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产品型号DCR012405P的概述

DCR012405P芯片概述 DCR012405P是一款高效的DC-DC转换器，主要用于工业和通信设备中的电源管理。这款芯片广泛应用于低电压电源轨的电源降压，适用于多种负载和供电电压范围内的应用场景。凭借其高转换效率、宽输入电压范围和小型化封装，DCR012405P芯片在电源设计中展现出卓越的性能，适合于便携式设备和空间受限的应用。 DCR012405P的详细参数 DCR012405P的技术规格一览如下： - 输入电压范围: 4.5V至28V - 输出电压: 5V - 输出电流: 最多可达1A - 效率: 高达90%以上 - 开关频率: 1MHz - 纹波电压: < 50mV - 工作温度范围: -40°C至85°C - 封装类型: SIP-4 - 负载调节: +/- 2% - 电源管理功能: 内置软启动和过载保护 DCR012405P的设计特点使其不仅能够满足工业标准，且能够为许多低...

产品型号DCR012405P的Datasheet PDF文件预览

DCR01

Series

DCR01

For most current data sheet and other

product information, visit www.burr-brown.com

Miniature, 1W Isolated

REGULATED DC/DC CONVERTERS

FEATURES

APPLICATIONS

● UL1950 RECOGNIZED

● POINT-OF-USE POWER CONVERSION

● PDIP-18, SO-28⁽¹⁾

● DIGITAL INTERFACE POWER

● 53W/in³(3.3W/cm³) POWER DENSITY

● DEVICE-TO-DEVICE SYNCHRONIZATION

● THERMAL PROTECTION

● 1000Vrms ISOLATION

● 400kHz SWITCHING

● GROUND LOOP ELIMINATION

● POWER-SUPPLY NOISE REDUCTION

DESCRIPTION

DCR01 family is a series of high-efficiency, input-

isolated, output-regulated DC/DC converters. In addi-

tion to 1W nominal, galvanically-isolated output power

capability, this range of DC/DCs offer very low out-

put noise, thermal protection and high accuracy.

● 125 FITS AT 55°C

● ±10% INPUT RANGE

● SHORT-CIRCUIT PROTECTED

● 5V, 12V, 24V INPUTS

The DCR01 family is implemented in standard molded

IC packaging, giving standard JEDEC outlines suit-

able for high-volume assembly.

● 3.3V, 5V OUTPUTS

● HIGH EFFICIENCY

The DCR01 is manufactured using the same technol-

ogy as standard IC packages, thereby achieving very

high reliability.

NOTE: (1) SO version available Q3 2000.

V_REC

SYNC

ENABLE

Input

Controller

LDO

Regulator

V_S

ERROR

V_OUT

International Airport Industrial Park

•

Mailing Address: PO Box 11400, Tucson, AZ 85734

•

Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706

• Tel: (520) 746-1111

Twx: 910-952-1111 Internet: http://www.burr-brown.com/

•

Cable: BBRCORP Telex: 066-6491

•

FAX: (520) 889-1510 Immediate Product Info: (800) 548-6132

•

PDS-1587A

Printed in U.S.A. May, 2000

SPECIFICATIONS

At T_A= +25°C, V_S= nominal, I_O= 10mA, C_O= 0.1µF, unless otherwise specified.

DCR01 SERIES

TYP

PARAMETER

CONDITIONS

MIN

MAX

UNITS

OUTPUT

Setpoint

DCR010503

DCR010505

3.3

0.5

DCR011203⁽²⁾

DCR011205⁽²⁾

DCR012403⁽³⁾

DCR012405⁽³⁾

Setpoint Accuracy

Maximum Output Current

DCR010503

2.0

300

200

390

200

390

200

DCR010505

DCR011203⁽²⁾

DCR011205⁽²⁾

DCR012403⁽³⁾

DCR012405⁽³⁾

Output Short-Circuit Protected

Line Regulation

DCR010503

Duration

Infinite

mV/V

DCR010505

DCR011203⁽²⁾

DCR011205⁽²⁾

DCR012403⁽³⁾

DCR012405⁽³⁾

Over Line and Load

DCR010503

10mA to 300mA Load, 4.5V to 5.5V Line

10mA to 200mA Load, 4.5V to 5.5V Line

10mA to 390mA Load, 10.8V to 13.2V Line

10mA to 200mA Load, 10.8V to 13.2V Line

10mA to 390mA Load, 21.6V to 26.4V Line

10mA to 200mA Load, 21.6V to 26.4V Line

–40°C to +85°C

1.0

2.5

DCR010505

DCR011203

DCR011205

DCR012403

DCR012405

Versus Temperature

Ripple and Noise

DCR0105 Ripple

20MHz Bandwidth, 50% Load

C_IN= 2.2µF, C_FILTER= 1µF, C_OUT= 0.1µF

100MHz Bandwidth, 50% Load

mVp-p

DCR0105 Noise

C_IN= 2.2µ, C_FILTER= 1µF, C_OUT= 0.1µF

INPUT

Nominal Voltage (V_S)

