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Texas Instruments TPS541620 Synchronous SWIFT Step-Down Converter

Texas Instruments TPS541620 Synchronous SWIFT Step-Down Converter is a highly integrated non-isolated dual DC-DC converter. It is capable of high-frequency operation in a 3mm × 5mm package. The device can be configured as two single 6A rails or combined to drive a single 12A current load. The Texas Instruments TPS541620 implements a fixed-frequency advanced current mode control (ACM) with selectable ramp amplitude configurations to optimize the loop bandwidth. Two-mode selection pins (MODE1 and 2) are used to select switching frequency, configuration, clock phase delay, and internal compensation.

Features

Integrated 24mΩ and 10mΩ MOSFETs with lossless current sensing
Fixed-frequency, internally-compensated advanced current mode (ACM) control
Dual output with up to 6A each output
Dual-phase, single output for up to 12A
Phase interleaving operation for one or two phases
Synchronization to an external clock using SYNC and CLKO
0.5V to 5.5V output voltage range
Four selectable PWM ramp options for each switching frequency to optimize control loop performance

Soft-start time is configurable by an external cap in single-output, multi-phase configuration and is fixed at 1ms for dual-output configuration
True differential remote sensing in multi-phase operation
Independent enable and power good
Four selectable switching frequency options of 500kHz, 1MHz, 1.5MHz, and 2.0MHz
Supports safe pre-biased start-up
Overtemperature protection with hysteresis
–40°C to 150°C operation junction temperature
3mm × 5mm, 25-pin VQFN-HR package with 0.5mm pitch

Applications

Wireless and wired communications infrastructure equipment
Ethernet switches and routers

ASIC, SoC, FPGA, DSP I/O voltage rails
Industrial test and measurement equipment

Texas Instruments TPS541620 Synchronous SWIFT Step-Down Converter

Features

Applications

Functional Block Diagram

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