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TPS61391

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85-VOUT Boost converter with current mirror

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Data sheet

TPS61391

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost, Flyback, SEPIC Type Converter Vin (min) (V) 2.5 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 800 Features Enable, Nonsynchronous, UVLO Fixed Vout (min) (V) 20 Vout (max) (V) 84 Iq (typ) (µA) 500 Duty cycle (max) (%) 99 Switch current limit (typ) (A) 1
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost, Flyback, SEPIC Type Converter Vin (min) (V) 2.5 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 800 Features Enable, Nonsynchronous, UVLO Fixed Vout (min) (V) 20 Vout (max) (V) 84 Iq (typ) (µA) 500 Duty cycle (max) (%) 99 Switch current limit (typ) (A) 1
WQFN (RTE) 16 9 mm² 3 x 3
  • Input voltage range: 2.5 V to 5.5 V
  • Output voltage range: up to 85 V
  • R(DS)on of switching FET: 0.9 Ω
  • Switch current limit: 1000 mA
  • High optical power protection with 0.5-µs response time
  • Switching frequency: 700 kHz
  • Quiescent current: 110 µA from VIN, 340 µA from VOUT, 140 µA from AVCC
  • Soft-start time: 4.8 ms
  • Package: 3 mm × 3 mm × 0.75 mm QFN
  • Input voltage range: 2.5 V to 5.5 V
  • Output voltage range: up to 85 V
  • R(DS)on of switching FET: 0.9 Ω
  • Switch current limit: 1000 mA
  • High optical power protection with 0.5-µs response time
  • Switching frequency: 700 kHz
  • Quiescent current: 110 µA from VIN, 340 µA from VOUT, 140 µA from AVCC
  • Soft-start time: 4.8 ms
  • Package: 3 mm × 3 mm × 0.75 mm QFN

The TPS61391 is a 700-kHz pulse-width modulating (PWM) step-up converter with an 85-V switch FET with an input ranging from 2.5 V to 5.5 V. The switching peak current is up to 1000 mA. The TPS61391 includes accurate current mirror with two gain options selectable (1 : 5 or 4 : 5).

The TPS61391 also provides high optical-power protection with an additional FET in series with the APD power path with the typical response time of 0.5 µs . It can recover automatically once the high optical releasing.

The TPS61391 is available in 3 mm × 3 mm QFN package with exposed pad underneath.

The TPS61391 is a 700-kHz pulse-width modulating (PWM) step-up converter with an 85-V switch FET with an input ranging from 2.5 V to 5.5 V. The switching peak current is up to 1000 mA. The TPS61391 includes accurate current mirror with two gain options selectable (1 : 5 or 4 : 5).

The TPS61391 also provides high optical-power protection with an additional FET in series with the APD power path with the typical response time of 0.5 µs . It can recover automatically once the high optical releasing.

The TPS61391 is available in 3 mm × 3 mm QFN package with exposed pad underneath.
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Technical documentation

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Type Title Date
* Data sheet TPS61391 85-VOUT Boost Converter with Current Mirror Integrated datasheet PDF | HTML 11 Jul 2019
Application note High-Precision Negative-Voltage APD Power Supply Design with TPS61391 PDF | HTML 02 Nov 2020
Application note How to Sample the Small APD Current Precisely With TPS61390 Boost Converter 20 Dec 2019
Application note TPS61390 Boost Converter With Low APD Bias Voltage Ripple 13 Dec 2019
EVM User's guide TPS61391EVM-058 Evaluation Module 14 Nov 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS61391EVM-058 — 85-V boost converter evaluation module for TPS61391

The TPS61391 is a step-up converter with the current mirror and sample / hold circuitry being integrated, which is designed for biasing and monitoring the avalanche photodiodes (APD) in the optical receivers. The TPS61391 supports up to 85-V output from an input ranging from 2.5 V to 5.5 V. The (...)
User guide: PDF
Not available on TI.com
Calculation tool

SLVC801 — TPS61391 Calculation Tool

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
TPS61391 — 85-VOUT Boost converter with current mirror
Download
Design tool

SLVC800 — TPS61390 Design Tool

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
TPS61390 — 85-VOUT boost converter with current mirror and sample and hold TPS61391 — 85-VOUT Boost converter with current mirror
Download
Reference designs

PMP40871 — 48-V output low-noise phantom power reference design

This reference design delivers a 48-V output, low-noise power supply for the phantom power application using the TPS61391 and TPS7A4101. TPS61391 is a 700-kHz PWM step-up converter that converts 3.3 V or 5 V to 48.5 V. TPS7A4101 is a 50-V tolerant input and 0.29-V drop LDO that steps 48.5 V down (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
WQFN (RTE) 16 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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