MP5515
Wide Input 2.7 - 18V, 5A, High-Efficiency
Bidirectional, Power Back-Up Manager
with Integrated Hot-Swap, I2C, ADC,
and Cap Health Test
DESCRIPTION
FEATURES
The MP5515 is an input power conditioning
PMIC targeting enterprise solid-state drives,
NVDIMM, and other applications with back-up
system requirements. The MP5515 consists of
input current limiting, input reverse current
blocking, and an MPS-patented, high-efficiency,
bidirectional, boost-buck converter with only
one inductor for energy storage and system
back-up power when there is an input power
failure. The MP5515 also provides I2C interface
and ADC. By using the I2C, users can set the
input current limit, slew rate, and perform cap
health tests. The MP5515 can also monitor
system status, such as input voltage, input
current, storage voltage, temperature, and
provide interrupt options for these features.
Wide 2.7V-to-18V Operating Input Range
Up to 32V Programmable Storage Voltage
Up to 6A Programmable Input Current Limit
5A Buck Load Capability
Adjustable Slew Rate for VB Voltage Rising
Input Current Limiter with Integrated 14mΩ
MOSFET
Input Over-Voltage Protection (OVP)
Reverse-Current Protection (RCP)
Input Power Failure Indicator
Backup Capacitor Health Test
Comprehensive Voltage, Current,
Temperature Sensor ADC Conversion
Thermal Protection
Available in a QFN-30 (5mmx5mm)
Package
The internal input current-limit block prevents
inrush current during system start-up while the
reverse-current block prevents backup energy
from flowing to the failing VIN port. MPS’s
APPLICATIONS
Solid-State Drives (SSD)
NVDIMMs
Hard-Disk Drives
patented
energy
storage
and
release
management control circuit minimizes the
storage capacitor requirement. It pumps the
input voltage to a higher backup voltage and
releases the energy over a hold-up time to the
system bus voltage in case of an input outage.
Power Back-Up Systems
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.
The MP5515 requires a minimal number of
standard, external components and is available
in a 30-pin QFN (5mmx5mm) package.
TYPICAL APPLICATION
VB
To DCDC
VSTRG Release
VIN = 12V, VB = 7.5V, VB load = 5A
C6
10nF
C2
22µF
R3
105kΩ
C5
1µF
BST
SW
VB
FBB
CST
CH1: VB
5V/div.
CH2: VSTRG
10V/div.
CH3: VPFI
5V/div.
R4
12.4k
10µH
L1
Ω
12V
C1
VIN
VBO
RTEST
STRG
VIN
R8
5.1kΩ
R1
STRG
30V
DET
100kΩ
0.1µF
D1
MP5515
R5
365kΩ
EN
SAS
TVS
optional
for spike
R2
C4
1000µF
11kΩ
R9
FBS
SDA
200kΩ
R6
10kΩ
OVP
R10
SCL
PGS
PGB
PFI
TPOR
DVDT
ICH
CH4: IL
5A/div.
11kΩ
TEMP
INT
VCC
ILIM AGND
PGND
C3
1µF
R7
12kΩ
5ms/div.
MP5515 Rev. 1.02
1/18/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
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