BQ500101DPCT

Product Folder Sample & Buy Support & Community Tools & Software Technical Documents bq500101 SLPS585 – MARCH 2016 bq500101 NexFET™ Power Stage 1 Features 2 Applications • • • • • • • • • • • • • • 98% System Efficiency at 5 A Max Rated Continuous Current 10 A, Peak 15 A High-Frequency Operation (up to 600 kHz) High-Density SON 3.5 × 4.5 mm Footprint Ultra-Low Inductance Package System Optimized PCB Footprint 3.3-V and 5-V PWM Signal Compatible Input Voltages up to 24 V Integrated Bootstrap Diode Shoot-Through Protection RoHS Compliant – Lead Free Terminal Plating Halogen Free Optimized Power Stage Containing HighEfficiency Gate Drivers and FETs Optimized for 15-W Wireless Power Transmitter Designs 1 • • • • WPC (Qi) 1.2 Compliant Wireless Power Transmitters for 15-W or 5-W Systems Proprietary Wireless Chargers and Transmitters Wirelessly Powered Industrial and Medical Systems For more information, see www.ti.com/wirelesspower 3 Description The bq500101 NexFET™ Power Stage is optimized for wireless power applications covering the WPC v1.2 medium power specification. The device can be used for both the rail voltage control in fixed frequency transmitter types as well as the coil drivers for both fixed and variable frequency types. This combination produces a high-current, high-efficiency, and high-speed switching device in a small 3.5 × 4.5 mm outline package. In addition, the PCB footprint is optimized to help reduce design time and simplify the completion of the overall system design. Device Information(1) ORDER NUMBER PACKAGE BODY SIZE (NOM) bq500101 DPC (9) 3.5 mm x 4.5 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. bq500101 (Voltage Regulation) bq500100 (Current Sense Monitor) Efficiency (%) 19 V bq501210 (Wireless Power Transmitter Controller) bq500101 bq500101 Typical Power Stage Efficiency and Power Loss 100 3.2 95 2.8 90 2.4 VDD = 5 V 85 VIN = 10 V LSW = 6 PH 80 fSW = 130 kHz TA = 25qC 75 Duty Cycle = 50% 2 1.6 1.2 70 0.8 65 0.4 Efficiency (%) Power Loss (W) 0 8 10 60 0 2 4 6 VSW Current (A) Power Loss (W) spacer Application Diagram D001 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. bq500101 SLPS585 – MARCH 2016 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 4 6.1 6.2 6.3 6.4 6.5 4 4 4 4 5 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... 8.1 Application Information.............................................. 8 8.2 Typical Application ................................................... 8 8.3 System Example ..................................................... 11 9 9.1 Layout Guidelines ................................................... 13 9.2 Layout Example ...................................................... 13 9.3 Thermal Considerations .......................................... 14 10 Device and Documentation Support ................. 15 10.1 Trademarks ........................................................... 15 10.2 Electrostatic Discharge Caution ............................ 15 10.3 Glossary ................................................................ 15 11 Mechanical, Packaging, and Orderable Information ........................................................... 16 Detailed Description .............................................. 6 7.1 Overview ................................................................... 6 7.2 Functional Block Diagram ......................................... 6 7.3 Feature Description................................................... 7 8 Layout ................................................................... 13 11.1 Mechanical Drawing.............................................. 16 11.2 Recommended PCB Land Pattern........................ 17 11.3 Recommended Stencil Opening ........................... 17 Application and Implementation .......................... 8 4 Revision History 2 DATE REVISION NOTES March 2016 * Initial release. Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated bq500101 www.ti.com SLPS585 – MARCH 2016 5 Pin Configuration and Functions SON 3.5 × 4.5 mm (Top View) Pin Functions PIN NO. DESCRIPTION NAME 1 VDD Supply voltage to gate drivers and internal circuitry. 2 VDD Supply voltage to gate drivers and internal circuitry. 3 PGND Power ground, needs to be connected to Pin 9 and PCB 4 VSW Voltage switching node – pin connection to the inductor. 5 VIN Input voltage pin. Connect input capacitors close to this pin. 6 BOOT_R 7 BOOT Bootstrap capacitor CBOOT connections. Connect a minimum 0.1 µF 16 V X5R, ceramic cap CBOOT from BOOT to BOOT_R pins. The bootstrap capacitor provides the charge to turn on the Control FET. The bootstrap diode is integrated. Boot_R is internally connected to VSW. 8 PWM Pulse Width modulated tri-state input from external controller. Logic Low sets Control FET gate low and Sync FET gate high. Logic High sets Control FET gate high and Sync FET gate Low. Open or High Z sets both MOSFET gates low if greater than the tri-state shutdown hold-off time (t3HT) 9 PGND Power ground Copyright © 2016, Texas Instruments Incorporated Submit Documentation Feedback 3 bq500101 SLPS585 – MARCH 2016 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings (1) TA = 25°C (unless otherwise noted) MIN MAX UNIT VIN to PGND –0.3 30 V VSW to PGND , VIN to VSW –0.3 30 V –7 33 V VDD to PGND –0.3 6 V PWM –0.3 6 V BOOT to PGND –0.3 35 V –2 38 V –0.3 6 V VSW to PGND, VIN to VSW (