DCR0105xx

DCR0112xx

DCR0124xx

Voltage Range

Supply Current

DCR010503

–10

+10

I_O= 0mA

I_O= 10mA

I_O= 300mA

I_O= 0mA

I_O= 10mA

I_O= 200mA

I_O= 0mA

I_O= 10mA

I_O= 390mA

I_O= 0mA

I_O= 10mA

I_O= 200mA

I_O= 0mA

335

310

173

125

DCR010505

DCR011203⁽²⁾

DCR011205⁽²⁾

DCR012403⁽³⁾

DCR012405⁽³⁾

I_O= 10mA

I_O= 390mA

I_O= 0mA

I_O= 10mA

I_O= 200mA

Reflected Ripple Current

DCR010503, DCR01505

MHz Bandwidth, 100% Load

mAp-p

C_IN= 2.2µF, C_FILTER= 1µF

DCR01

SPECIFICATIONS (Cont.)

At T_A= +25°C, V_S= nominal, I_O= 10mA, C_O= 0.1µF, unless otherwise specified.

DCR01 SERIES

TYP

PARAMETER

CONDITIONS

MIN

MAX

UNITS

ISOLATION

Voltage

1s Flash Test

60s Test, UL1950⁽¹⁾

kVrms

Input/Output Capacitance

OUTPUT ENABLE CONTROL

Logic High Input Voltage

Logic High Input Current

Logic Low Input Voltage

Logic Low Input Current

DCR010503

2.0

V_REC

0.5

2.0 < V_ENABLE< V_REC

0 < V_ENABLE< 0.5

100

–0.2

DCR010505

ERROR FLAG

Logic High Open Collector Leakage

Logic Low Output Voltage

V_ERROR= 5V

Sinking 2mA

0.4

µA

THERMAL SHUTDOWN

Junction Temperature

Temperature Activated

Temperature Deactivated

150

130

°C

SYNCHRONIZATION PIN

Max External Capacitance on SYNC Pin

Internal Oscillator Frequency

External Synchronization Frequency

External Synchronization Signal High

External Synchronization Signal Low

kHz

720

2.5

800

2.5

880

5.0

0.4

TEMPERATURE RANGE

Operating

–40

+85

°C

NOTES: (1) During UL approval only. (2) DCR011203, DCR011205 available Q2 2000. (3) DCR0112403, DCR012405 available Q3 2000.

ABSOLUTE MAXIMUM RATINGS

ELECTROSTATIC

Input Voltage:

DISCHARGE SENSITIVITY

DCR0105 ............................................................................................ 7V

DCR0112 .......................................................................................... 15V

DCR0124 .......................................................................................... 29V

Storage Temperature ...................................................... –60°C to +125°C

Lead Temperature (soldering, 10s) ................................................. 270°C

This integrated circuit can be damaged by ESD. Burr-Brown

recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling

and installation procedures can cause damage.

ORDERING INFORMATION

ESD damage can range from subtle performance degrada-

tion to complete 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.

( P )

05 05

DCR01

Basic Model Number: 1W Product

Voltage Input:

5V In

Voltage Output:

5V Out

Package Code:

P = 18-Pin Plastic DIP, U = 28-Pin SO⁽¹⁾

NOTE: (1) SO version available Q3 2000.

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes

no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change

without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant

any BURR-BROWN product for use in life support devices and/or systems.

