MP2918 Datasheet: Step-Down Converter





MP2918 Step-Down Converter Datasheet

Part Number MP2918
Description Step-Down Converter
Manufacture MPS
Total Page 30 Pages
PDF Download Download MP2918 Datasheet PDF

Features: MP2918 4V to 40V Input, Current Mode, Sy nchronous, Step-Down Controller DESCRI PTION The MP2918 is a high-voltage, syn chronous, step-down, switching controll er that can directly step down voltages from up to 40V. The MP2918 uses PWM cu rrent control architecture with accurat e cycle-by-cycle current limit and is c apable of driving dual N-channel MOSFET switches. Advanced Asynchronous Mode ( AAM) enables non-synchronous operation to optimize lightload efficiency. The o perating frequency of the MP2918 can be programmed by an external resistor or synchronized to an external clock for n oisesensitive applications. Full protec tion features include precision output over-voltage protection (OVP), output o ver-current protection (OCP), and therm al shutdown. The MP2918 is available in TSSOP20-EP and QFN-20 (3mmx4mm) packag es. APPLICATIONS  Automotive  Ind ustrial Control Systems FEATURES  W ide 4V to 40V Operating Input Range  Dual N-Channel MOSFET Driver  0.8V Voltage Reference with ±1.5% Accur.

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MP2918
4V to 40V Input, Current Mode,
Synchronous, Step-Down Controller
DESCRIPTION
The MP2918 is a high-voltage, synchronous,
step-down, switching controller that can directly
step down voltages from up to 40V. The
MP2918 uses PWM current control architecture
with accurate cycle-by-cycle current limit and is
capable of driving dual N-channel MOSFET
switches.
Advanced Asynchronous Mode (AAM) enables
non-synchronous operation to optimize light-
load efficiency.
The operating frequency of the MP2918 can be
programmed by an external resistor or
synchronized to an external clock for noise-
sensitive applications. Full protection features
include precision output over-voltage protection
(OVP), output over-current protection (OCP),
and thermal shutdown.
The MP2918 is available in TSSOP20-EP and
QFN-20 (3mmx4mm) packages.
APPLICATIONS
Automotive
Industrial Control Systems
FEATURES
Wide 4V to 40V Operating Input Range
Dual N-Channel MOSFET Driver
0.8V Voltage Reference with ±1.5%
Accuracy Over Temperature
Low Dropout Operation: Maximum Duty
Cycle at 99.5%
Programmable Frequency Range: 100kHz -
1000kHz
External Sync Clock Range: 100kHz-
1000kHz
180°Out-of-Phase SYNCO Pin
Programmable Soft Start (SS)
Power Good (PG) Output Voltage Monitor
Selectable Cycle-by-Cycle Current Limit
Output Over-Voltage Protection (OVP)
Hiccup Over-Current Protection (OCP)
Internal LDO with External Power Supply
Option
Programmable Forced CCM and AAM
Available TSSOP20-EP and QFN-20
(3mmx4mm) Packages
All MPS parts are lead-free, halogen-free, and adhere to the RoHS
directive. For MPS green status, please visit the MPS website under
Quality Assurance. “MPS” and “The Future of Analog IC Technology” are
registered trademarks of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
VCC1
VCC1
IN BST
FREQ
TG
VCC1
SW
PG SGND
MP2918 BG
VCC2
SENSE+
EN/SYNC
SENSE-
ILIM
FB
CCM/AAM
SYNCO
PGND COMP SS
4-40V
VIN
VOUT
MP2918 Rev. 1.02
www.MonolithicPower.com
5/31/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
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