BQ500101 Datasheet, PDF (1/20 Pages) Texas Instruments – NexFET Power Stage

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bq500101 NexFET™ Power Stage
bq500101
SLPS585 – MARCH 2016
1 Features
•1 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 High-
Efficiency Gate Drivers and FETs
• Optimized for 15-W Wireless Power Transmitter
Designs
2 Applications
• 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.
Application Diagram
19 V
bq500101
(Voltage Regulation)
bq500100
(Current Sense
Monitor)
bq501210
(Wireless Power
Transmitter Controller)
bq500101
bq500101
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.
spacer
Typical Power Stage Efficiency and Power Loss
100
3.2
95
2.8
90
2.4
V_DD = 5 V
85 _{VIN = 10 V}
2
L_SW = 6 PH
80 f_SW = 130 kHz
1.6
T_A = 25qC
75 Duty Cycle = 50%
1.2
70
0.8
65
Efficiency (%) 0.4
Power Loss (W)
60
0
0
2
4
6
8
10
V_SW Current (A)
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.