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产品型号UCC2807DTR-1的概述

UCC2807DTR-1 概述 UCC2807DTR-1 是一款由德州仪器（Texas Instruments）公司生产的高性能功率因数校正（PFC）控制器。其设计旨在提高开关电源的效率，尤其是在电源适配器和工业电源等应用中，能够有效减少电能损耗和提高电能质量。UCC2807DTR-1 采用高效的双线性控制策略，能够在各种负载条件下实现稳定的电流控制。该芯片的工作原理基于电流模式控制，这种控制方式具有较快的动态响应和较强的抗干扰能力。UCC2807DTR-1 具备多种保护功能，包括过压保护、过流保护和芯片温度保护等，确保在各种恶劣环境下能正常工作。同时，该芯片也支持相位控制，能够在并联应用中实现均流分配，提高了系统的可靠性。 UCC2807DTR-1 的详细参数 1. 输入电压范围: 180V ~ 265V AC 2. 输出电流: 最大 1A 3. 工作频率: 100 kHz，具有调...

产品型号UCC2807DTR-1的Datasheet PDF文件预览

application

INFO

UCC1807-1/-2/-3

UCC2807-1/-2/-3

UCC3807-1/-2/-3

available

Programmable Maximum Duty Cycle PWM Controller

FEATURES

DESCRIPTION

User Programmable Maximum PWM

Duty Cycle

The UCC3807 family of high speed, low power integrated circuits contains

all of the control and drive circuitry required for off-line and DC-to-DC fixed

frequency current mode switching power supplies with minimal external

parts count.

100mA Startup Current

Operation to 1MHz

These devices are similar to the UCC3800 family, but with the added fea-

ture of a user programmable maximum duty cycle. Oscillator frequency and

maximum duty cycle are programmed with two resistors and a capacitor.

The UCC3807 family also features internal full cycle soft start and internal

leading edge blanking of the current sense input.

Internal Full Cycle Soft Start

Internal Leading Edge Blanking of

Current Sense Signal

1A Totem Pole Output

The UCC3807 family offers a variety of package options, temperature

range options, and choice of critical voltage levels. The family has UVLO

thresholds and hysteresis levels for off-line and battery powered systems.

Thresholds are shown in the table below.

Part Number

UCCx807-1

UCCx807-2

UCCx807-3

Turn-on Threshold

Turn-off Threshold

Packages

N, D

7.2V

12.5V

4.3V

6.9V

8.3V

4.1V

N, D, PW

BLOCK DIAGRAM

UDG-95001-1

SLUS163 - JUNE 1997

UCC1807-1/-2/-3

UCC2807-1/-2/-3

UCC3807-1/-2/-3

CONNECTION DIAGRAMS

ABSOLUTE MAXIMUM RATINGS

Supply Voltage (I_DD10mA). . . . . . . . . . . . . . . . . . . . . . . 13.5V

Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA

OUT Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1A

Analog Inputs (FB, CS) . . . . . . . . . . . . . –0.3V to (VDD + 0.3V)

Power Dissipation at T_A+25°C (N or J packages) . . . . . . . . 1W

Power Dissipation at T_A+25°C (D package) . . . . . . . . . . 0.65W

Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Junction Temperature. . . . . . . . . . . . . . . . . . . –65°C to +150°C

Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300°C

DIL-8, SOIC-8, TSSOP-8 (Top View)

J, N, D or PW Packages

All currents are positive into, negative out of the specified ter-

minal. Consult Packaging Section of Databook for thermal limi-

tations and considerations of packages.

ORDERING INFORMATION

UCC

807

–

UVLO Threshold

Package

Temperature Range

ELECTRICAL CHARACTERISTICS:Unless otherwise stated these specifications apply for T_A= –55°C to +125°C for

UCC1807-1/-2/-3; –40°C to +85°C for UCC2807-1/-2/-3; and 0°C to +70°C for UCC3807-1/-2/-3; VDD = 10V (Note 6), R_A= 12kW,

R_B= 4.7kW, CT = 330pF, 1.0mF capacitor from VDD to GND, T_A= T_J.

