Texas Instruments TPS62843678EVM-167

Overview

TPS62843678EVM-167 from Texas Instruments is an evaluation module designed to validate the TPS62843 family of 600-mA, ultra-low-quiescent-current (300-nA IQ) step-down converters in 0.8-mm × 1.05-mm WCSP packages. It integrates three independent circuits-each populated with TPS628436YKAR (0.6-V setpoint), TPS628437YKAR (0.9-V), and TPS628438YKAR (1.8-V)-supporting adjustable output ranges from 0.4 V to 3.6 V across 1.8–5.5 V input, with ≤1.0-mm profile for space-constrained wearables and smartphones.

For engineers reviewing the TPS62843678EVM-167 datasheet, TPS62843678EVM-167 board layout, TPS62843678EVM-167 schematic, or TPS62843678EVM-167 setup procedure, this page delivers verified functional scope, input/output connector mapping, voltage adjustment methodology, loop response measurement configuration, and component-level BOM traceability per sub-circuit.

Technical Context

The TPS62843678EVM-167 implements three fully isolated DCS-Control™ buck converter channels on a single PCB, each using TI's proprietary high-frequency (2.5-MHz typical) synchronous rectification architecture. Each channel features dedicated input (Jx1) and output (Jx2) screw-terminal connectors with Kelvin sense pairs (S+/S−), EN control via JPx1 jumper, and configurable feedback resistors (Rx1/Rx2) enabling precise output voltage tuning within defined ranges.

All three circuits share identical passive component footprints-including 1-µH shielded metal-composite inductors (DFE201610E-1R0M=P2), 47-µF/6.3-V X5R input capacitors (GRM21BR60J476ME15L), and 4.7–10-µF output ceramics-and maintain strict height compliance (<1.0 mm) through optimized DSBGA6 IC placement and 0201/0603 resistor sizing for real-world wearable PCB integration.

Key Specifications

Availability

TPS62843678EVM-167 is available at Aetrix Electronics and suitable for wearable power validation, smartphone POL testing, and IoT sensor node development requiring stable component supply and rapid prototyping capability.

Supply support for TPS62843678EVM-167 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in power management, signal chain, and high-reliability ICs for industrial, automotive, and consumer markets.

The TPS62843678EVM-167 belongs to TI's precision DC/DC evaluation platform series, engineered specifically to accelerate design-in of ultra-low-IQ buck converters in size- and power-sensitive applications like hearables, fitness trackers, and compact medical sensors.

FAQ

What is the purpose of the TPS62843678EVM-167?

The TPS62843678EVM-167 is a triple-channel evaluation module that enables functional validation and performance characterization of the TPS628436YKAR, TPS628437YKAR, and TPS628438YKAR buck converters. It provides pre-layout schematics, test points, and configurable feedback networks to verify efficiency, transient response, and DCS-Control™ loop stability under real operating conditions without custom PCB design.

How do I adjust the output voltage on the TPS62843678EVM-167?

Each channel on the TPS62843678EVM-167 uses parallel feedback resistors (Rx1 and Rx2) to set output voltage. To adjust, disconnect power, remove the installed 0201 resistor (Rx1), install the desired value in the 0603 footprint (Rx2), then reapply input. Resistor values are selected per the TPS62843x datasheet's VSET equation, supporting fine-grained tuning within each channel's specified range (e.g., 0.4–0.8 V for the TPS628436 circuit).

Can the TPS62843678EVM-167 measure control-loop response?

Yes-the TPS62843678EVM-167 supports direct control-loop measurement via two hardware modifications: cutting the trace between the VOS pin and output capacitor (per Figure 1-1), and installing a 10-Ω resistor across Rx3 pads. This allows injection of a 100-mVpp AC signal to perform Bode analysis of the DCS-Control™ loop, as documented in TI's "How to Measure the Control Loop of DCS-Control™ Devices" application note.

What input and output connectors does the TPS62843678EVM-167 use?

The TPS62843678EVM-167 uses dual 6-pin screw-terminal blocks: Jx1 (pins 1–2 = VIN, 3–4 = S+/S− input sense, 5–6 = GND) and Jx2 (pins 1–2 = VOUT, 3–4 = S+/S− output sense, 5–6 = GND). These provide robust, low-inductance connections with Kelvin sensing for accurate voltage regulation and ripple measurement across all three channels.

Is the TPS62843678EVM-167 compatible with other TPS62843 variants?

The TPS62843678EVM-167 is explicitly designed for the TPS628436YKAR, TPS628437YKAR, and TPS628438YKAR devices in DSBGA6 (WCSP) packaging. Its layout, component selection, and feedback network scaling match the electrical and thermal requirements of these three variants only; it is not validated for use with unrelated TPS62843 family members or alternate package types such as VQFN or WSON.