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 (<10 ns) BOOT to PGND (<10 ns) BOOT to BOOT_R BOOT to BOOT_R (duty cycle <0.2%) 8 V PD Power dissipation 8 W TJ Operating temperature –40 150 °C Tstg Storage temperature –55 150 °C (1) Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to Absolute Maximum rated conditions for extended periods may affect device reliability. 6.2 ESD Ratings VALUE V(ESD) (1) (2) Electrostatic discharge Human body model (HBM) (1) UNIT ±2000 Charged device model (CDM) (2) V ±500 JEDEC document JEP155 states that 500 V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250 V CDM allows safe manufacturing with a standard ESD control process. 6.3 Recommended Operating Conditions TA = 25° (unless otherwise noted) VDD Gate drive voltage MIN MAX 4.5 5.5 V 24 V 10 A 15 A 600 kHz (1) VIN Input supply voltage ISW Continuous VSW current ISW-PK Peak VSW current (3) ƒSW Switching frequency VIN = 10 V, VDD = 5 V, Duty cycle = 50%, ƒSW = 130 kHz, LSW = 6 µH (2) CBOOT = 0.1 µF (min) On time duty cycle (1) (2) (3) UNIT 85% Minimum PWM on time 40 Operating temperature –40 ns 125 °C Operating at high VIN can create excessive AC voltage overshoots on the switch node (VSW) during MOSFET switching transients. For reliable operation, the switch node (VSW) to ground voltage must remain at or below the Absolute Maximum Ratings. Measurement made with six 10 µF (TDK C3216X5R1C106KT or equivalent) ceramic capacitors placed across VIN to PGND pins. System conditions as defined in Note 2. Peak VSW Current is applied for tp = 10 ms, duty cycle ≤ 1% 6.4 Thermal Information TA = 25°C (unless otherwise noted) THERMAL METRIC RθJC Junction-to-case (top of package) thermal resistance (1) RθJB Junction-to-board thermal resistance (2) (1) (2) 4 MIN TYP MAX 22.8 2.5 UNIT °C/W RθJC is determined with the device mounted on a 1 inch² (6.45 cm²), 2 oz (0.071 mm thick) Cu pad on a 1.5 inch x 1.5 inch, 0.06 inch (1.52 mm) thick FR4 board. RθJB value based on hottest board temperature within 1mm of the package. Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated bq500101 www.ti.com SLPS585 – MARCH 2016 6.5 Electrical Characteristics TA = 25°C, VDD = POR to 5.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PLOSS Power loss (1) VIN = 10 V, VDD = 5 V, ISW = 5 A, ƒSW = 130 kHz, LSW = 6 µH , TJ = 25°C, Duty Cycle = 50% 0.53 W Power loss (1) VIN = 10 V, VDD = 5 V, ISW = 5 A, ƒSW = 130 kHz, LSW = 6 µH , TJ = 125°C, Duty Cycle = 50% 0.68 W VIN IQ VIN quiescent current PWM = Floating, VDD = 5 V, VIN= 24 V IDD Standby supply current PWM = Float IDD Operating supply current PWM = 50% Duty cycle, ƒSW = 130 kHz 1 µA VDD 130 µA 2 mA POWER-ON RESET AND UNDERVOLTAGE LOCKOUT VDD Rising Power-on reset VDD Falling UVLO 4.15 3.7 Hysteresis V V 0.2 V PWM I/O SPECIFICATIONS Pull up to VDD 1700 RI Input impedance VIH Logic level high VIL Logic level low VIH Hysteresis VTS Tri-state voltage tTHOLD(off1) Tri-state activation time (falling) PWM 60 tTHOLD(off2) Tri-state activation time (rising) PWM 60 t3RD(PWM) Tri-state exit time PWM Pull down (to GND) kΩ 800 2.65 0.6 0.2 1.3 V 2 ns (1) 100 ns 240 mV 2 µA BOOTSTRAP SWITCH VFBST Forward voltage IF = 10 mA IRLEAK Reverse leakage (1) VBOOT – VDD = 25 V (1) 120 Specified by design Copyright © 2016, Texas Instruments Incorporated Submit Documentation Feedback 5 bq500101 SLPS585 – MARCH 2016 www.ti.com 7 Detailed Description 7.1 Overview The bq500101 NexFET™ Power Stage is a highly optimized design for use in wireless power transmitter designs. The bq500101 can also be used for synchronous buck applications. 