PARAMETER

Oscillator Section Section

Frequency

TEST CONDITIONS

MIN

TYP

MAX UNITS

175

202

2.5

228

kHz

Temperature Stability

Amplitude

(Note 5)

(Note 1)

1/3VDD

Error Amplifier Section

Input Voltage

COMP = 2.0V

1.95

–1

2.00

2.05

Input Bias Current

Open Loop Voltage Gain

COMP Sink Current

COMP Source Current

PWM Section

2.5

FB = 2.2V, COMP = 1.0V

FB = 1.3V, COMP = 4.0V

0.3

–0.2

–0.5

Maximum Duty Cycle

Minimum Duty Cycle

Current Sense Section

Gain

COMP = 0V

(Note 2)

1.1

0.9

1.65

1.0

1.8

1.1

V/V

Maximum Input Signal

Input Bias Current

CS Blank Time

COMP = 5.0V (Note 3)

–200

200

150

1.6

100

1.5

1.1

Overcurrent Threshold

COMP to CS Offset

Output Section

1.4

CS = 0V

0.55

1.65

OUT Low Level

I = 100mA

0.4

OUT High Level

I = –100mA, VDD - OUT

CL = 1nF (Note 5)

Rise/Fall Time

100

Undervoltage Lockout Section

UCC1807-1/-2/-3

UCC2807-1/-2/-3

UCC3807-1/-2/-3

ELECTRICAL CHARACTERISTICS:Unless otherwise stated these specifications apply for T_A= –55°C to +125°C for

UCC1807-1/-2/-3; –40°C to +85°C for UCC2807-1/-2/-3; and 0°C to +70°C for UCC3807-1/-2/-3; VDD = 10V (Note 6), R_A= 12kW,

R_B= 4.7kW, CT = 330pF, 1.0mF capacitor from VDD to GND, T_A= T_J.

PARAMETER

Start Threshold

TEST CONDITIONS

UCCx807-1 (Note 4)

MIN

6.6

11.5

4.1

6.3

7.6

3.9

0.1

3.5

0.1

TYP

7.2

12.5

4.3

6.9

8.3

4.1

0.3

4.2

0.2

MAX UNITS

7.8

13.5

4.5

7.5

9.0

4.3

0.5

5.1

0.3

UCCx807-2

UCCx807-3

UCCx807-1 (Note 4)

UCCx807-2

UCCx807-3

UCCx807-1

UCCx807-2

UCCx807-3

Minimum Operating Voltage After Start

Hysteresis

Soft Start Section

COMP Rise Time

Overall Section

Startup Current

FB = 1.8V, From 0.5V to 4.0V

VDD < Start Threshold (UCCx807-1,-3)

VDD < Start Threshold (UCCx807-2)

FB = 0V, CS = 0V, No Load (Note 7)

0.1

0.15

1.3

0.2

0.25

2.1

Operating Supply Current

VDD Zener Shunt Voltage

Shunt to Start Difference

_DD= 10mA

12.0

0.5

13.5

1.0

15.0

Note 1: Measured at TRIG; signal minimum = 1/3 VDD, maximum = 2/3 VDD.

Note 2: Gain is defined by: A

^COMP, 0 V_CS0.8V

Note 3: Parameter measured at trip point of latch with FB at 0V.

Note 4: Start Threshold and Zener Shunt thresholds track one another.

Note 5: Ensured by design. Not 100% tested in production.

Note 6: Adjust VDD above the start threshold before setting at 10V for UCC3807-2.

Note 7: Does not include current in external timing RC network.

PIN DESCRIPTIONS

COMP: COMP is the output of the error amplifier and the affected by the leading edge blanking and the CS to

input of the PWM comparator. The error amplifier in the OUT propagation delay.

UCC3807 is a low output impedance, 2MHz operational

The overcurrent comparator is only intended for fault

amplifier. COMP can both source and sink current. The

sensing. Exceeding the overcurrent threshold causes a

error amplifier is internally current limited, which allows

soft start cycle.

zero duty cycle by externally forcing COMP to GND.

FB: The inverting input to the error amplifier. For best

The UCC3807 family features built-in full cycle soft start.

stability, keep connections to FB as short as possible and

Soft start is implemented as a clamp on the maximum

stray capacitance as small as possible.

COMP voltage.

GND: Reference ground and power ground for all func-

tions of the part.

CS: Current sense input. There are two current sense

comparators on the chip, the PWM comparator and an

OUT: The output of a high current power driver capable

of driving the gate of a power MOSFET with peak cur-

rents exceeding 1A. OUT is actively held low when VDD

is below the UVLO threshold.

overcurrent comparator.

