ncp1588mntzg ON Semiconductor, ncp1588mntzg Datasheet

ncp1588mntzg

Manufacturer Part Number

ncp1588mntzg

Description

Low Voltage Synchronous Buck Controller

Manufacturer

ON Semiconductor

Datasheet

1.NCP1588MNTZG.pdf (11 pages)

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NCP1588, NCP1589,

NCP1588A

Low Voltage Synchronous

Buck Controller

from a 5 V or 12 V supply. This device is capable of producing an

output voltage as low as 0.8 V. This device is capable of converting

voltage from as low as 2.5 V. This 10-pin device provides an optimal

level of integration to reduce size and cost of the power supply.

Features include a 1.5 A gate driver design and an internally set

300 kHz (NCP1588, NCP1589) and 600 kHz (NCP1588A) oscillator.

In addition to the 1.5 A gate drive capability, other efficiency

enhancing features of the gate driver include adaptive non-overlap

circuitry. The NCP158x also incorporates an externally compensated

error amplifier. Protection features include programmable short circuit

protection and undervoltage lockout (UVLO).

Features

•

Applications

•

August, 2007 - Rev. 2

The NCP158x is a low cost PWM controller designed to operate

Oscillator

300 kHz (NCP1588, NCP1589) and 600 kHz (NCP1588A) Internal

Boost Pin Operates to 26.4 V

Voltage Mode PWM Control

Precision 0.8 V Internal Reference

Adjustable Output Voltage

Internal 1.5 A Gate Drivers

80% Max Duty Cycle

Input Under Voltage Lockout

Programmable Current Limit

This is a Pb-Free Device

Graphics Cards

Desktop Computers

Servers / Networking

DSP & FPGA Power Supply

DC-DC Regulator Modules

Range from 4.5 to 13.2 V

†For information on tape and reel specifications,

NCP1588MTR2G

NCP1588MNTZG

NCP1588AMNTZG

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

(Note: Microdot may be in either location)

CASE 485C

BOOT

Device

GND

DFN10

158x

ORDERING INFORMATION

PIN CONNECTIONS

http://onsemi.com

= Specific Device Code

= 8, 8A or 9

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb-Free Device

(Top View)

(Pb-Free)

Package

DFN10

MARKING DIAGRAMS

Publication Order Number:

ALYWG

3000/Tape & Reel

158x

Shipping

PGOOD

VOS

COMP/EN

NCP1588/D

†

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ncp1588mntzg Summary of contents

Page 1

... GND (Top View) ORDERING INFORMATION Device Package NCP1588MTR2G DFN10 (Pb-Free) NCP1588MNTZG DFN10 (Pb-Free) NCP1588AMNTZG DFN10 (Pb-Free) †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. 1 158x ...

Page 2

PGOOD COMP/ 17.08kW 0.0015mF C2 0.007mF FB C3 0.014mF R4 R1 3.878kW R3 4.12kW 74.2W PGOOD 9 VOS MONITOR OV and UV 0 ref 0 ref COMP/EN ...

Page 3

PIN FUNCTION DESCRIPTION Pin No. Symbol 1 BOOT Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BOOT pin). Connect ...

Page 4

ELECTRICAL CHARACTERISTICS 1.0 nF (REF:NTD30N02), for min/max values unless otherwise noted Characteristic Input Voltage Range Boost Voltage Range Supply Current Quiescent Supply Current Boost Quiescent Current Undervoltage Lockout UVLO Threshold NCP1588 NCP1589, NCP1588A UVLO ...

Page 5

ELECTRICAL CHARACTERISTICS 1.0 nF (REF:NTD30N02), for min/max values unless otherwise noted Characteristic Soft-Start Soft-Start time Power Good Output Saturation Voltage OVP Threshold to Part Disable UVP Threshold to Part Disable OVP Threshold to PGOOD ...

Page 6

NCP1588, NCP1589, NCP1588A 305 V CC 303 301 299 297 295 JUNCTION TEMPERATURE (°C) J Figure 3. Oscillator Frequency (f SW 4.0 3.5 3.0 2.5 2.0 1.5 1 JUNCTION TEMPERATURE ...

Page 7

Overcurrent Protection (OCP) The low-side R sense is implemented by comparing DSon the voltage at the LX, at the end time to an internally generated fixed voltage. If the phase voltage is lower than OCP trip voltage, ...

Page 8

UVLO Fault 1.45 V COMP -0.7 V 700 OCP Program‐ mable LG V OUT Monitor POR UVLO NCP1588, NCP1589, NCP1588A 0 NORMAL Figure 7. Typical Startup Sequence ...

Page 9

Overvoltage Feedback and Compensation The NCP158x allows the output voltage to be adjusted from 0 5.0 V via an external resistor divider network. The controller will try to maintain 0 ...

Page 10

Output Filter Double Pole Frequency OUT OUT + 2.653 kHz F lc c.. ESR Zero Frequency ESR OUT ...

Page 11

... Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center ...

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