7.2 Functional Block Diagram VDD VUVLO DRVL DRVH Level Shift + + 7 BOOT 5 VIN Control FET 6 BOOT_R + + 1V 4 + + VDD VSW 1 / 2 VDD + 1V 1.7Meg PWM 3-State Logic 8 DRVL Sync FET 800k PGND 3 6 Submit Documentation Feedback 9 PGND Copyright © 2016, Texas Instruments Incorporated bq500101 www.ti.com SLPS585 – MARCH 2016 7.3 Feature Description 7.3.1 Powering bq500101 And Gate Drivers An external VDD voltage is required to supply the integrated gate driver device and provide the necessary gate drive power for the MOSFETS. A 1-µF 10-V X5R or higher ceramic capacitor is recommended to bypass VDD pin to PGND. A bootstrap circuit to provide gate drive power for the Control FET is also included. The bootstrap supply to drive the Control FET is generated by connecting a 100-nF 16-V X5R ceramic capacitor CBOOT between BOOT and BOOT_R pins. An optional RBOOT resistor in series with CBOOT can be used to slow down the turn on speed of the Control FET and reduce voltage spikes on the VSW node. A typical 1 Ω to 4.7 Ω value is a compromise between switching loss and VSW spike amplitude. 7.3.2 Undervoltage Lockout Protection (UVLO) The undervoltage lockout (UVLO) comparator evaluates the VDD voltage level. As VVDD rises, both the Control FET and Sync FET gates hold actively low at all times until VVDD reaches the higher UVLO threshold (VUVLO_H)., Then the driver becomes operational and responds to PWM command. If VDD falls below the lower UVLO threshold (VUVLO_L = VUVLO_H – Hysteresis), the device disables the driver and drives the outputs of the Control FET and Sync FET gates actively low. Figure 1 shows this function. VUVLO_H VUVLO_L VVDD Driver On UDG-12218 Figure 1. UVLO Operation 7.3.3 Integrated Boost-Switch To maintain a BOOT-VSW voltage close to VDD (to get lower conduction losses on the high-side FET), the conventional diode between the VDD pin and the BOOT pin is replaced by a FET which is gated by the DRVL signal. Copyright © 2016, Texas Instruments Incorporated Submit Documentation Feedback 7 bq500101 SLPS585 – MARCH 2016 www.ti.com 8 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 8.1 Application Information The Power Stage bq500101 is a highly optimized design for wireless power transmitter applications using NexFET devices with a 5-V gate drive. The Control FET and Sync FET silicon are parametrically tuned to yield the lowest power loss and highest system efficiency. As a result, a rating method is used that is tailored towards a more systems centric environment. The high-performance gate driver device integrated in the package helps minimize the parasitics and results in extremely fast switching of the power MOSFETs. System level performance curves such as Power Loss, Safe Operating Area and normalized graphs allow engineers to predict the product performance in the actual application. 8.2 Typical Application V_SENSE +19V L1 4 C1 C2 1 2 VIN VSW VDD BOOT VDD BOOT_R C3 +5V PGND 8 PWM PAD R7 5 R6 7 R8 R1 C6 6 C5 C4 3 R2 4 R4 9 1 R3 bq500101 2 R5 IN+ IN- GND V+ GND OUT 5 3 C7 6 bq500100 I_SENSE R9 +3.3V C8 V33 C9 PWM_RAIL C10 RAIL+ L1 4 RAIL1 DPWM-A DPWM-A V_SENSE DPWM-B DPWM-B I_SENSE V_SENSE +5V I_SENSE 2 VIN VSW VDD BOOT VDD BOOT_R C11 PGND AGND / DGND 8 bq501210 PWM PAD 5 C15 C12 7 7 C14 6 3 9 bq500101 DPWM-A 5 C13 6 3 9 VSW VIN BOOT VDD BOOT_R VDD 4 +5V 1 2 C16 PGND PAD PWM 8 bq500101 DPWM-B Figure 2. Application Schematic 8 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated bq500101 www.ti.com SLPS585 – MARCH 2016 Typical Application (continued) 8.2.1 Application Curves 3 1.1 2.5 1 Power Loss, Normalized 2 1.5 1 0.5 0 2.5 4 VIN = 10 V ƒSW = 130 kHz 5.5 7 Output Current (A) VDD = 5 V LSW = 6 µH 8.5 0.8 0.7 0.6 Typ Max 1 0.9 0.5 -50 10 -25 VIN = 10 V ƒSW = 130 kHz Duty Cycle = 50% Figure 3. Power Loss vs Output Current 10 Output Current (A) 10 Output Current (A) 12 8 6 4 D003 Duty Cycle = 50% 6 4 400 LFM 200 LFM 100 LFM Nat. conv. 2 Min Typ 0 0 10 VIN = 10 V ƒSW = 130 kHz 20 30 40 50 60 Ambient Temperature (qC) VDD = 5 V LSW = 6 µH 70 80 90 0 20 40 60 80 100 Board Temperature (qC) D004 VIN = 10 V ƒSW = 130 kHz Duty Cycle = 50% Figure 