NCV898031: Non-Synchronous SEPIC / Boost Controller, 2 MHz

The NCV898031 is an adjustable output non-synchronous 2 MHz SEPIC/boost controller which drives an external N-channel MOSFET. The device uses peak current mode control with internal slope compensation. The IC incorporates an internal regulator that supplies charge to the gate driver. Protection features include internally-set soft-start, undervoltage lockout, cycle-by-cycle current limiting and thermal shutdown. Additional features include low quiescent current sleep mode and microprocessor compatible enable pin.

Features

Peak Current Mode Control with Internal Slope Compensation
1.2 V 2% Reference Voltage
2 MHz Fixed Frequency Operation
Wide Input Voltage Range of 3.2 V to 40 V, 45 V Load Dump
Input Undervoltage Lockout (UVLO)
Internal Soft-Start
Low Quiescent Current in Sleep Mode
Cycle-by-Cycle Current Limit Protection
Hiccup-Mode Short-Circuit Protection (SCP)
Thermal Shutdown (TSD)

Benefits

Good transient response over a wide input voltage and load range
Accurate voltage regulation
Superior transient response, smaller size filtering components, fundamental frequency above the AM band
Works in a wide variety of applications
Disables start up in undervoltage conditions
Decreases inrush current during startup
Very low off-state current consumption
Protects against over current conditions
Protects against short circuit faults
Thermally protects IC

Applications

Start-Stop Systems
SEPIC (Non-Inverting Buck-Boost), Boost, Flyback, Forward Converter Topologies
Direct Gas Injection

End Products

Automotive Systems

Design & Development Tools (1)

Document Title	Document ID/Size	Revision	Revision Date
NCV898031 Design Worksheet	NCV898031 DWS.XLS (406kB)	3	Apr, 2016

Simulation Models (2)

Document Title	Document ID/Size	Revision	Revision Date
NCV898031 PSPICE Small_Signal Model.ZIP	NCV898031 PSPICE Small-Signal Model (SEPIC demo board modeling example included) (582kB)	2	Nov, 2016
NCV898031 VHDL-AMS Simulation Model	NCV898031-VHDL_AMS (51.0kB)	0

Evaluation Board Documents (5)

Document Title	Document ID/Size	Revision	Revision Date
NCV898031SEPGEVB Bill of Materials ROHS Compliant	NCV898031SEPGEVB_BOM_ROHS.PDF (45.0kB)	2
NCV898031SEPGEVB Evaluation Board User's Manual	EVBUM2167/D (608kB)	2	Jan, 2014
NCV898031SEPGEVB Gerber Layout Files (Zip Format)	NCV898031SEPGEVB_GERBER.ZIP (67.0kB)	0
NCV898031SEPGEVB Schematic	NCV898031SEPGEVB_SCHEMATIC.PDF (190.0kB)	1
NCV898031SEPGEVB Test Procedure	NCV898031SEPGEVB_TEST_PROCEDURE.PDF (15kB)	3

Data Sheets (1)

Document Title	Document ID/Size	Revision	Revision Date
2 MHz Non-Synchronous SEPIC/Boost Controller	NCV898031/D (152kB)	14	Jan, 2017

Package Drawings (1)

Document Title	Document ID/Size	Revision
SOIC-8 Narrow Body	751-07 (62.6kB)	AK

Evaluation/Development Tool Information

Product	Status	Compliance	Short Description
NCV898031SEPGEVB	Active	Pb-free	SEPIC Boost Evaluation Board

Order Information

Product	Status	Compliance	Package		MSL*	Container		Budgetary Price/Unit
NCV898031D1R2G	Active	AEC Qualified PPAP Capable Pb-free	SOIC-8	751-07	1	Tape and Reel	2500	$1.02

Specifications

Product	Topology	Phases	Control Mode	VCC Min (V)	VCC Max (V)	fSW Typ (kHz)	tres Typ (ns)
NCV898031D1R2G	Forward Step-Up Flyback Step-Up/Step-Down	1	Current Mode	3.2	45	Up to 2200

NCV898031 Design Worksheet NCV898031

NCV898031 PSPICE Small_Signal Model.ZIP NCV898031

NCV898031 VHDL-AMS Simulation Model NCV898031

SOIC-8 Narrow Body CM1216

NCV898031