TS51111 Datasheet, PDF (1/22 Pages) List of Unclassifed Manufacturers – High Efficiency Synchronous Rectifier and Charging IC for Wireless Power Applications

TS51111
Version 2.1
High Efficiency Synchronous Rectifier and Charging IC for
Wireless Power Applications
FEATURES
 High efficiency synchronous rectification of AC input
 Supports both Direct and Indirect Charging
applications
 Supports WPC Qi® compliant and non-compliant
systems
 Low Rds-on rectifier switches
 High voltage input for higher power systems
 Up to 20W+ Output
 >98% efficiency at high currents
 Integrated switches for load modulation
 Integrated switch for battery disconnect
 Integrated precharge current source
 50mA output low Iq LDO
 Analog mux for ADC sensing
 Supply Under Voltage Lockout
 Low external component count
 Ultra-low standby quiescent current
 Junction operating temperature -40C to 125C
APPLICATIONS
 Cell Phones and Smart Phones
 Tablet Computers
 eReaders
 Laptop Computers
 Small Digital Cameras
 Portable Video Recorders
 Wireless charging for portable devices
DESCRIPTION
The TS51111 is a fully-integrated synchronous
rectifier for wireless charging applications with
additional integrated components to minimize
system BOM.
The TS51111 includes a high efficiency synchronous
rectifier to convert the input AC power signal to a DC
output level for battery charging. The device
supports both direct battery charging and indirect
power applications. Low Rds-on switches minimize
power dissipation. High voltage input capability
allows for simple and robust secondary side charger
implementation. An integrated switch provides the
battery charging path and combined with the
rectifier provides back feed protection to the AC
inputs. A precharge current source is also included
for low battery voltage precharge operation.
Communication capability is achieved using
integrated high voltage switches.
The TS51111 includes several additional modules to
allow simple integration into wireless power
systems. Integrated resistor dividers with zero-
current off-mode allow external ADC measurement
of PDC, PACKP, USB and thermistor voltages. High
voltage switches are included for communication
modulation.
Power to an external controller is provided through
an integrated LDO. The ultra-low quiescent current
regulator can supply high output currents at low
dropout with minimal current draw from the battery.
Available in a 45 pin WCSP and 36 pin 6x6 QFN
package.
Specifications subject to change
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