The UCC3807 also contains a leading edge blanking cir-

cuit, which disconnects the external CS signal from the

current sense comparator during the 100ns interval im-

mediately following the rising edge of the signal at the

OUT pin. In most applications, no analog filtering is re-

quired on CS. Compared to an external RC filtering tech-

nique, leading edge blanking provides a smaller effective

CS to OUT propagation delay. Note, however, that the

minimum non-zero on-time of the OUT signal is directly

The high current power driver consists of MOSFET out-

put devices in a totem pole configuration. This allows the

output to switch from VDD to GND. The output stage

also provides a very low impedance which minimizes

overshoot and undershoot. In most cases, external

Schottky clamp diodes are not required.

UCC1807-1/-2/-3

UCC2807-1/-2/-3

UCC3807-1/-2/-3

PIN DESCRIPTIONS (cont.)

TRIG/DISCH: Oscillator control pins. Trig is the oscillator For best performance, keep the lead from C_Tto GND as

timing input, which has an RC-type charge/discharge sig- short as possible. A separate ground connection for C_Tis

nal controlling the chip’s internal oscillator. DISCH is the

pin which provides the low impedance discharge path for

the external RC network during normal operation. Oscil-

lator frequency and maximum duty cycle are computed

as follows:

desirable. The minimum value of R_Ais 10kW, the mini-

mum value of R_Bis 2.2kW, and the minimum value of C_T

is 47pF.

VDD: The power input connection for this device. Total

VDD current is the sum of quiescent current and the av-

erage OUT current. Knowing the operating frequency

and the MOSFET gate charge (Qg), average OUT cur-

rent can be calculated from

1.4

frequency

R_A2R_BC_T

R_AR_B

duty cycle

R_A2R_B

I_OUT= Qg F, where F is frequency.

To prevent noise problems, bypass VDD to GND with a

ceramic capacitor as close to the chip as possible in par-

allel with an electrolytic capacitor.

as shown in Figure 1.

UDG-95002-1

Figure 1. Oscillator Block Diagram

APPLICATIONS INFORMATION

The circuit shown in Fig. 2 illustrates the use of the

UCC3807 in a typical off-line application. The 100W,

200kHz, universal input forward converter produces a

regulated 12VDC at 8 Amps. The programmable maxi-

mum duty cycle of the UCC3807 allows operation down

to 80VRMS and up to 265VRMS with a simple RCD

clamp to limit the MOSFET voltage and provide core re-

set. In this application the maximum duty cycle is set to

about 65%. Another feature of the design is the use of a

flyback winding on the output filter choke for both boot-

strapping and voltage regulation. This method of loop clo-

sure eliminates the optocoupler and secondary side

regulator, common to most off-line designs, while provid-

ing good line and load regulation.

T1:

Core

Primary:

Secondary:

L1:

Magnetics Inc. #P-42625-UG (ungapped)

28 turns of 2x #26AWG

6 turns of 50x0.2mm Litz wire

Core:

Magnetics Inc. #P-42625-SG-37 (0.020”

gap)

13 turns of 2x #18AWG

Main Winding:

Second Winding: 11 turns of #26AWG

Magnetics Inc.

900 E. Butler Road

P.O. Box 391

Butler, PA 16003

Tel: (412) 282-8282

Fax: (412) 282-6955

UCC1807-1/-2/-3

UCC2807-1/-2/-3

UCC3807-1/-2/-3

APPLICATIONS INFORMATION (cont.)

UDG-96174

Figure 2. Typical Off-line Application Using UCC3807-2

PACKAGE OPTION ADDENDUM

www.ti.com

4-Nov-2005

PACKAGING INFORMATION

Orderable Device

UCC2807D-1

Status ⁽¹⁾

ACTIVE

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

SOIC

75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

UCC2807D-2

SOIC

PDIP

TSSOP

SOIC

PDIP

75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

UCC2807D-3

75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

UCC2807DTR-1

UCC2807DTR-1G4

UCC2807DTR-2

UCC2807DTR-2G4

UCC2807DTR-3

UCC2807DTR-3G4

UCC2807N-1

2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

50 Green (RoHS & CU NIPDAU Level-NC-NC-NC

no Sb/Br)

UCC2807N-2

50 Green (RoHS & CU NIPDAU Level-NC-NC-NC

no Sb/Br)

UCC2807PW-3

UCC2807PWTR-3

UCC3807D-1

90 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

2000 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

UCC3807D-2

75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

UCC3807D-2G4

UCC3807D-3

75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

UCC3807DTR-1

UCC3807DTR-2

UCC3807DTR-2G4

UCC3807DTR-3

UCC3807DTR-3G4

UCC3807N-1

2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR

no Sb/Br)

