TPS63050EVM-180

User's Guide SLVU806 – July 2013 TPS6305xEVM-180 This user’s guide describes the characteristics, operation, and use of the TPS6305xEVM-180 evaluation module (EVM). This EVM is designed to help the user easily evaluate and test the operation and functionality of the TPS63050 and TPS63051. The EVM converts a 2.5-V to 5.5-V input voltage to a regulated 3.3-V output voltage that delivers 500 mA. This document includes setup instructions for the hardware, a schematic diagram, a bill of materials, and printed-circuit board layout drawings for the evaluation module. 1 2 3 4 5 6 Contents Introduction .................................................................................................................. Setup ......................................................................................................................... Test Results ................................................................................................................. Board Layout ................................................................................................................ Schematic and Bill of Materials ........................................................................................... Related Documentation From Texas Instruments ...................................................................... 1 2 3 4 7 8 List of Figures 1 Thermal Performance (Vin = 5.5 V, Load = 500 mA) .................................................................. 3 2 Assembly Layer ............................................................................................................. 4 3 Top Layer Routing .......................................................................................................... 5 4 Bottom Layer Routing ...................................................................................................... 6 5 TPS6305xEVM-180 Schematic ........................................................................................... 7 List of Tables 1 1 Performance Specification Summary..................................................................................... 2 2 Current Limit Settings from ILIMx Pins ................................................................................... 3 3 TPS6305xEVM-180 Bill of Materials ..................................................................................... 8 Introduction TI's TPS6305x are highly efficient, single-inductor, buck-boost converters with 1-A switches in a 1.6 mm × 1.2 mm, 12-pin WCSP package. TPS63050 is an adjustable output voltage converter and TPS63051 is a fixed 3.3-V output voltage converter. 1.1 Background The TPS6305xEVM-180 uses either the TPS63050 adjustable version (PWR180-002) that is programmed with an external feedback divider to an output voltage of 3.3-V or the TPS63051 fixed 3.3-V output voltage version (PWR180-001). Both EVMs operate with an input voltage between 2.5-V and 5.5-V. SLVU806 – July 2013 Submit Documentation Feedback TPS6305xEVM-180 Copyright © 2013, Texas Instruments Incorporated 1 Setup 1.2 www.ti.com Performance Specification Table 1 provides a summary of the TPS6305xEVM-180 performance specifications. All specifications are given for operating in a free-air environment of an ambient temperature of 25°C. Table 1. Performance Specification Summary Specification Test Conditions Input voltage Output voltage Typ 2.5 PWM Mode Output current 1.3 Min 3.267 0 3.3 Max Unit 5.5 V 3.33 V 500 mA Modifications The printed-circuit board (PCB) for this EVM is designed to accommodate both the fixed and adjustable versions of this integrated circuit (IC). If the fixed output voltage version (TPS63051) is installed, R1 is replaced with a 0-Ω resistor and R2 is open. If the adjustable version (TPS63050) is installed, R1 and R2 are set per the datasheet. 2 Setup This section describes how to properly use the TPS6305xEVM-180. 2.1 2.1.1 Input/Output Connector and Header Descriptions J1 – VIN This header is the positive connection to the input power supply. The power supply must be connected between J1 and J3 (GND). The leads to the input supply should be twisted and kept as short as possible. The input voltage has to be between 2.5 V and 5.5 V. 2.1.2 J2 – S+/S– Header J2 can be used to measure the input voltage directly on the input capacitor. Therefore a 4-wire power and sense supply can be connected. The leads to the sensing connector should also be twisted. 2.1.3 J3 – GND This header is the return connection to the input power supply. Connect the power supply between J3 and J1 (VIN). The leads to the input supply should be twisted and kept as short as possible. The input voltage has to be between 2.5 V and 5.5 V. 2.1.4 J4 – VOUT This header is the positive connection of the output voltage. The load has to be connected between J4 and J6 (GND). 