IC manufacturers Texas Instruments

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Texas Instruments TPS25846-Q1

CISPR 25 Class 5 400-kHz rated 12-W automotive USB Type-A charger reference design

Overview

TopologyBuck Converter
Input voltage6-16 V
Output 15.1 V / 2.4 A
IC revision001

Description

This reference design is an EMI-optimized design for automotive USB Type-A charger with single 12-W output. The TPS25846-Q1 is used as DC-DC regulator and port controller. The switching frequency is 400kHz. The front-end filter is designed and PCB layout is optimized to pass stringent CISPR 25 Class 5 Conducted Electromagnetic Interference (EMI) standards. This reference design has already been tested to CISPR 25 Class 5 conducted EMI standards, which accelerates design time.

Features

  • Pass stringent CISPR 25 Class 5 Conducted Electromagnetic Interference (EMI) standards
  • 95.2% peak efficiency
  • Cross regulation within ±1% of 5V rail
  • 400k-Hz switching frequency for small PCB dimension

Typical applications

  • Automotive USB charge

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CTol. CVR
(V (DC))
SizeOperating TemperatureDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Type Samples
150060RS75000SPEC
25 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 625 Red 630 250 2 AlInGaP 140 0603 -40 °C up to +85 °C 1.6 0.8 0.7 Tape and Reel
74279252SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-CBF SMT EMI Suppression Ferrite Bead 1812 -55 °C up to +125 °C 4.5 3.2 1.5 0.5 880 940 108 MHz 4000 0.035 High Current
885012106018SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 16 V(DC)2.2 µF ±20% 16 0603 -55 °C up to +85 °C 100.05 GΩ X5R Class II 1.6 0.8 0.8 0.4 7" Tape & Reel
Order Code Data­sheet Simu­lation
150060RS75000SPEC
74279252SPEC
885012106018SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CTol. CVR
(V (DC))
SizeOperating TemperatureDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Type Samples