SGM6132 [SGMICRO]

3A, 28.5V, 1.4MHz Buck Converter;


型号：	SGM6132
厂家：	Shengbang Microelectronics Co, Ltd
描述：	3A, 28.5V, 1.4MHz Buck Converter
文件：	总10页 (文件大小：622K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SGM6132

3A, 28.5V, 1.4MHz Buck Converter

GENERAL DESCRIPTION

FEATURES

● 4.5V to 28.5V Input Voltage Range

● 0.8V to 22V Adjustable Output Voltage Range

● 3A Output Current

The SGM6132 is a current-mode buck converter with

an internal power MOSFET switch. This device has an

adjustable output voltage range of 0.8V to 22V and a

fixed switching frequency of 1.4MHz. It can efficiently

provide up to 3A output load current over a wide input

supply range from 4.5V to 28.5V with good load and

line regulations responses.

● 91% Peak Efficiency

● Shutdown Supply Current: 18µA (MAX)

● 100mΩ Internal Power MOSFET Switch

● 1.4MHz Fixed Switching Frequency

● Cycle-by-Cycle Current Limit Protection

● Thermal Shutdown Protection

In addition, the SGM6132 is highly efficient with peak

efficiency at 91% when in operation. The shutdown

supply current consumed by the regulator is less than

18µA. Protection features include cycle-by-cycle

current limit and thermal shutdown. The device also

includes an internal soft-start and an external

adjustable soft-start function to limit the inrush current

and prevent the overshoot of output voltage.

● Under-Voltage Lockout

● Support Low ESR Ceramic Capacitors

● -40℃ to +85℃ Operating Temperature Range

● Available in a Green SOIC-8 (Exposed Pad) Package

APPLICATIONS

The SGM6132 is available in a Green SOIC-8

(Exposed Pad) package and also minimizes the

external components of the device to complete a 3A

buck DC/DC converter solution.

Battery Chargers

Flat Panel TVs

Set-Top Boxes

Cigarette Lighter Powered Devices

Pre-Regulators

TYPICAL APPLICATION

100

V_OUT= 5.0V

10Ω or shorted 10nF

INPUT

4.5V to 28.5V

4.7μH

V_OUT= 3.3V

OUTPUT

3.3V/3A

ENABLE

SGM6132

33kΩ

GND

COMP

V_IN= 12V

10.5kΩ

C_OUT

47μF

C_IN

5.6nF

B340A

22μF

ceramic cap

recommended

0.1μF

Optional

0.5

1.5

2.5

3.5

10kΩ

Load Current (A)

Figure 1. Typical Application Circuit

SG Micro Corp

www.sg-micro.com

JULY 2015–REV. B

SGM6132

3A, 28.5V, 1.4MHz Buck Converter

PACKAGE/ORDERING INFORMATION

SPECIFIED

TEMPERATURE

RANGE

PACKAGE

DESCRIPTION

ORDERING

NUMBER

PACKAGE

MARKING

PACKING

OPTION

MODEL

SGM

6132YPS8

XXXXX

SOIC-8

(Exposed Pad)

SGM6132

-40°C to +85°C

SGM6132YPS8G/TR

Tape and Reel, 2500

MARKING INFORMATION

NOTE: XXXXX = Date Code and Vendor Code.

X X X X X

Vendor Code

Date Code - Week

Date Code - Year

Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If

you have additional comments or questions, please contact your SGMICRO representative directly.

OVERSTRESS CAUTION

ABSOLUTE MAXIMUM RATINGS

Supply Voltage V_IN............................................. -0.3V to 31V

SW Voltage V_SW........................................-0.5V to V_IN+ 0.3V

Boost Voltage V_BS..............................V_SW- 0.3V to V_SW+ 6V

All Other Pins....................................................... -0.3V to 6V

Package Thermal Resistance

Stresses beyond those listed in Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to

absolute maximum rating conditions for extended periods

may affect reliability. Functional operation of the device at any

conditions beyond those indicated in the Recommended

Operating Conditions section is not implied.

