Stand-Alone Automotive USB Supply with Data-Line Protection
Preliminary Information - Jan 26, 2016
E522.43
Features
Input voltage range from 6V to 32V (tran. 42V)
Fixed frequency Step-Down converter with selectable
center frequency 250kHz, 500kHz or 2MHz
Advanced PWM voltage regulation loop with 100% duty
cycle capability
Fixed 5V±3% USB BUS voltage, with seven programmable
negative resistance adjustments
Programmable USB corresponding output currents of
0.6/1.8A/2.5A/3.5A with fixed limits or regulation
+/-25% synchronizable to center frequency via PLL
Exclusively pin-configurable
USB 2.0 high speed compatible data line switches with
protection function
Wake-on USB functionality
Adjustable coding network for SDP or BC1.2 CDP
downstream loads and DCP or individual USB chargers
Short to GND and VBAT protection for BUS and data lines,
overvoltage and temperature protection
Full automotive qualification AEC-Q100
General Description
The E522.43 is a USB 2.0 compatible Stand-Alone power sup-
ply with protection features for the automotive environment.
Protection includes ISO7637 pulses on the input, as well as
short to battery/ground on the USB bus and data lines.
The system setup and device configuration is done via hard
wired resistor divider to the VDD line with parity check for
coding safety.
An internal DC-DC converter provides efficient USB 5V sup-
ply from either vehicle battery or a lower voltage bus rail. Se-
lectable soft power-up sequence protects the external parts
from overload and reduces inrush currents. It is possible to
program a current dependent output voltage gain up to
-400mΩ for current induced wire losses along the USB cable.
The switching frequency can be synchronized in Master-Slave
configurations with other devices via PLL input. In addition
the switchable spread spectrum option reduces EMI.
The E522.43 supports USB charging downstream loads ac-
cording to the Battery Charging Specification Revision 1.2
and various other specific USB charger emulations.
Applications
Automotive Infotainment, Navigation and Radio Units.
USB Chargers
Ordering Information
Ordering-No.:
E52243B62C
E52243B62CXX1
1)
1) Wettable flanks
T
AMB
Range
-40°C to +105°C
-40°C to +105°C
Package
QFN20L5
QFN20L5
Typical Application Circuit
VBAT
SUP
SW1/2
C
CHDR
CHDR
LX1
LX2
CS
System activate input
Synchronizing frequency
EN
VDD
L
1
R
S
5.1V@2.5A
Interrupt request output
Device Configuration Pin 1
Device Configuration Pin 2
Device Configuration Pin 3
C
IN
C
VDD
INTB
CFG1
CFG2
CFG3
D+
D-
GND
C
CMP2
E522.43
BUS
CMP
PD+
PD-
D
1
Optional ESD
Clamp
C
BUS
USB2.0 Data comm. (+)
USB2.0 Data comm. (-)
R
CMP
C
CMP1
VBUS
D+
D-
GND
USB
Connector
GND
This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice.
Elmos Semiconductor AG
Info Sheet
QM-No.: 25IS0140E.00
ELMOS [ ELMOS SEMICONDUCTOR AG ]
