EV9928-F-00B
60V Current Mode, Synchronous
Step-Down Controller Evaluation Board
EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 1
11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
DESCRIPTION
The EV9928-F-00B Evaluation Board is
designed to demonstrate the capabilities of
MP9928. The MP9928 is a high-voltage,
synchronous step-down controller that directly
steps down voltages from up to 60V. The
MP9928 uses PWM current control architecture
with accurate cycle-by-cycle current limiting and
is capable of driving dual N-channel MOSFETs.
The operating frequency of the MP9928 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 MP9928 is available in TSSOP20-EP and
QFN-20 (3mmx4mm) packages. This board is
available in TSSOP20-EP package.
ELECTRICAL SPECIFICATION
FEATURES
6V to 60V Input Voltage for This 5V Output
Board
Dual N-Channel MOSFET Driver
Low Dropout Operation: Maximum Duty
Cycle at 99.5%
180º Out-of-Phase SYNCO Output
Programmable Soft Start
Output Power Good Indicator
Selectable Threshold for Cycle-by-Cycle
Current Limit
Programmable Frequency Range: 100kHz-
1000kHz
External Power Bias Option for Vcc Supply
Output Over-Voltage Protection (OVP)
Over-Current Protection (OCP)
TSSOP20-EP Package on This Board
APPLICATIONS
PD Power Supply in PoE System
USB Dedicated Charging Port (DCP)
Industrial Control Systems
Power Supply for Linear Chargers
All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For
MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
Note: (1) The IC can work to 4V input, but the output voltage will drop, it is limited
by the maximum duty cycle.
EV9928-F-00B EVALUATION BOARD
(L x W x H) 8.36cm x 8.36cm x 0.8cm
(Four Layers)