SOIC-8 (Exposed Pad), θ_JA....................................... 50℃/W

Junction Temperature.................................................+150℃

Storage Temperature Range.......................-65℃ to +150℃

Lead Temperature (Soldering, 10s)............................+260℃

ESD Susceptibility

ESD SENSITIVITY CAUTION

This integrated circuit can be damaged by ESD if you don’t

pay attention to ESD protection. SGMICRO recommends that

all integrated circuits be handled with appropriate precautions.

Failureto observe proper handlingand installation procedures

can cause damage. ESD damage can range from subtle

performance degradation tocomplete device failure. Precision

integrated circuits may be more susceptible to damage

because very small parametric changes could cause the

device not to meet its published specifications.

HBM.............................................................................4000V

MM.................................................................................250V

RECOMMENDED OPERATING CONDITIONS

Input Voltage Range.........................................4.5V to 28.5V

Operating Temperature Range...................... -40°C to +85°C

DISCLAIMER

SG Micro Corp reserves the right to make any change in

circuit design, or specifications without prior notice.

SG Micro Corp

www.sg-micro.com

JULY 2015

SGM6132

3A, 28.5V, 1.4MHz Buck Converter

PIN CONFIGURATION

(TOP VIEW)

GND

COMP

SOIC-8 (Exposed Pad)

PIN DESCRIPTION

NAME

FUNCTION

High-side Gate Drive Boost Input. A 10Ω resistor placed between SW and BS cap is strongly

recommended to reduce SW spike voltage.

Power Input. This pin powers the device and step-down converter switches. A large enough capacitor is

used to bypass this pin to GND to eliminate input’s noise.

Power Switching Output. Place a capacitor between SW and BS to supply the high-side switch.

Ground. (Exposed pad is connected to the backside of GND)

GND

Feedback Input. Connect to the resistor divider between output and ground to set output voltage.

Compensation Node for regulation control loop compensation. An additional capacitor between COMP

and GND may be needed.

COMP

Enable Input for regulator’s turn-on or turn-off. Pull EN high to turn on the regulator, and pull EN low to

turn it off. Output voltage is discharged when the device is off. EN is disconnected in automatic startup.

Soft-Start Control Input. A capacitor is placed between SS and GND to set the soft-start period.

Disconnect the SS to disable the soft-start function.

Exposed

Pad

GND

Power Ground Exposed Pad. Must be connected to GND plane.

SG Micro Corp

JULY 2015

www.sg-micro.com

SGM6132

3A, 28.5V, 1.4MHz Buck Converter

ELECTRICAL CHARACTERISTICS

(V_IN= 12V, T_A= +25℃, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

4.5

TYP

MAX

28.5

0.824

UNITS

Input Voltage Range

V_IN

Feedback Voltage

V_FB

0.776

0.8

Shutdown Supply Current

Quiescent Supply Current

High-side Switch (M1) On-Resistance

Low-side Switch (M2) On-Resistance

Error Amplifier Transconductance

Error Amplifier Voltage Gain

SW Leakage Current

I_SHDN

I_Q

V_EN= 0V

μA

mΩ

V_EN= 2.6V, V_FB= 1V

0.8

1.7

R_ONH

R_ONL

G_EA

100

∆V_FB= ±12.5mV

500

800

10000

1120

μA/V

V/V

μA

A_EA

I_LSW

V_EN= 0V, V_SW= 0V

Current Limit

I_LIM

4.2

6.2

Current Sense to COMP

Transconductance

G_CS

A/V

Maximum Duty Cycle

D_MAX

D_MIN

V_IH

V_FB= 0.6V

V_FB= 1V

Minimum Duty Cycle

EN Threshold Voltage

EN Pull-Up Current

1.2

V_IL

0.4

V_EN= 0V

0.8

1.4

140

3.8

μA

MHz

kHz

Oscillator Frequency

f_OSC

1.15

1.6

Short-Circuit Oscillator Frequency

Under-Voltage Lockout Threshold

V_FB= 0V

V_INRising

3.5

4.2

Under-Voltage Lockout Threshold

Hysteresis

230

Soft-Start Period

C_SS= 0.1μF

Thermal Shutdown Temperature

T_SHDN

160

℃

SG Micro Corp

www.sg-micro.com

JULY 2015

SGM6132

3A, 28.5V, 1.4MHz Buck Converter

TYPICAL PERFORMANCE CHARACTERISTICS

V_IN= 12V, C_IN= 22µF, C_OUT= 47µF, L = 4.7µH and T_A= +25°C, unless otherwise noted.

