TS51111
Final Datasheet Rev 2.2
April 17, 2015
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Semtech
Proprietary & Condential
TS51111
TRIUNE PRODUCTS
High Eciency Synchronous Rectier and
Charging IC for Wireless Power Applications
Features
• High eciency synchronous rectication of AC input
• Supports both Direct and Indirect Charging applications
• Supports WPC Qi® compliant and non-compliant systems
• Low Rds-on rectier switches
• High voltage input for higher power systems
• Up to 20W+ Output
• >98% eciency 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 rectier for wireless
charging applications with additional integrated components to
minimize system BOM.
The TS51111 includes a high eciency synchronous rectier 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 rectier
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 o-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.