5. Safe Operating Area – PCB Horizontal Mount (1) VDD = 5 V LSW = 6 µH 120 140 D006 Duty Cycle = 50% Figure 6. Typical Safe Operating Area 1.2 1.15 1.2 1.12 0.9 1.1 0.8 1.09 0.7 1.05 0.4 1.06 0.5 1 0.0 1.03 0.2 1 0.0 0.97 40 130 VIN = 10 V ISW = 5 A 220 310 400 490 Switching Frequency (kHz) VDD = 5 V LSW = 6 µH 580 -0.2 670 Power Loss, Normalized 1.15 SOA Temperature Adj. (qC) Power Loss, Normalized 150 8 0 0.95 -0.4 0.9 -0.8 0.85 0 2 4 D007 Duty Cycle = 50% Figure 7. Normalized Power Loss vs Frequency (1) VDD = 5 V LSW = 6 µH 125 Figure 4. Power Loss vs Temperature 12 2 0 25 50 75 100 TC - Junction Temperature (qC) D002 ISW = 5 A ƒSW = 130 kHz 6 8 10 12 Input Voltage (V) VDD = 5 V LSW = 6 µH 14 16 SOA Temperature Adj. (qC) Power Loss (W) TJ = 125°C, unless stated otherwise -1.2 18 D008 Duty Cycle = 50% Figure 8. Normalized Power Loss vs Input Voltage LFM: Linear Feet per Minute (Air Flow Velocity) Copyright © 2016, Texas Instruments Incorporated Submit Documentation Feedback 9 bq500101 SLPS585 – MARCH 2016 www.ti.com Typical Application (continued) 1.15 1.2 1.1 0.8 1.05 0.4 1 0.0 0.95 4 VIN = 10 V ƒSW = 130 kHz 5 6 7 8 Output Inductance (PH) VDD = 5 V Duty Cycle = 50% 9 SOA Temperature Adj. (qC) Power Loss, Normalized TJ = 125°C, unless stated otherwise -0.4 10 D010 ISW = 5 A Figure 9. Normalized Power Loss vs Output Inductance 1. The Typical bq500101 System Characteristic curves are based on measurements made on a PCB design with dimensions of 4.0 inches (W) × 3.5 inches (L) × 0.062 inch (T) and 6 copper layers of 1-oz. copper thickness. See the System Example section for detailed explanation. 10 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated bq500101 www.ti.com SLPS585 – MARCH 2016 TJ = 125°C, unless stated otherwise 8.3 System Example 8.3.1 Power Loss Curves MOSFET centric parameters such as ON-resistance and gate charges are primarily needed by engineers to estimate the loss generated by the devices. In an effort to simplify the design process for engineers, Texas Instruments has provided measured power loss performance curves. Figure 3 plots the power loss of the bq500101 as a function of load current. This curve is measured by configuring and running the bq500101 as the circuit shown in Figure 10. The measured power loss is the bq500101 device power loss which consists of both input conversion loss and gate drive loss. Equation 1 is used to generate the power loss curve. Power Loss = (VIN x IIN) + (VDD x IDD) – (VSW_AVG x IOUT) (1) The power loss curve in Figure 3 is measured at the maximum recommended junction temperature of TJ = 125°C under isothermal test conditions. bq500101 Vin VDD Gate Drive Voltage (VDD) A VIN VDD A Input Current (IIN) Boot Gate Drive Current (IDD) BST HSgate V DRVH CBoot Control FET Cin V Input Voltage (VIN) Boot_R LL PWM Vsw LSgate PWM DRVL VSW Sync FET LO VO A Co Output Current (IOUT) GND PGND Averaging Circuit V Averaged Switched Node Voltage (VSW_AVG) Figure 10. Power Loss Test Circuit 8.3.2 Safe Operating Area (SOA) Curves The SOA curves in the bq500101 datasheet give engineers guidance on the temperature boundaries within an operating system by incorporating the thermal resistance and system power loss. Figure 5 and Figure 6 outline the temperature and airflow conditions required for a given load current. The area under the curve dictates the safe operating area. All the curves are based on measurements made on a PCB design with dimensions of 4.0" (W) x 3.5" (L) x 0.062" (T) and 6 copper layers of 1-oz. copper thickness. 