IC manufacturers Analog Devices

IC manufacturers (103)

Analog Devices LTC4125

5W AutoResonant Wireless Power Transmitter

Overview

TopologyWireless Power Transfer
Input voltage4.5-5.5 V
Switching frequency50-250 kHz

Description

Driving a 24μH Transmit Coil at 103kHz, with 1.3A Input Current Threshold, 119kHz FrequencyLimit and 41.5°C Transmit Coil Surface Temperature Limit in a Wireless Power System with LTC4120-4.2 as a400mA Single Cell Li-Ion Battery Charger at the Receiver

Features

Monolithic 5W Wireless Power TransmitterAutoResonantTM Switching Frequency Adjusts to Resonant Capacitance and Transmit Coil InductanceTransmit Power Automatically Adjusts to Receiver LoadInput Voltage Range: 3V to 5.5VIntegrated 100mΩ Full Bridge SwitchesMultiple Foreign Object Detection MethodsProgrammable Average Input Current Limit and MonitorNTC Input for System/Component Temperature Qualified Power TransferWide Operating Switching Frequency Range: 50kHz to 250kHzThermally Enhanced 4mm × 5mm QFN 20-Lead Package

Typical applications

  • Industrial Handhelds
  • Medical Equipment
  • Hermetically and/or Electrically Insulated Devices
  • Military Sensors and Devices

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Compliance
Size
L(µH)
IR(A)
RDC max.(mΩ)
fres(MHz)
Q(%)
P(W)
Samples
WE-WPCC Wireless Power Transfer Transmitter Coil, Qi - A10; MP-A1/A7, 53 x 53 x 6 mm
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
ComplianceQi - A10; MP-A1/A7 
Size53 x 53 x 6 mm 
Inductance24 µH
Rated Current6 A
DC Resistance100 mΩ
Self Resonant Frequency5 MHz
Q-Factor180 %
Power Capability [1]100 W
WE-WPCC Wireless Power Transfer Transmitter Coil, Qi - A10; MP-A1/A7, Ø 50 x 6 mm
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
ComplianceQi - A10; MP-A1/A7 
SizeØ 50 x 6 mm 
Inductance24 µH
Rated Current6 A
DC Resistance100 mΩ
Self Resonant Frequency5 MHz
Q-Factor180 %
Power Capability [1]100 W
WE-WPCC Wireless Power Transfer Transmitter Coil, Qi - A11; MP-A11, Ø 50 x 6 mm
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
ComplianceQi - A11; MP-A11 
SizeØ 50 x 6 mm 
Inductance6.3 µH
Rated Current6 A
DC Resistance51 mΩ
Self Resonant Frequency24 MHz
Q-Factor120 %
Power Capability [1]100 W
WE-WPCC Wireless Power Transfer Receiver Coil, works with Qi Rx IC's, Ø 26 x 1.3 mm
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Complianceworks with Qi Rx IC's 
SizeØ 26 x 1.3 mm 
Inductance47 µH
Rated Current1.5 A
DC Resistance500 mΩ
Self Resonant Frequency8 MHz
Q-Factor25 %
Power Capability [1]20 W