DCR01

PACKAGE/ORDERING INFORMATION

PACKAGE

DRAWING

NUMBER

SPECIFIED

TEMPERATURE

RANGE

PACKAGE

MARKING

ORDERING

NUMBER⁽¹⁾

TRANSPORT

MEDIA

PRODUCT

PACKAGE

DCR010503P

PDIP-18

SO-28

218-1

217-2

218-1

217-2

218-1

217-2

218-1

217-2

218-1

217-2

–40°C to +85°C

DCR010503P

DCR010505P

DCR010503U

DCR010505U

DCR011203P

DCR011203U

DCR011205P

DCR011205U

DCR012403P

DCR012403U

DCR012405P

DCR012405U

DCR010503P

DCR010505P

Rails

DCR010505P

DCR010503U⁽³⁾

DCR010505U⁽³⁾

DCR011203P⁽²⁾

DCR011203U^{(1, 3)}

DCR011205P⁽²⁾

DCR011205U^{(1, 3)}

DCR012403P⁽³⁾

DCR012403U^{(1, 3)}

DCR012405P⁽³⁾

DCR012405U^{(1, 3)}

DCR010503U/1K

DCR010505U/1K

DCR011203P

Tape and Reel

Rails

SO-28

PDIP-18

SO-28

DCR011203U/1K

DCR011205P

Tape and Reel

Rails

PDIP-18

SO-28

DCR011205U/1K

DCR012403P

Tape and Reel

Rails

PDIP-18

SO-28

DCR012403U/1K

DCR012405P

Tape and Reel

Rails

PDIP-18

SO-28

DCR012405U/1K

Tape and Reel

NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /1K indicates 1000 devices per reel). Ordering 1000 pieces

of “DCR010503U/1K” will get a single 1000-piece Tape and Reel. (2) Available Q2 2000. (3) Available Q3 2000.

PIN CONFIGURATIONS

Top View

PDIP

V_S

18 SYNC

17 0V_IN

V_S

28 SYNC

27 0V_IN

26 0V_IN

DCR01

DCR01U

V_REC

0V_OUT

V_O

12 ERROR

11 ENABLE

10 DNC

V_REC12

0V_OUT13

V_O14

17 ERROR

16 ENABLE

15 DNC

PIN DEFINITION (PDIP)

PIN DEFINITION (SO)

PIN #

PIN NAME

DESCRIPTION

PIN #

PIN NAME

DESCRIPTION

V_S

Voltage Input

V_S

Voltage Input

No Connection

Rectified Output

Output Ground

Voltage Output

Do Not Connect

Voltage Input

V_REC

No Connection

Rectified Output

Output Ground

Voltage Output

Do Not Connect

0V_OUT

V_O

V_REC

V_OUT

V_O

DNC

ENABLE

ERROR

0V_IN

Output Voltage Enable

Error Flag Active Low

Input Ground

DNC

ENABLE

ERROR

0V_IN

Output Voltage Enable

Error Flag Active Low

Input Ground

SYNC

Synchronization Input

0V_IN

Input Ground

NOTE: (1) SO version available Q3 2000.

SYNC

Synchronization Input

DCR01

TYPICAL PERFORMANCE CURVES

At T_A= +25°C, V_S= 5V, I_O= 10mA, C_O= 0.1µF, unless otherwise specified.

DCR0105 OUTPUT VOLTAGE RIPPLE

DCR0105 OUTPUT NOISE (100MHz Bandwidth)

Load (%)

100

Load (%)

100

DCR010503P V_OUTvs LOAD

(V_IN= 5V)

DCR010503P EFFICIENCY

(V_IN= 5V)

3.305

3.3

85°C

3.295

3.29

–40°C

25°C

3.285

3.28

25°C

3.275

3.27

–40°C

3.265

90 100

Load (%)

DCR0105 SERIES INPUT CURRENT

DCR0105 SERIES INPUT

REFLECTED NOISE (100MHz Bandwidth)

CURRENT REFLECTED RIPPLE

500ns/div

DCR01

TYPICAL PERFORMANCE CURVES (Cont.)

At T_A= +25°C, V_S= 5V, I_O= 10mA, C_O= 0.1µF, unless otherwise specified.

DCR010503P LOAD TRANSIENT RESPONSE

Load Current

DCR010503P LOAD TRANSIENT RESPONSE

Load Current

Output Voltage

10µs/div

DCR010503P OUTPUT VOLTAGE NOISE

AT 100% LOAD (100MHz Bandwidth)

DCR010503P OUTPUT VOLTAGE RIPPLE

AT 100% LOAD (20MHz Bandwidth)

Load Current

Output Voltage

200ns/div

DCR010505P LOAD TRANSIENT RESPONSE

Load Current

DCR010505P LOAD TRANSIENT RESPONSE

Load Current

Output Voltage

10µs/div

DCR01

TYPICAL PERFORMANCE CURVES (Cont.)