2.1.5 J5 – S+/S– Header J5 can be used to measure the output voltage directly on the output capacitor. 2.1.6 J6 – GND This header is the return connection of the output voltage. Connect the load between J6 and J4 (VOUT). 2.1.7 JP1 – EN This jumpers enable or disable the TPS6305x on the EVM. Place the jumper across ON and EN to enable the converter. Place the jumper across OFF and EN to disable the converter. A 1-MΩ pullup resistor is connected between VIN and EN. Removing the jumper on JP1 turns on the converter. 2 TPS6305xEVM-180 SLVU806 – July 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Test Results www.ti.com 2.1.8 JP2 – ILIM1 Together with JP3, this jumper controls the current limit of the TPS6305x. See Table 2. 2.1.9 JP3 – ILIM0 Together with JP2, this jumper controls the current limit of the TPS6305x. See Table 2. Table 2. Current Limit Settings from ILIMx Pins 2.1.10 ILIM0 ILIM1 Current Limit Setting (Typical) Low Low 200 mA High Low 300 mA Low High 500 mA High High 1A JP4 – MODE This jumpers control the operating mode of the TPS6305x on the EVM. Place the jumper across PWM and MODE to enable forced PWM mode with a constant switching frequency. Place the jumper across PFM and MODE to enable power save mode with higher efficiency. 2.1.11 TP1 – PG This test point outputs the PG (power good) pin of the TPS6305x. 2.1.12 TP2 – SS This test point outputs the SS (soft start) pin of the TPS6305x. 2.1.13 TP3/4 – GND These test points are convenient ground connections. 2.2 Setup To operate the EVM, simply connect an input supply between J1 and J3. Connect a load between J4 and J6. An input supply voltage of 2.5 V to 5.5 V is recommended. 3 Test Results The TPS6305xEVM-180 was used to take the data in the TPS6305x datasheet, SLVSAM8. See the device datasheet for the performance of this EVM. Figure 1. Thermal Performance (Vin = 5.5 V, Load = 500 mA) SLVU806 – July 2013 Submit Documentation Feedback TPS6305xEVM-180 Copyright © 2013, Texas Instruments Incorporated 3 Board Layout 4 www.ti.com Board Layout This section provides the TPS63050xEVM-180 board layout and illustrations. The gerbers are available on the EVM product page: TPS63051EVM-180. 4.1 Layout Figure 2. Assembly Layer 4 TPS6305xEVM-180 SLVU806 – July 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Board Layout www.ti.com Figure 3. Top Layer Routing SLVU806 – July 2013 Submit Documentation Feedback TPS6305xEVM-180 Copyright © 2013, Texas Instruments Incorporated 5 Board Layout www.ti.com Figure 4. Bottom Layer Routing 6 TPS6305xEVM-180 SLVU806 – July 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Schematic and Bill of Materials www.ti.com 5 Schematic and Bill of Materials This section provides the TPS6305xEVM-180 schematic and bill of materials. 5.1 Schematic Figure 5 illustrates the schematic for this EVM. L1 1.5uH U1 TPS6305x 2.5V to 5.5V A1 L1 VIN J1 A2 VIN VIN A3 EN R3 1M J2 ON S+ JP1 S- + J3 C7 OFF 47uF GND EN C1 B3 ILIM1 10uF C2 PFM/PWM B1 GND HIGH JP2 ILIM1 LOW JP4 MODE B2 ILIM0 2 L2 C1 ILIM0 LOW R1 PG C3 2 C2 C3 C4 TP2 SS 3.3V, 500mA 10uF 10uF C5 J5 1 1 S+ SS D3 SJ6 R2 C6 1000pF TP3 J4 VOUT FB D2 PWM PFMHIGH VOUT VOUT D1 GND 2 TP4 JP3 VOUT R4 1M TP1 1 Not Populated 2 See BOM for component usage PG Figure 5. TPS6305xEVM-180 Schematic SLVU806 – July 2013 Submit Documentation Feedback TPS6305xEVM-180 Copyright © 2013, Texas Instruments Incorporated 7 Related Documentation From Texas Instruments 5.2 www.ti.com Bill of Materials Table 3. TPS6305xEVM-180 Bill of Materials 6 -001 -002 RefDes Value Description Size Part Number MFR 3 3 C1-3 10uF Capacitor, Ceramic Chip, 6.3V, ±20%, X5R 0603 GRM188R60J106ME84 Murata 1 1 C6 1000pF Capacitor, Ceramic Chip, 50V, ±10%, X5R 0603 CGA3E2X5R1H102K080AA TDK 1 1 C7 47uF Capacitor, Tantalum, 8V, 35milliohm, 20% 3528(B) T520B476M008ATE035 Kemet 1 1 L1 1.5uH Inductor, SMT ±30% 2520 1269AS-H-1R5M Toko 1 0 R1 0 Resistor, Chip, 1/10W, 1% 0603 STD STD 0 0 R2 Open Resistor, Chip, 1/10W, 1% 0603 STD STD 0 1 R1 560k Resistor, Chip, 1/10W, 1% 0603 STD STD 0 1 R2 180k Resistor, Chip, 1/10W, 1% 0603 STD STD 2 2 R3-4 1M Resistor, Chip, 1/10W, 5% 0603 CRCW06031M00JNEA Vishay Dale 0 1 U1 -- IC, SINGLE INDUCTOR BUCK-BOOST WITH 1-A SWITCHES AND ADJUSTABLE SOFT START BGA TPS63050YFF TI 1 0 U1 -- IC, SINGLE INDUCTOR BUCK-BOOST WITH 1-A SWITCHES AND ADJUSTABLE SOFT START BGA TPS63051YFF TI Related Documentation From Texas Instruments Single Inductor Buck-Boost with 1-A Switches and Adjustable Soft Start datasheet (SLVSAM8) 8 TPS6305xEVM-180 SLVU806 – July 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. 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