Texas Instruments TPS63700DRCR

Overview

TPS63700DRCR from Texas Instruments is a fixed-frequency PWM inverting DC/DC converter generating negative output voltages down to –15 V, supporting up to 360 mA output current at 84% peak efficiency, with 2.7 V to 5.5 V input range and internal 1.213 V reference - used in OLED display bias supplies and portable instrumentation requiring isolated negative rails.

For engineers reviewing the TPS63700DRCR datasheet, TPS63700DRCR pinout, TPS63700DRCR application, or TPS63700DRCR equivalent, key selection considerations include its adjustable inverting topology, 1.4 MHz switching frequency enabling compact 4.7 µH inductors, thermal shutdown and overvoltage protection, and compatibility with Li-ion, NiMH, and regulated 3.3 V/5 V sources.

Technical Context

The TPS63700DRCR implements a buck-boost inverting topology with fixed 1.4 MHz PWM control, operating in continuous conduction mode (CCM) at medium-to-heavy loads and transitioning to discontinuous conduction mode (DCM) at light loads. Its multiple-feed-forward controller monitors VIN, VOUT, and switch voltage drop to dynamically adjust duty cycle.

It features integrated soft-start limiting inrush current, load disconnect via PMOS switch isolation during shutdown, and internal compensation requiring only a 4.7 nF capacitor on COMP. The error amplifier compares FB to GND for precise regulation, with VREF = 1.213 V serving as the feedback divider reference point.

Key Specifications

Pinout & Package

TPS63700DRCR is housed in a thermally enhanced 3 mm × 3 mm VSON-10 package with exposed PowerPAD™ for improved heat dissipation. The package supports high-power-density layouts and requires PCB copper thermal pad connection to ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar inverting DC/DC converter applications.

Compared with MAX774CPA+ and LT3467EDD, the TPS63700DRCR offers optimal balance of adjustability, integration (internal compensation, soft-start, load disconnect), and compact 3 mm × 3 mm footprint - making it ideal for space-constrained, battery-powered systems needing flexible negative rail generation.

Availability

TPS63700DRCR is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, and consumer OLED displays requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS63700DRCR 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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-efficiency DC/DC conversion and precision power solutions.

The TPS63700DRCR belongs to TI's low-noise, high-efficiency inverting DC/DC converter product line, designed specifically for portable and battery-operated applications demanding compact negative voltage generation with minimal external components.

FAQ

What is the minimum input voltage required for TPS63700DRCR to operate?

The TPS63700DRCR has an undervoltage lockout threshold of 2.35 V typical, with guaranteed operation starting at 2.7 V. Below 2.1 V, the device remains disabled. This ensures reliable startup from partially discharged Li-ion cells while preventing unstable regulation during brownout conditions. The TPS63700DRCR resumes normal operation once VIN rises above the UVLO hysteresis window.

Can TPS63700DRCR generate –15 V output, and what are the limitations?

Yes, the TPS63700DRCR supports adjustable output down to –15 V using an external resistor divider on FB and VREF. However, maximum achievable output current decreases as |VOUT| increases - at –15 V, output current is limited to approximately 100 mA with VIN = 5 V due to duty cycle and switch current constraints. The TPS63700DRCR maintains ±3% DC accuracy across this range when using 1% resistors.

How does the TPS63700DRCR handle thermal overload?

The TPS63700DRCR incorporates a thermal shutdown circuit that disables the power stage when junction temperature exceeds 150 °C. It remains latched off until temperature falls by 5 °C (hysteresis), then automatically recovers. This protects against sustained overloads or poor PCB thermal design. The 41.2 °C/W junction-to-ambient thermal resistance (RθJA) assumes proper PowerPAD soldering to a 1-in² copper area.

Is external compensation required for stable operation of TPS63700DRCR?

No - the TPS63700DRCR uses internally compensated control architecture. Only a 4.7 nF capacitor between COMP and GND is required to complete the loop. This eliminates tuning effort and improves design robustness across input/output conditions. The TPS63700DRCR's feed-forward topology further enhances transient response without external components.

Does TPS63700DRCR provide load disconnect during shutdown?

Yes, the TPS63700DRCR integrates a PMOS switch that fully disconnects the output from the input when EN is pulled low. This prevents reverse current flow and eliminates leakage paths to the negative rail, preserving battery energy in standby mode. The TPS63700DRCR achieves just 1.5 µA shutdown current, confirming effective isolation.