At T_A= +25°C, V_S= 5V, I_O= 10mA, C_O= 0.1µF, unless otherwise specified.

DCR010505P OUTPUT VOLTAGE NOISE

AT 100% LOAD (100MHz Bandwidth)

DCR010505P OUTPUT VOLTAGE RIPPLE

AT 100% LOAD (20MHz Bandwidth)

200ns/div

The DCR01 overcomes this by allowing devices to be

synchronized to one another. Up to eight devices can be

synchronized by connecting the SYNC pins together, with

care being taken to minimize the capacitance of tracking.

FUNCTIONAL DESCRIPTION

OVERVIEW

The DCR01 series offers isolation from an unregulated

power supply operating from a choice of input voltages. The

DCR01’s provide a variety of regulated output voltages at a

nominal output power of 1W or above.

Significant stray capacitance on the SYNC pin will have the

effect of reducing the frequency of the internal oscillator. If

this is large, the DCR01 may be taken out with its optimized

operating parameters and saturation of the magnetics may

result, damaging the device.

POWER STAGE

If devices are synchronized, it should be noted that all

devices will draw maximum current simultaneously at start

up. This can cause the input voltage to dip. Should it fall

below the minimum input voltage, the devices may not start

up. A 2.2µF capacitor (low ESR) should be connected as

close to the device input pins as possible for the 5V input

devices and a 0.47µF capacitor for the 12V and 24V devices.

The input supply is chopped at a frequency of 400kHz

(internal oscillator divided by 2), which is used to drive the

center-tapped toroidal transformer.

RECTIFICATION

The transformer’s output is full wave rectified and smoothed

by the external capacitor connected to V_REC

If more than eight devices are required to be synchronized,

it is recommended that external synchronization be used.

Details are contained in Burr-Brown’s Application Bulletin

AB-153.

REGULATOR

The internal low drop-out regulator provides a well-regu-

lated output voltage, throughout the operating range of the

device.

CONSTRUCTION

The DCR01 is manufactured using the same technology as

standard IC packages. There is no substrate within the

package. The DCR01 is constructed using a driver IC, Low

Dropout Voltage Regulator, rectifier diodes and a wound

magnetic toroid, all mounted on a leadframe. The DCR01

requires no special PCB assembly processing, as there is no

solder within the package. The result is an isolated DC/DC

converter with inherently high reliability.

OSCILLATOR AND WATCHDOG

The DCR01 uses an internal saw-tooth generator to provide

the 800kHz on-board oscillator that is used to drive the

power switching circuit. The operation of the oscillator is

monitored by the watchdog, which will tri-state the output

driver circuit if the oscillator fails, or if the SYNC pin is

taken low, (shutdown mode). When the SYNC pin is re-

turned high, normal operation resumes.

ADDITIONAL FUNCTIONS

DISABLE/ENABLE

SYNCHRONIZATION

If more than one DCR01 is being used, beat frequencies and

other electrical interference can be generated. This is due to

the small variations in switching frequencies between the

converters.

The DCR01 can be disabled or enabled by driving the SYNC

pin using an open drain CMOS gate. If the SYNC pin is

DCR01

It is recommended that a 0.1µF low ESR capacitor is

connected close to the output pin and ground to reduce noise

on the output. The capacitor values listed are minimum

values. If lower ripple is required then the filter capacitor

should be increased in value to 0.47µF.

pulled low, the DCR01 will be disabled. The disable time

depends upon the external loading. The internal disable

function is implemented in 2µs. Removal of the pull down

will enable the DCR01.

Capacitance loading on the SYNC pin should be minimized

in order to prevent a reduction in the internal oscillator‘s

frequency. See Application Bulletin AB-153 External Syn-

chronization of the DCP01/02 Series of DC/DC Converters.

This document contains information on how to null the

effects of additional capacitance on the sync pin. The oscil-

lators frequency can be measured at V_REC, as this is the

fundamental frequency of the ripple component.

NOTE: As with all switching power supplies the best

performance is only obtained with low ESR capacitors

connected close to the switcher. If low ESR capacitors are

not used, the ESR will generate a voltage drop when the

capacitor is supplying the load power. Often a larger capaci-

tor is chosen for this purpose when a low ESR smaller

capacitance would perform as well.

PCB LAYOUT

OUTPUT ENABLE/DISABLE

RIPPLE AND NOISE

The regulated output of the DCR01 can be disabled by

pulling the ENABLE pin low. Holding the ENABLE pin

high enables the regulated output voltage, thus allowing the

output to be controlled from the isolated side.

