IC-Hersteller Texas Instruments

IC-Hersteller (98)

Texas Instruments LM61480

8-A buck converter optimized for power density and low EMI

Details

TopologieAbwärtswandler
Eingangsspannung3-36 V
Ausgang 15 V / 8 A
Ausgang 23.3 V / 8 A
Ausgang 33.3 V / 8 A
Ausgang 45 V / 8 A
IC-RevisionA

Beschreibung

The LM6x4xx family of buck regulators are regulators that provide either fixed or adjustable output voltage that can be set from 1 V to 95% of expected input voltage. These regulators operate under a wide input voltage range or 3 V to 36 V and have transient tolerance up to 42 V.The family is designed for low EMI. The devices incorporate pin-selectable spread spectrum and an adjustable SW node rise time. Dual Random Spread Spectrum (DRSS) frequency hopping is set to ±5.5% (typical), drastically reducing peak emissions through a combination of triangular and pseudo random modulation. DRSS also includes advanced techniques to reduce output voltage ripple caused by spread spectrum modulation.An open-drain RESET output with filtering and delayed release gives a true indication of system status. In auto mode, the device automatically transitions between fixed-frequency pulse width modulation (FPWM) and pulse frequency modulation (PFM) modes of operation, allowing an unloaded current consumption of only 5 µA (typical). Electrical characteristics are specified over a junction temperature range of –40°C to +150°C.

Eigenschaften

Functional Safety-CapableDocumentation available to aid functional safety system designInput voltage range from 3 V to 36 VRESET output with filter and delayed releaseDesigned for low EMI:CISPR 11/32 class B compliant EVMPin-configurable spread spectrumAdjustable SW node rise timeAbove and below AM band operation: pin configurable at fixed 400 kHz and 2.2 MHz or adjustable from 200 kHz – 2.2 MHzLow EMI symmetrical pinoutLight load mode is pin-configurable for constant frequency or pulse frequency modulation (PFM)High-efficiency solution95% efficient for an 8-A load5-µA input current while unloaded in auto mode<1-µA shutdown current (typical)High power densityBuilt-in compensation, soft start, current limit, thermal shutdown, and UVLO4.5-mm × 3.5-mm wettable flank QFN package

Typische Anwendungen

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads Status ProduktserieL
(µH)
IRP,40K
(A)
ISAT1
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialRDC max.
(mΩ)
MontageartZ @ 100 MHz
(Ω)
Zmax
(Ω)
Testbedingung ZmaxIR
(mA)
Z @ 1 GHz
(Ω)
H
(mm)
Typ Muster
744373460068SPEC
8 Dateien Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.WE-LHMI SMT Speicherdrossel 0.68 15.1 15.9 31.6 72 5.5 SMT 2.8
744325240SPEC
8 Dateien Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.WE-HCI SMT-Hochstrominduktivität 2.4 18.6 6.9 17 4.75 67 Superflux 5.225 SMT 4.7
74279226101SPEC
9 Dateien Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.WE-MPSB EMI Multilayer Power Suppression Bead 6 SMT 100 160 1100 MHz 8000 150 2.3 Hochstrom
Artikel Nr. Daten­blatt Simu­lation
744373460068SPEC
744325240SPEC
74279226101SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads Status ProduktserieL
(µH)
IRP,40K
(A)
ISAT1
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialRDC max.
(mΩ)
MontageartZ @ 100 MHz
(Ω)
Zmax
(Ω)
Testbedingung ZmaxIR
(mA)
Z @ 1 GHz
(Ω)
H
(mm)
Typ Muster