88EM8010/88EM8011
Power Factor Correction Controller
Datasheet
PRODUCT OVERVIEW
The Marvell® 88EM8010/88EM8011 device is a high
performance Power Factor Correction (PFC) Controller for
boost applications. The device is used for universal PFC
front-end boost converters in system or standalone products.
General Features
Patented DSP control with adaptive loop coefficient
Continuous Conduction Mode (CCM) operation
Average current mode control
Both devices work at fixed frequencies. 88EM8010 at 60kHz
while 88EM8011 at 120kHz.
Adaptive control loop achieves high power factor for a
wide range of voltage and load conditions
Adaptive over current protection for universal voltage
Fixed frequency of operation
Marvell advanced mixed signal technology ensures low Total
Harmonic Distortion (THD). The IC operates under average
Continuous Conduction Mode (CCM).
High power factor and low harmonic distortion for a wide
range of load conditions
The 88EM8010/88EM8011 PFC controller improves the steady
state and transient performance through Marvell's innovative
Digital Signal Processing (DSP) solution. The proprietary
adaptive over-current protection has the ability to ensure almost
constant power constraint and provides safety provisions
including open loop and over voltage protection protocols.
Up to 2A driver capability
Minimal external components required
Under voltage lockout (UVLO)
Over voltage protection (OVP)
Thermal shutdown
The internal voltage loop compensation and current loop control
guarantees system stability and thus reduces the external
component count and costs.
Input line frequency range from 45Hz to 65Hz
Applications
Universal front-end PFC boost controller
AC/DC adaptors and battery chargers
Electronic Ballasts front-end with PFC
The 8-pin SOIC package further facilitates the application
design process, saving board space. The resultant simple
system design and minimum cost makes 88EM8010/88EM8011
the ideal choice for PFC controllers.
Figure 1: PFC Boost Circuit Diagram
L
DR2
VOut
Bridge
Retifier
PFC
iL
Rgate
CIN
Load
Q1
CO2
AC
IN
Rsen
Rcs
Ra
Rb
SGND
ISNS
SW
RS1
88EM8010/
8011
PGND
FB
VDD
VIN
VDD
Rc
CVDD
RS2
Copyright © 2009 Marvell
September 30, 2009, 2.00
Doc. No. MV-S104861-01 Rev. –
Page 3
Document Classification: Proprietary
MARVELL [ MARVELL TECHNOLOGY GROUP LTD. ]
