Texas Instruments TPS62800EVM-892

Overview

TPS62800EVM-892 from Texas Instruments is an evaluation module designed to facilitate rapid prototyping and performance validation of the TPS6280x family of 1-A, ultra-low-quiescent-current (2.3 µA) step-down DC/DC converters in 1.05 mm × 0.7 mm WCSP packages. It integrates three independent sub-circuits-each populated with a different variant (TPS62800YKA, TPS62801YKA, TPS62802YKA)-supporting output voltages from 0.4 V to 3.3 V across input ranges of 1.8 V to 5.5 V, targeting space-constrained POL applications in wearables and smartphones.

For engineers reviewing the TPS62800EVM-892 datasheet, TPS62800EVM-892 schematic, TPS62800EVM-892 BOM, or TPS62800EVM-892 test results, this EVM provides validated thermal performance data (e.g., 1000 mA load at VIN = 5 V / VOUT = 1.2 V), loop response measurement capability via trace cut and resistor insertion, and flexible configuration for fixed/adjustable outputs using 0201 or 0603 resistors.

Technical Context

The TPS62800EVM-892 implements three fully isolated buck converter circuits on a single PCB, each based on TI's DCS-Control™ topology and optimized for minimal footprint: the smallest sub-circuit occupies just 5.7 mm² with max height of 0.65 mm. Each circuit includes dedicated input/output connectors (Jx1/Jx2), sense lines (S+/S−), enable (EN), and VSEL/MODE jumpers for mode selection (PFM/PWM) and startup voltage configuration.

Board-level features include provision for loop response measurement (via VOS pin isolation and Rx3 10-Ω resistor placement), optional input/output capacitor additions (Cx2, Cx5–Cx7), and configurable feedback networks using parallel R11/Rx2 (0201/0603) for adjustable outputs. The EVM supports both fixed-output IC variants (e.g., TPS62801YKA at 0.9 V) and adjustable versions (e.g., TPS62800YKA with 0.4–0.775 V range).

Key Specifications

Availability

TPS62800EVM-892 is available at Aetrix Electronics and suitable for power management validation, POL converter qualification, and DCS-Control™ topology evaluation requiring stable component supply, repeatable lab testing, and fast-turn reference design iteration.

Supply support for TPS62800EVM-892 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 ICs and evaluation platforms for system-level design validation.

The TPS62800EVM-892 belongs to TI's Power Management Evaluation Modules product line, engineered specifically to accelerate development of compact, high-efficiency DC/DC conversion in battery-powered and space-limited applications.

FAQ

What is the primary function of the TPS62800EVM-892?

The TPS62800EVM-892 is an evaluation module that enables functional and performance validation of the TPS6280x family of 1-A, ultra-low-I_Q (2.3 µA) buck converters. It hosts three independent circuits-each with a different TPS6280x variant-to verify output regulation, efficiency, thermal behavior, and loop stability across 0.4 V–3.3 V output ranges and 1.8 V–5.5 V inputs. The TPS62800EVM-892 itself is not a production component but a lab tool for design-in support.

Which IC variants are pre-installed on the TPS62800EVM-892?

The TPS62800EVM-892 includes three pre-populated ICs: U11 is TPS62800YKA (0.4–0.775 V adjustable), U21 is TPS62801YKA (0.8–1.55 V adjustable), and U31 is TPS62802YKA (1.8–3.3 V adjustable). Each resides in its own isolated sub-circuit with dedicated input/output connectors, jumpers (JPx1 for VSEL/MODE, JPx2 for EN), and feedback resistors-allowing simultaneous or independent evaluation of all three variants without hardware modification.

How do I configure the TPS62800EVM-892 for adjustable output voltage?

To configure adjustable output on the TPS62800EVM-892, install either R11 (0201, default) or Rx2 (0603, user-replaceable) in the feedback divider network-only one resistor should be present at a time. For example, on the TPS62800 sub-circuit, R11 = 56.2 kΩ sets ~0.6 V; replacing it with Rx2 = 15.4 kΩ yields ~0.9 V. The VSEL/MODE jumper (JPx1) must remain floating at startup to read the resistor-defined voltage; connecting JPx1 to PFM or PWM afterward only changes operating mode-not the setpoint.

Can the TPS62800EVM-892 be used to measure control-loop stability?

Yes-the TPS62800EVM-892 supports control-loop measurement via two documented modifications: (1) cutting the trace between the VOS pin and output capacitor (per Figure 1), and (2) installing a 10-Ω resistor across Rx3 pads on the backside. This creates an injection point for a 10-mV_pp AC signal to characterize phase/gain margin using standard network analyzer methods, as detailed in TI's "How to Measure the Control Loop of DCS-Control™ Devices" application note.

What are the mechanical dimensions and layout constraints of the TPS62800EVM-892?

The TPS62800EVM-892 PCB accommodates three discrete buck converter sections, with the smallest sub-circuit measuring 5.7 mm² in area and 0.65 mm maximum height-including 0402 inductors and 0201 passives. Gerber files are available from TI's product page. The board uses a 2-layer stack-up (top/bottom layers shown in Figures 5–6), with clearly labeled silkscreen for jumpers (JPx1/JPx2), connectors (Jx1/Jx2), and test points. No mechanical drawings or 3D models are included in the SLVUBC6B User's Guide.