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MPQ8645PGVT Datasheet Preview

MPQ8645PGVT Datasheet

Step-Down Converter

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MPQ8645P
16V, 30A, Scalable, Digital, Synchronous
Step-Down Converter with PMBus
DESCRIPTION
The MPQ8645P is a fully integrated, PMBus-
compatible, high-frequency, synchronous buck
converter. The MPQ8645P offers a very
compact solution that achieves up to 30A of
output current per phase, with excellent load
and line regulation over a wide input supply
range. The MPQ8645P operates at high
efficiency over a wide output current load range.
The PMBus interface provides converter
configurations and key parameter monitoring.
The MPQ8645P adopts MPS’s proprietary
multi-phase constant-on-time (MCOT) control,
which provides fast transient response and
eases loop stabilization. The MCOT scheme
also allows multiple MPQ8645P devices to be
connected in parallel with excellent current
sharing and phase interleaving for high-current
applications.
Fully integrated protection features include
over-current protection (OCP), over-voltage
protection (OVP), under-voltage protection
(UVP), and over-temperature protection (OTP).
The MPQ8645P requires a minimal number of
readily available, standard external components,
and is available in a TQFN-25 (4mmx5mm)
package.
FEATURES
PMBus 1.3 Compliant
Scalable Multi-Phase Operation
3.1V to 16V with External 3.3V VCC Bias
4V to 16V with Internal Bias or External
3.3V VCC Bias
30A Continuous Output Current per Phase
Low RDS(ON) Integrated Power MOSFETs
Lossless and Accurate On-Die Current
Sensing
Adaptive COT for Ultrafast Transient
Response
Stable with Zero-ESR Output Capacitors
0.5% Reference Voltage Over 0°C to 70°C
Junction Temperature Range
Output Voltage True Remote Sense
Output Adjustable from 0.4V to 0.9 x VIN Up
to 5.5V Max
Output Voltage/Current, Input Voltage, and
Junction Temperature Reporting
Built-In MTP to Store Custom
Configurations
Programmable via PMBus
o Output Voltage
o Output Current Limit
o Selection of Pulse-Skip or Forced-CCM
Operation
o Soft-Start Time
o Selection of Switching Frequency from
400kHz, 600kHz, 800kHz, or 1000kHz
o Selection of Hiccup or Latch-Off for
OCP, OVP, and OTP
o Ramp Compensation
Available in a TQFN-25 (4mmx5mm)
Package
APPLICATIONS
Telecom and Networking Systems
Base Stations
Servers
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For
MPS green status, visit the MPS website under Quality Assurance. “MPS”, the
MPS logo, and “Simple, Easy Solutions” are trademarks of Monolithic Power
Systems, Inc. or its subsidiaries.
MPQ8645P Rev. 1.2
www.MonolithicPower.com
1
4/17/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.




MPS

MPQ8645PGVT Datasheet Preview

MPQ8645PGVT Datasheet

Step-Down Converter

No Preview Available !

MPQ8645P – 16V, 30A, SYNC STEP-DOWN CONVERTER WITH PMBUS
TYPICAL APPLICATION CIRCUITS
Single-Phase Operation
VIN
EN
PGOOD
R1
IN
CBST
L1
BST SW
CIN
CTRL
MPQ8645P
VOSNS+
CVCC
R2
CCDRV
ALT#
SCL
SDA
RADDR
RREF
VOUT
COUT
Two-Phase Operation
VIN
EN
PGOOD
R1
CVCC
CBST
IN
CIN
BST SW
MPQ8645P
CTRL
VOSNS+
L1
RADDR
RREF
VOUT
COUT
ALT#
SCL
SDA
PS#
CBST1
L2
IN
BST SW
CIN1
MPQ8645P
CTRL
VOSNS+
CVCC1
RREF1
RADDR1
MPQ8645P Rev. 1.2
www.MonolithicPower.com
2
4/17/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.


Part Number MPQ8645PGVT
Description Step-Down Converter
Maker MPS
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