Feedback Voltage vs. Temperature

Efficiency vs. Load Current

0.83

0.82

0.81

0.80

0.79

0.78

0.77

100

V_OUT= 5.0V

V_OUT= 2.5V

V_IN= 24V

0.5

1.5

2.5

3.5

-50

-25

100

Load Current (A)

Temperature (℃)

Steady State Operation

Shutdown Through Enable

SG Micro Corp

JULY 2015

www.sg-micro.com

SGM6132

3A, 28.5V, 1.4MHz Buck Converter

TYPICAL PERFORMANCE CHARACTERISTICS (continued)

V_IN= 12V, C_IN= 22µF, C_OUT= 47µF, L = 4.7µH and T_A= +25°C, unless otherwise noted.

Startup Through Enable

Load Transient Response

Startup Through Enable

SG Micro Corp

www.sg-micro.com

JULY 2015

SGM6132

3A, 28.5V, 1.4MHz Buck Converter

REVISION HISTORY

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

JULY 2015 ‒ REV.A.4 to REV.B

Page

Changed Typical Application and Input Capacitor............................................................................................................................................1, 8

JULY 2014 ‒ REV.A.3 to REV.A.4

Page

Added a 10Ω resistor between SW and BS pin in application circuit .......................................................................................................... 1, 3, 10

APRIL 2014 ‒ REV.A.2 to REV.A.3

Page

Changed typical application, shutdown supply current and electrical characteristics........................................................................................ 1, 4

JANUARY 2013 ‒ REV.A.1 to REV.A.2

Page

Added Soft-Start Section .....................................................................................................................................................................................7

NOVEMBER 2012 ‒ REV.A to REV.A.1

Page

Changed Electrical Characteristic (Maximum Duty Cycle)....................................................................................................................................4

Changes from Original (AUGUST 2012) to REV.A

Page

Changed from product preview to production data.............................................................................................................................................All

SG Micro Corp

www.sg-micro.com

JULY 2015

PACKAGE INFORMATION

PACKAGE OUTLINE DIMENSIONS

SOIC-8 (Exposed Pad)

3.302

2.413 5.56

1.91

1.27

0.61

RECOMMENDED LAND PATTERN (Unit: mm)

Dimensions

In Millimeters

Dimensions

In Inches

Symbol

MIN

MAX

MIN

MAX

0.067

0.004

0.061

0.020

0.010

0.201

0.134

0.157

0.244

0.099

1.700

0.100

1.550

0.510

0.250

5.100

3.402

4.000

6.200

2.513

0.000

1.350

0.330

0.170

4.700

3.202

3.800

5.800

2.313

0.000

0.053

0.013

0.007

0.185

0.126

0.150

0.228

0.091

1.27 BSC

0.050 BSC

0.400

0°

1.270

8°

0.016

0°

0.050

8°

SG Micro Corp

www.sg-micro.com

TX00013.000

PACKAGE INFORMATION

TAPE AND REEL INFORMATION

REEL DIMENSIONS

TAPE DIMENSIONS

Reel Diameter

Reel Width (W1)

DIRECTION OF FEED

NOTE: The picture is only for reference. Please make the object as the standard.

KEY PARAMETER LIST OF TAPE AND REEL

Reel Width

Reel

Diameter

Pin1

Package Type

(mm)

(mm) (mm) (mm) (mm) (mm) (mm) (mm) Quadrant

SOIC-8

(Exposed Pad)

13″

12.4

6.40

5.40

2.10

4.0

8.0

2.0

12.0

SG Micro Corp

TX10000.000

www.sg-micro.com

PACKAGE INFORMATION

CARTON BOX DIMENSIONS

NOTE: The picture is only for reference. Please make the object as the standard.

KEY PARAMETER LIST OF CARTON BOX

Length

(mm)

Width

(mm)

Height

(mm)

Reel Type

Pizza/Carton

13″

386

280

370

SG Micro Corp

www.sg-micro.com

TX20000.000

SGM6132 [SGMICRO]

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