Texas Instruments LM5163 Bedienungsanleitung

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LM5163 100V Input, 0.5A Synchronous Buck DC/DC Converter With Ultra-low I

Q

1 Features

•Designed for reliable and rugged applications

–Wide input voltage range of 6V to 100V

–Junction temperature range: –40°C to +150°C

–Fixed 3ms internal soft-start timer

–Peak and valley current-limit protection

–Input UVLO and thermal shutdown protection

•Optimized for ultra-low EMI requirements

–Meets CISPR 25 class 5 standard

•Suited for scalable Industrial power supplies and

battery packs

–Low minimum on- and off-times of 50ns

–Adjustable switching frequency up to 1MHz

–Diode emulation for high light-load efficiency

–10.5µA no-load input quiescent current

–3µA shutdown quiescent current

•Integration reduces design size and cost

–COT mode control architecture

–Integrated 0.725Ω NFET buck switch

–Integrated 0.34Ω NFET synchronous rectifier

eliminates external Schottky diode

–1.2V internal voltage reference

–No loop compensation components

–Internal VCC bias regulator and boot diode

–Open-drain power good indicator

–8-pin SOIC package with PowerPAD™

•Create a custom regulator design using

WEBENCH

®

power designer

2 Applications

•Industrial battery pack (≥10S)

•Battery pack – e-bike/e-scooter/LEV

•Motor drives, drones, communications equipment

3 Description

The LM5163 synchronous buck converter is designed

to regulate over a wide input voltage range,

minimizing the need for external surge suppression

components. A minimum controllable on-time of 50ns

facilitates large step-down conversion ratios, enabling

the direct step-down from a 48V nominal input to

low-voltage rails for reduced system complexity and

solution cost. The LM5163 operates during input

voltage dips as low as 6V, at nearly 100% duty cycle

if needed, making the device an excellent choice for

wide input supply range industrial and high cell count

battery pack applications.

With integrated high-side and low-side power

MOSFETs, the LM5163 delivers up to 0.5A of output

current. A constant on-time (COT) control architecture

provides nearly constant switching frequency with

excellent load and line transient response. Additional

features of the LM5163 include ultra-low I

Q

and

diode emulation mode operation for high light-load

efficiency, innovative peak and valley overcurrent

protection, integrated VCC bias supply and bootstrap

diode, precision enable and input UVLO, and thermal

shutdown protection with automatic recovery. An

open-drain PGOOD indicator provides sequencing,

fault reporting, and output voltage monitoring.

The LM5163 is available in a thermally-enhanced, 8-

pin SO PowerPAD

™

package. The device 1.27mm

pin pitch provides adequate spacing for high-voltage

applications.

Package Information

PART

NUMBER

PACKAGE

(1)

PACKAGE SIZE

(2)

LM5163DDA (SO PowerPAD, 8)4.9mm × 6mm

(1)For more information, see Section 10.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

V

OUT

= 12 V

SW

BST

PGOOD

VIN

EN/UVLO

GND

RON

FB

LM5163

C

OUT

22 µF

C

IN

2.2 µF

V

IN

= 6 V...100 V

I

OUT

= 0.5 A

L

O

120 µH

*V

OUT

tracks V

IN

if V

IN

< 12 V

C

BST

2.2 nFR

FB1

448 k:

R

FB2

49.9 k:

R

RON

100 k:

U

1

Typical Application

Load (A)

Efficiency (%)

0.0010.010.10.5

60

65

70

75

80

85

90

95

100

D001

V

IN

= 15V

V

IN

= 24V

V

IN

= 48V

V

IN

= 60V

Typical Application Efficiency, V

OUT

= 12V

LM5163

SNVSBB3A – OCTOBER 2019 – REVISED APRIL 2024

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Produktspezifikationen