auxiliary bootstrap LDO which
improves the system efficiency by supplying the
MIC2128 internal circuit bias power and gate drivers
from output of the converter. A logic level enable (EN)
signal can be used to enable or disable the controller.
The MIC2128 can start-up monotonically into a
prebiased output. The MIC2128 features an open drain
power good signal (PG) which signals when the output
is in regulation and can be used for simple power
supply sequencing purpose.
The MIC2128 offers a full suite of protection features to
ensure protection of the IC during Fault conditions.
These include undervoltage lockout to ensure proper
operation under power-sag conditions, “hiccup” mode
short-circuit protection and thermal shutdown.
The MIC2128 is available in a 16-pin 3 mm x 3 mm
VQFN package, with an operating junction temperature
range from -40°C to +125°C.
Typical Application Circuit
PVDD
VDD
PG
EN
SS
FREQ EXTVDD
FB
ILIM
SW
BST
VIN VIN
4.5V to 75V
VOUT
5V@5A
VOUT
VIN
4.7 µF
2.2 µFX3
47 µF
10 µH
0.1 µF
0.1 µF
4.7 nF
1 µF
4.7 µF
2.2ё
18 kё
7.5 kё
1 kё
100 kё
60 kё
1.5 kё
VIN
MIC2128
PGND
AGND
DH
DL
10 nF
330 µF
+
0.1 µF
Q1
Q2
L1
C1
Q1,Q2:SiR878ADP
L1: SRP1265A-100M, Bourns
C1: 10SVP330M
75V, Synchronous Buck Controller Featuring Adaptive
On-Time Control with External Soft Start
MIC2128
DS20005620F-page 2 2016-2020 Microchip Technology Inc.
Package Type
Functional Block Diagram
2
SW
BST
PG SS
FREQ
DH
EN
PGND
DL
PVDD
EXTVDD
VIN
VDD
AGND
FB
ILIM
16
1
15 14 13
3
4
11
10
9
5 6 7 8
12
MIC2128
3 x 3 VQFN* (Top View)
EP
* Includes Exposed Thermal Pad (EP); see Table 3-1.
SW
PG
VDD
BST
PVDD
FREQ
PVDD VIN
PGND
ILIM
Negative Current
Limit
815
THERMAL
SHUTDOWN
11 T
ON
ESTIMATION
Control
Logic
14
1
AGND
EN
10
2
9
EXTVDD
LINEAR
REGULATOR
g
m
13
FB
COMPENSATION
VREF
FB
5
DH
7
DL
12
SS
3
4
16
CURRENT LIMIT
DETECTION
0.9
µA
UVLO
LINEAR
REGULATOR
0.6V
V
REF
1.3 µA
6

Produkt Specifikationer

Mærke: Microchip
Kategori: Ikke kategoriseret
Model: MIC2128

Har du brug for hjælp?

Hvis du har brug for hjælp til Microchip MIC2128 stil et spørgsmål nedenfor, og andre brugere vil svare dig


Ikke kategoriseret Microchip Manualer

Microchip

Microchip AT7913 Manual

1 September 2025
Microchip

Microchip ATmega1281 Manual

19 Juli 2025
Microchip

Microchip ATtiny461 Manual

19 Juli 2025
Microchip

Microchip ATxmega128D3 Manual

19 Juli 2025
Microchip

Microchip ATxmega128D4 Manual

19 Juli 2025
Microchip

Microchip ATTINY28 Manual

19 Juli 2025
Microchip

Microchip ATTINY861 Manual

19 Juli 2025
Microchip

Microchip ATmega1280 Manual

19 Juli 2025
Microchip

Microchip ATtiny84A Manual

19 Juli 2025
Microchip

Microchip ATmega645P Manual

19 Juli 2025

Ikke kategoriseret Manualer

Nyeste Ikke kategoriseret Manualer

Elektrobock

Elektrobock PT44 Manual

14 September 2025
BSS Audio

BSS Audio FDS-366T Manual

14 September 2025
Systemair

Systemair Airline R-114 Manual

14 September 2025
IFM

IFM SU2031 Manual

14 September 2025
Morel

Morel Tempo Ultra Integra 502 Manual

14 September 2025
IMC Networks

IMC Networks 232CL9R Manual

14 September 2025
Varta

Varta Speed Charger 57955 Manual

14 September 2025
Melissa & Doug

Melissa & Doug 9336 Manual

14 September 2025
Opus

Opus dataPREDATOR Manual

13 September 2025
Varta

Varta Wireless Power Bank 20000 57909 Manual

13 September 2025