HM1595-56 [HMSEMI]

2Aï¼30V Synchronous Rectified Step-Down Converter;


型号：	HM1595-56
厂家：	H&M Semiconductor
描述：	2Aï¼30V Synchronous Rectified Step-Down Converter
文件：	总4页 (文件大小：522K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

HM1595

2A，30V Synchronous Rectified Step-Down Converter

FEATURES

APPLICATIONS



8V to 30V operating input range

2000mA output current

Up to 92% efficiency



Distributed Power Systems

Automotive Systems

High efficiency (>80%) at light load

Internal Soft-Start

High Voltage Power Conversion

Industrial Power Systems

Battery Powered Systems

400kHz switching frequency

CC/CV control mode

Input under voltage lockout

Input over voltage lockout

Start-up current run-away protection

Short circuit protection

Thermal protection

PIN CONFIGURATION

4000V ESD

DESCRIPTION

The HM1595 is a CC/CV control mode

monolithic buck switching regulator. Operating

with an input range of 8-30V, the HM1595 delivers

2000mA of continuous output current, It adopts

NMOS for the main switch and PMOS for the

synchronous switch. The internal synchronous

power switches provide high efficiency without

the use of an external Schottky diode. At light

loads, regulators operate in low frequency to

maintain high efficiency and low output ripple.

Current mode control provides tight load transient

response and cycle-by-cycle current limit.

The HM1595 guarantees robustness with

short-circuit protection, thermal protection,

start-up current run-away protection, and input

under/over voltage lockout.

The HM1595 is available in 8-pin ESOP8 package,

which provides a compact solution with minimal

external components.

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HM1595

ORDER INFORMATION

PART MARKING

HM1595

OUTPUT VOLTAGE

PACKAGE DESCRIPTION

TEMPERATURE RANGE

-40°C to +85°C

5.1V

5.6V

ADJ

ESOP8

HM1595-56

HM1595-ADJ

-40°C to +85°C

TYPICALAPPLICATION

Optional Schottky Diode

During the transition between

high-side switch and low-side switch,

the body diode of the low side power

MOSFET conducts the inductor

current. The forward voltage of this

body diode is high. An optional

Schottky diode may be paralleled

between the SW pin and GND pin to

improve overall efficiency.

BLOCK DIAGRAM

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HM1595

PIN DESCRIPTION

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Name

GND

Description

Ground.

Adjustable Version Feedback input.

Output indicator led.

LED

Input voltage pin. VIN supplies power to the IC. Connect a 8V to 30V supply to VIN and bypass

VIN to GND with a suitably large capacitor to eliminate noise on the input to the IC.

SW is the switching node that supplies power to the output. Connect the output LC filter from SW

to the output load.

VIN

ABSOLUTE MAXIMUM RATING

Item

VIN,SW

Extreme value

-0.3V to +30V

-0.3V to +18V

125 ºC

FB,LED

Junction Temperature

Lead Temperature

Storage Temperature

260 ºC

-65 ºC to +150 ºC

RECOMMENDED OPERATING CONDITIONS

Item

Extreme value

Input Voltage VIN

8V to 28V

1.2V to 15V

Output voltage Vout

Operating Junction Temperature (T_J)

-40 ºC to +85 ºC

ELECTRICAL CHARATERISTICS

V_IN= 24V, T_A= 25ºC, unless otherwise stated.

Item

Symbol

Condition

Min. Typ. Max.

Units

Maximum Input voltage

V_{IN_BREAKDOWN}

I_Q>2mA,no switching

V_INfalling

V_INUndervoltage Lockout Thershold V_{IN_MIN}

7.5

100

V_INUndervoltage Lockout Hysteresis V_{IN_MIN_HYST}

V_INrising

V_INOvervoltage Lockout Thershold

V_INOvervoltage Lockout Hysteresis

Supply Current

V_{IN_MAX}

V_{IN_MAX_HYST}

I_Q

V_INrising

V_INfalling

100

V_FB=1.156V

8V<V_VIN<28V

HM1595-51

HM1595-56

Feedback Voltage

V_FB

1.132 1.156

1.17

5.3

5.6

Output Voltage

V_OUT

5.0

5.3

5.15

5.45

400

Output Voltage

V_OUT

Top Switch Resistance

R_DS(ON)T

mΩ

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HM1595

Bottom Switch Resistance

Top Switch Leakage Current

Bottom Switch Leakage Current

Top Switch Current Limit

Bottom Switch Current Limit

Switch Frequency

R_DS(ON)B

I_{LEAK_TOP}

I_{LEAK_BOT}

I_{LIM_TOP}

I_{LIM_BOT}

F_SW

200

mΩ

V_IN=24V,V_SW=0V

V_IN= V_SW= 24V

Minimum Duty Cycle

400

200

kHz

Minimum On Time

T_{ON_MIN}

T_{OFF_MIN}

D_MAX

Minimum Off Time

V_FB=0V

Maximum Duty Cycle

100

°C

Internal soft-start time

T_SS

400

150

Thermal Shutdown Temperature

Thermal Shutdown Hysteresis

T_TSD

T_TSDHYS

PACKAGE OUTLINE

ESOP8

UNIT: mm

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