8.3.3 Normalized Curves The normalized curves in the bq500101 data sheet give engineers guidance on the Power Loss and SOA adjustments based on their application specific needs. These curves show how the power loss and SOA boundaries will adjust for a given set of systems conditions. The primary Y-axis is the normalized change in power loss and the secondary Y-axis is the change is system temperature required in order to comply with the SOA curve. The change in power loss is a multiplier for the Power Loss curve and the change in temperature is subtracted from the SOA curve. Copyright © 2016, Texas Instruments Incorporated Submit Documentation Feedback 11 bq500101 SLPS585 – MARCH 2016 www.ti.com System Example (continued) 8.3.3.1 Calculating Power Loss and SOA The user can estimate product loss and SOA boundaries by arithmetic means (see the Design Example below). Though the Power Loss and SOA curves in this datasheet are taken for a specific set of test conditions, the following procedure will outline the steps engineers should take to predict product performance for any set of system conditions. 8.3.3.1.1 Design Example Operating Conditions: Output Current (lSW) = 9 A, Input Voltage (VIN ) = 8 V, Switching Frequency (ƒSW) = 300 kHz, Output Inductor (LSW) = 5 µH, Duty Cycle = 50%. 8.3.3.1.2 Calculating Power Loss • • • • • Typical Power Loss at 9 A = 1.78 W (Figure 3) Normalized Power Loss for switching frequency ≈ 1.03 (Figure 7) Normalized Power Loss for input voltage ≈ 0.96 (Figure 8) Normalized Power Loss for output inductor ≈ 1.075 (Figure 9) Final calculated Power Loss = 1.78 W × 1.03 × 0.96 × 1.075 ≈ 1.89 W 8.3.3.1.3 Calculating SOA Adjustments • • • • SOA adjustment for switching frequency ≈ 0.20°C (Figure 7) SOA adjustment for input voltage ≈ –0.30°C (Figure 8) SOA adjustment for output inductor ≈ 0.60°C (Figure 9) Final calculated SOA adjustment = 0.2 + (–0.3) + 0.6 ≈ 0.5°C Figure 11. Power Stage bq500101 SOA, TA = 25°C In the design example above, the estimated power loss of the bq500101 would increase to 1.89 W. In addition, the maximum allowable board and/or ambient temperature would have to decrease by 0.5°C. Figure 11 graphically shows how the SOA curve would be adjusted accordingly. 1. Start by drawing a horizontal line from the application current to the SOA curve. 2. Draw a vertical line from the SOA curve intercept down to the board/ambient temperature. 3. Adjust the SOA board/ambient temperature by subtracting the temperature adjustment value. In the design example, the SOA temperature adjustment yields a reduction in allowable board/ambient temperature of 0.5°C. In the event the adjustment value is a negative number, subtracting the negative number would yield an increase in allowable board/ambient temperature. 12 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated bq500101 www.ti.com SLPS585 – MARCH 2016 9 Layout 9.1 Layout Guidelines 9.1.1 Recommended PCB Design Overview There are two key system-level parameters that can be addressed with a proper PCB design: electrical and thermal performance. Properly optimizing the PCB layout will yield maximum performance in both areas. Below is a brief description on how to address each parameter. 9.1.2 Electrical Performance The bq500101 has the ability to switch at voltage rates greater than 10 kV/µs. Special care must be then taken with the PCB layout design and placement of the input capacitors, inductor and switch capacitors (SW capacitors). • The placement of the input capacitors relative to VIN and PGND pins of bq500101 device should have the highest priority during the component placement routine. It is critical to minimize these node lengths. As such, the ceramic input capacitor C1 needs to be placed as close as possible to the VIN and PGND pins (see Figure 12). Notice if there are input capacitors on both sides of the board, an appropriate amount of VIN and GND vias need to be added to interconnect both layers.. • The bootstrap cap CBOOT 0.1-µF 0603 16-V ceramic capacitor C4 in Figure 12 should be closely connected between BOOT and BOOT_R pins. • The switching node of the inductor should be placed relatively close to the