Datasheet Linear Technology LT8672 — Datenblatt

Hersteller	Linear Technology
Serie	LT8672

Aktiver Gleichrichterregler mit Rückwärtsschutz

Datenblätter

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PDF, 1.0 Mb, Datei hochgeladen: Oct 26, 2017

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Verpackung

	LT8672EMS#PBF	LT8672EMS#TRPBF	LT8672HMS#PBF	LT8672HMS#TRPBF	LT8672IMS#PBF	LT8672IMS#TRPBF
N	1	2	3	4	5	6
Package	MS-10 Paketumrisszeichnung	MS-10 Paketumrisszeichnung	MS-10 Paketumrisszeichnung	MS-10 Paketumrisszeichnung	MS-10 Paketumrisszeichnung	MS-10 Paketumrisszeichnung
Package Code	MS	MS	MS	MS	MS	MS
Package Index	05-08-1661	05-08-1661	05-08-1661	05-08-1661	05-08-1661	05-08-1661
Pin Count	10	10	10	10	10	10

Parameter

Parameters / Models	LT8672EMS#PBF	LT8672EMS#TRPBF	LT8672HMS#PBF	LT8672HMS#TRPBF	LT8672IMS#PBF	LT8672IMS#TRPBF
Number of Channels	1	1	1	1	1	1
Demo Boards	DC2548A	DC2548A	DC2548A	DC2548A	DC2548A	DC2548A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File
Diode Off with Back-to-Back FETs?	no	no	no	no	no	no
Export Control	no	no	no	no	no	no
Ideal Diode	Single, External, N-Channel	Single, External, N-Channel	Single, External, N-Channel	Single, External, N-Channel	Single, External, N-Channel	Single, External, N-Channel
Internal FET	no	no	no	no	no	no
Ishutdown, µA	3.5	3.5	3.5	3.5	3.5	3.5
Operating Temperature Range, °C	0 to 85	0 to 85	-40 to 125	-40 to 125	-40 to 85	-40 to 85
Total Quiescent Current, mA	0.02	0.02	0.02	0.02	0.02	0.02
Typical Current Capability, A	20	20	20	20	20	20
Vin Max, V	42	42	42	42	42	42
Vin Min, V	3	3	3	3	3	3

Öko-Plan

	LT8672EMS#PBF	LT8672EMS#TRPBF	LT8672HMS#PBF	LT8672HMS#TRPBF	LT8672IMS#PBF	LT8672IMS#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Konstruktionshinweise

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Active Rectifier Controller with Ultrafast Transient Response and Low Power Dissipation &mdash DN572
PDF, 657 Kb, Datei veröffentlicht: Feb 14, 2018
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Design Note
Active Rectifier Controller with Ultrafast Transient Response and
Low Power Dissipation
Bin Wu
Introduction
The LT8672 is an active rectifier controller that (along
with a MOSFET) provides reverse current protection and
rectification for power supplies in automotive environments.
This job is traditionally taken on by a Schottky diode, over
which the LT8672вЂ™s active protection has a number of
advantages: Minimal power dissipation Small, predictable, regulated 20mV voltage drop
The LT8672 also includes a number of features to satisfy
supply rail requirements in automotive environments: Reverse input protection to вЂ“40V Wide input operation range: 3V to 42V Ultrafast transient response Rectifies 6VP-P up to 50kHz; rectifies 2VP-P up to 100kHz Integrated boost regulator for the FET driver performs
better than charge pump devices
Figure 1 shows a complete protection solution. Fast Response for Input Ripple Rectification
Automotive standardsвЂ”ISO 16750 or LV124вЂ”specify
that automotive electronic control units (ECUs) may face a
supply with a superimposed AC ripple of up to 6VP-P at up to
30kHz. The LT8672's gate driver that controls the external
MOSFET is strong enough to handle ripple frequencies of up VBATT
12V to 100kHz, which minimizes reverse current. An example of
such an AC ripple rectification is shown in Figure 2. Low Power Dissipation Compared with a
Schottky Diode …

Modellreihe

Serie: LT8672 (6)

LT8672EMS#PBF LT8672EMS#TRPBF LT8672HMS#PBF LT8672HMS#TRPBF LT8672IMS#PBF LT8672IMS#TRPBF

Herstellerklassifikation

Monitor, Control and Protection > PowerPath Controllers & Ideal Diodes