Careful consideration should be given to the layout of the

PCB in order for the best results to be obtained.

The DCR01 is a switching power supply and as such can

place high peak current demands on the input supply. In

order to avoid the supply falling momentarily during the fast

switching pulses, ground and power planes should be used

to track the power to the input of DCR01, this will also serve

to reduce noise on the circuit. If this is not possible, the

supplies must be connected in a star formation, with the

tracks made as wide as possible.

ERROR FLAG

The DCR01 has an Error pin which provides a ‘power good’

flag, as long as the internal regulator is in regulation.

DECOUPLING

If the SYNC pin is being used, the tracking between device

SYNC pins should be short to avoid stray capacitance. If the

SYNC pin is not being used it is advisable to place a guard

ring (connected to input ground) around this pin to avoid any

noise pick up.

Ripple Reduction

Due to the very low forward resistance of the DMOS

switching transistors, high current demands are placed upon

the input supply for a short time. By using a good quality

low Equivalent Series Resistance (ESR) capacitor of 2.2µF

(minimum) for the 5V input devices and a 0.47µF capacitor

for the 12V and 24V devices, placed close to the IC supply

input pins, the effects on the power supply can be mini-

mized.

The output should be taken from the device using ground

and power planes. This will ensure minimum losses.

A good quality low ESR capacitor placed as close as

practicable across the input will reduce reflected ripple and

ensure a smooth start up.

The high switching frequency of 400kHz allows relatively

small values of capacitors to be used for filtering the recti-

fied output voltage. A good quality low ESR capacitor of

1µF placed close to the V_RECpin and output ground will

reduce the ripple.

A good quality low ESR capacitor placed as close as

practicable across the rectifier output terminal and output

ground will give the best ripple and noise performance.

THERMAL MANAGEMENT

It is not recommended that the DCR01 be fitted using an

IC socket as this will degrade performance.

Due to the high power density of this device, it is advisable

to provide a ground plane on the output. The output regula-

tor is mounted on a copper leadframe, and a ground plane

will serve as an efficient heatsink.

The output at V_RECis full wave rectified and produces a

ripple of 800kHz.

DCR01

V_IN

V_O1

V_S

V_OUT

(1)

C_IN

C_OUT= 0.1µF

DCR

V_REC

0 V_OUT

C_FILTER= 1µF

NOTE: (1) 2.2µF capacitor with low ESR for 5V

devices and 0.47µF for 12V and 24V devices.

FIGURE 1. DCR01 with a Single Output.

V_IN

V_O1

V_S

V_OUT

(1)

C_IN

C_OUT= 0.1µF

SYNC

DCR

V_REC

0 V_OUT

C_FILTER= 1µF

0 V_OUT

V_IN

V_O2

V_S

V_OUT

(1)

C_IN

C_OUT= 0.1µF

SYNC

DCR

V_REC

_FILTER= 1µF

0 V_OUT

NOTE: (1) 2.2µF capacitor with low ESR for 5V

devices and 0.47µF for 12V and 24V devices.

FIGURE 2. Self-Synchronizing DCR01s with a Dual Output.

DCR01

DCR012405P相关文章

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DCR012405P产品参数

型号:	DCR012405P
生命周期：	Transferred
IHS 制造商：	BURR-BROWN CORP
包装说明：	PLASTIC, DIP-18
Reach Compliance Code：	unknown
风险等级：	5.73
Is Samacsys：	N
模拟集成电路 - 其他类型：	DC-DC REGULATED POWER SUPPLY MODULE
最大输入电压：	26.4 V
最小输入电压：	21.6 V
标称输入电压：	24 V
JESD-30 代码：	R-PDIP-T10
最大负载调整率：	2.5%
功能数量：	1
输出次数：	1
端子数量：	10
最高工作温度：	85 °C
最低工作温度：	-40 °C
最大输出电压：	5.1 V
最小输出电压：	4.9 V
标称输出电压：	5 V
封装主体材料：	PLASTIC/EPOXY
封装形状：	RECTANGULAR
封装形式：	IN-LINE
认证状态：	Not Qualified
表面贴装：	NO
温度等级：	INDUSTRIAL
端子形式：	THROUGH-HOLE
端子位置：	DUAL
最大总功率输出：	1 W
微调/可调输出：	NO
Base Number Matches：	1

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