Power Stage bq500101 VSW pins. Minimizing the VSW node length between these two components will reduce the PCB conduction losses and actually reduce the switching noise level. (1) 9.2 Layout Example L1 GND GND C3 VDD VDD GND 1 8 2 7 3 6 PWM BOOT C4 BOOT_R 9 VSW VSW 5 4 bq500101 VIN GND GND C1 Figure 12. Recommended PCB Layout (Top Down View) (1) Keong W. Kam, David Pommerenke, “EMI Analysis Methods for Synchronous Buck Converter EMI Root Cause Analysis”, University of Missouri – Rolla Copyright © 2016, Texas Instruments Incorporated Submit Documentation Feedback 13 bq500101 SLPS585 – MARCH 2016 www.ti.com 9.3 Thermal Considerations The bq500101 has the ability to use the GND planes as the primary thermal path. As such, the use of thermal vias is an effective way to pull away heat from the device and into the system board. Concerns of solder voids and manufacturability problems can be addressed by the use of three basic tactics to minimize the amount of solder attach that will wick down the via barrel: • Intentionally space out the vias from each other to avoid a cluster of holes in a given area. • Use the smallest drill size allowed in your design. The example in Figure 12 uses vias with a 10 mil drill hole and a 16 mil capture pad. • Tent the opposite side of the via with solder-mask. In the end, the number and drill size of the thermal vias should align with the end user’s PCB design rules and manufacturing capabilities. 14 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated bq500101 www.ti.com SLPS585 – MARCH 2016 10 Device and Documentation Support 10.1 Trademarks NexFET is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. 10.2 Electrostatic Discharge Caution These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 10.3 Glossary SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions. Copyright © 2016, Texas Instruments Incorporated Submit Documentation Feedback 15 bq500101 SLPS585 – MARCH 2016 www.ti.com 11 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. 11.1 Mechanical Drawing •° c1 a1 D2 0.300 (x45°) 1 8 5 MILLIMETERS DIM 16 4 INCHES MIN NOM MAX MIN NOM MAX A 0.800 0.900 1.000 0.031 0.035 0.039 a1 0.000 0.000 0.080 0.000 0.000 0.003 b 0.150 0.200 0.250 0.006 0.008 0.010 b1 2.000 2.200 2.400 0.079 0.087 0.095 b2 0.150 0.200 0.250 0.006 0.008 0.010 c1 0.150 0.200 0.250 0.006 0.008 0.010 D2 3.850 3.950 4.050 0.152 0.156 0.160 E 4.400 4.500 4.600 0.173 0.177 0.181 E1 3.400 3.500 3.600 0.134 0.138 0.142 E2 2.000 2.100 2.200 0.079 0.083 0.087 e 0.400 TYP K 0.300 TYP 0.016 TYP 0.012 TYP L 0.300 0.400 0.500 0.012 0.016 0.020 L1 0.180 0.230 0.280 0.007 0.009 0.011 θ 0.00 — — 0.00 — — Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated bq500101 www.ti.com SLPS585 – MARCH 2016 11.2 Recommended PCB Land Pattern (0.010) 0.250 (x18) (0.006) 0.150 (0.006) 0.150 (0.016) 0.400 (0.024) 0.600 (x 2) (0.008) 0.200 (x2) (0.087) 2.200 R0.100 R0.100 0.225 ( x 2) (0.009) (0.088) 2.250 (0.012) 0.300 (0.159) 4.050 11.3 Recommended Stencil Opening (0.008) 0.200 (0.008) 0.200 (0.029) 0.738 (x 8) (0.016) 0.400 (0.015) 0.390 (0.014) 0.350 0.300 (0.012) R0.100 0.850 (x8) (0.033) (0.012) 0.300 R0.100 0.225 ( x 2) (0.004) 0.115 0.440 (0.017) (0.009) 0.225 (0.008) 0.200 (0.087) 2.200 0.200 (0.008) NOTE: Dimensions are in mm (inches). Stencil is 100 µm thick. Copyright © 2016, Texas Instruments Incorporated Submit Documentation Feedback 17 PACKAGE OPTION ADDENDUM www.ti.com 24-Mar-2016 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (°C) Device Marking (4/5) BQ500101DPCR ACTIVE VSON-CLIP DPC 8 2500 Pb-Free (RoHS Exempt) CU NIPDAU Level-2-260C-1 YEAR -40 to 125 500101 BQ500101DPCT ACTIVE VSON-CLIP DPC 8 250 Pb-Free (RoHS Exempt) CU NIPDAU Level-2-260C-1 YEAR -40 to 125 500101 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. 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