Texas Instruments TPS62065 - Manuals

Page 2 - Introduction; Features; Electrical Performance Specifications; Table 1

Introduction www.ti.com 1 Introduction The TPS62065-67EVM-347 is a fully assembled and tested pair of PCBs for evaluating the TPS62065and TPS62067 2-A step-down converters. The EVM comes configured with both a TPS62065 IC and aTPS62067 IC; there are two PCBs, one for each respective step-down conver...

Page 3 - These diagrams are provided for reference only. See

www.ti.com TPS62056/67EVM Schematic 3 TPS62056/67EVM Schematic Figure 1 shows the TPS62065EVM schematic. Figure 2 illustrates the TPS62067EVM schematic. Figure 1. TPS62065EVM Schematic Figure 2. TPS62067EVM Schematic NOTE: These diagrams are provided for reference only. See Table 2 , the Bill of Mat...

Page 4 - Connector and Test Point Descriptions; A feed-forward capacitor is required. Refer to the; converter is capable of carrying a load current up to 2000 mA.

Connector and Test Point Descriptions www.ti.com 4 Connector and Test Point Descriptions 4.1 Enable Jumpers/Switches: TPS62065EVM 4.1.1 J10 VIN This header is the positive connection to the input power supply. The power supply must be connectedbetween J10 and J12 (GND). The leads to the input supply...

Page 5 - converter is capable of a load up to 2,000 mA load current.; This function is only available on the TPS62067EVM.

www.ti.com Connector and Test Point Descriptions 4.1.9 J16 VOUT (SMA) This SMA connector is connected to the output voltage of the TPS62065. It can be used to easily analyzethe noise spectrum of the output voltage with a spectrum analyzer. By default, J16 is not assembled onthe EVM. 4.2 Enable Jumpe...

Page 6 - Test Configuration; Hardware Setup; Figure 3; Figure 3. Hardware Board Connection

J12 J13 J11 J14 J10 J15 JP10 ON EN OFF VIN GND VOUT GND S+ + S+ S - - S - TPS62065/67EVM-347 DC Power Supply Load Oscilloscope Test Configuration www.ti.com 4.2.8 JP20 EN This jumper enables/disables the TPS62067 device on the EVM. Shorting jumper JP20 between thecenter pin and On turns on the unit....

Page 7 - Testing Procedure; Follow these procedures when configuring the EVM for testing.; CAUTION; This feature is only available on the TPS62067EVM.

www.ti.com Test Configuration 5.2 Testing Procedure Follow these procedures when configuring the EVM for testing. CAUTION Many of the components on the TPS62065/67EVM-347 are susceptible todamage by electrostatic discharge (ESD). Customers are advised to observeproper ESD handling precautions when u...

Page 8 - EFFICIENCY vs LOAD CURRENT; Efficiency; Figure 4; Load

100 95 90 85 80 75 70 65 60 55 50 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 I (A) OUT Efficiency(%) V = 3.0 V IN V = 3.3 V V = 3.6 V V = 4.2 V V = 5.0V IN IN IN IN L = 1.0 H (LQH441R0)C = 10 F (0603 size) m m OUT V =1.8 V Mode: Auto PFM/PWM OUT EFFICIENCY vs LOAD CURRENT 2 V/div 500 mA/div 2 A/div 1...

Page 9 - Figure 6

2 V/div 2 V/div 2 V/div 1 A/div Time (100 s/div) m V = 4.2 V V = 3.3 V IN OUT Load = 2R2 PG Pull-up Resistor = 10 k W TPS62067 Startup Time (1 ms/div) 5 V/div 2 V/div 2 V/div V = 4.2 V V = 3.3 V Load = No Load PG Pull-up Resistor = 10 k W IN OUT TPS62067 Shutdown www.ti.com TPS62065/67EVM Test Data ...

Page 11 - Control Loop Bode Diagrams: TPS62065; and; Figure 10. TPS62065 Gain and Phase vs Frequency; Figure 11. TPS62065 Gain and Phase vs Frequency

www.ti.com TPS62065/67EVM Test Data 6.5 Control Loop Bode Diagrams: TPS62065 Figure 10 and Figure 11 illustrate typical TPS62065 gain and phase performance versus frequency at VIN = 3.6 V and 5.0 V, respectively, using the TPS62025EVM. Conditions: VIN = 3.6 V, VOUT = 1.8 V, I OUT = 1.6 A; bandwidth:...

Page 12 - through

TPS62065/67EVM-347 Assembly Drawings and Layout www.ti.com 7 TPS62065/67EVM-347 Assembly Drawings and Layout Figure 12 through Figure 16 show the design of the TPS62065/67EVM-347 printed circuit boards. This EVM has been designed using a four-layer, 1-ounce copper-clad PCB (3.81 cm by 4.57 cm) with ...

Page 18 - Bill of Materials; Table 2

Bill of Materials www.ti.com 8 Bill of Materials Table 2 lists the bill of materials for the TPS62065/67EVM. Table 2. TPS62065/67EVM Bill of Materials (1) (2) (3) (4) Count RefDes Value Description Size Part Number MFR 2 C10, C20 22 m F Capacitor, ceramic, 10 V, X7R, 10% 1210 GRM32ER71A226K MuRata 2...

Page 20 - IMPORTANT NOTICE; Products

IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements,and other changes to its products and services at any time and to discontinue any product or service without notice. Customers shouldobtain the l...