50 Green (RoHS & CU NIPDAU Level-NC-NC-NC

no Sb/Br)

UCC3807N-2

50 Green (RoHS & CU NIPDAU Level-NC-NC-NC

no Sb/Br)

UCC3807N-3

50 Green (RoHS & CU NIPDAU Level-NC-NC-NC

no Sb/Br)

Addendum-Page 1

PACKAGE OPTION ADDENDUM

www.ti.com

4-Nov-2005

Orderable Device

UCC3807N-3G4

UCC3807PWTR-3

Status ⁽¹⁾

ACTIVE

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

PDIP

50 Green (RoHS & CU NIPDAU Level-NC-NC-NC

no Sb/Br)

PREVIEW

TSSOP

2000

TBD

Call TI

⁽¹⁾The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in

a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

(2)

Eco Plan

The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS

no Sb/Br)

please check

http://www.ti.com/productcontent for the latest availability information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.

Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements

for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered

at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.

Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame

retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is

provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the

accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take

reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on

incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited

information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI

to Customer on an annual basis.

Addendum-Page 2

MECHANICAL DATA

MPDI001A – JANUARY 1995 – REVISED JUNE 1999

P (R-PDIP-T8)

PLASTIC DUAL-IN-LINE

0.400 (10,60)

0.355 (9,02)

0.260 (6,60)

0.240 (6,10)

0.070 (1,78) MAX

0.325 (8,26)

0.300 (7,62)

0.020 (0,51) MIN

0.015 (0,38)

Gage Plane

0.200 (5,08) MAX

Seating Plane

0.010 (0,25) NOM

0.125 (3,18) MIN

0.100 (2,54)

0.021 (0,53)

0.430 (10,92)

MAX

0.010 (0,25)

0.015 (0,38)

4040082/D 05/98

NOTES: A. All linear dimensions are in inches (millimeters).

B. This drawing is subject to change without notice.

C. Falls within JEDEC MS-001

For the latest package information, go to http://www.ti.com/sc/docs/package/pkg_info.htm

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

MECHANICAL DATA

MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999

PW (R-PDSO-G**)

PLASTIC SMALL-OUTLINE PACKAGE

14 PINS SHOWN

0,30

0,19

0,10

0,65

0,15 NOM

4,50

4,30

6,60

6,20

Gage Plane

0,25

0°–8°

0,75

0,50

Seating Plane

0,10

0,15

0,05

1,20 MAX

PINS **

DIM

3,10

2,90

5,10

4,90

5,10

4,90

6,60

6,40

7,90

9,80

9,60

A MAX

A MIN

7,70

4040064/F 01/97

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.

C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.

D. Falls within JEDEC MO-153

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,

enhancements, improvements, and other changes to its products and services at any time and to discontinue

any product or service without notice. Customers should obtain the latest relevant information before placing

orders and should verify that such information is current and complete. All products are sold subject to TI’s terms

and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in

accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI

deems necessary to support this warranty. Except where mandated by government requirements, testing of all

parameters of each product is not necessarily performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for

their products and applications using TI components. To minimize the risks associated with customer products

and applications, customers should provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,

in which TI products or services are used. Information published by TI regarding third-party products or services

does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.

Use of such information may require a license from a third party under the patents or other intellectual property

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UCC2807DTR-1产品参数

型号:	UCC2807DTR-1
Brand Name：	Texas Instruments
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Active
零件包装代码：	SOIC
包装说明：	SOP, SOP8,.25
针数：	8
Reach Compliance Code：	compliant
ECCN代码：	EAR99
HTS代码：	8542.39.00.01
风险等级：	5.17
Is Samacsys：	N
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER
控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION
最大输入电压：	12 V
最小输入电压：	7.5 V
标称输入电压：	10 V
JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e4
长度：	4.9 mm
湿度敏感等级：	2
功能数量：	1
端子数量：	8
最高工作温度：	85 °C
最低工作温度：	-40 °C
最大输出电流：	1 A
封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP
封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified
座面最大高度：	1.58 mm
子类别：	Switching Regulator or Controllers
最大供电电流 (Isup)：	2.1 mA
标称供电电压 (Vsup)：	10 V
表面贴装：	YES
切换器配置：	BOOST
最大切换频率：	1000 kHz
技术：	BICMOS
温度等级：	INDUSTRIAL
端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：	GULL WING
端子节距：	1.27 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3.91 mm
Base Number Matches：	1

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