PT7722

更新时间： 2024-02-16 12:53:50

品牌	Logo	应用领域
德州仪器 - TI		输入元件
页数	文件大小	规格书
4页	201K
描述
17 AMP 12V INPUT “BIG-HAMMER II” PROGRAMMABLE ISR

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技术参数
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PT7722 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	SIP
包装说明：	,	针数：	27
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	1 week
风险等级：	5.67	模拟集成电路 - 其他类型：	SWITCHING REGULATOR
控制模式：	VOLTAGE-MODE	最大输入电压：	14 V
最小输入电压：	11 V	标称输入电压：	12 V
JESD-30 代码：	R-MSMA-T27	湿度敏感等级：	1
功能数量：	1	端子数量：	27
最高工作温度：	85 °C	最低工作温度：
最大输出电流：	17 A	封装主体材料：	METAL
封装形状：	RECTANGULAR	封装形式：	MICROELECTRONIC ASSEMBLY
峰值回流温度（摄氏度）：	215	认证状态：	Not Qualified
表面贴装：	NO	切换器配置：	SINGLE
最大切换频率：	400 kHz	技术：	HYBRID
温度等级：	OTHER	端子形式：	THROUGH-HOLE
端子位置：	SINGLE	处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

PT7722 数据手册

For assistance or to order, call (800) 531-5782

Revised 1/13/99

P T 7 7 2 0 S e r i e s

Application Notes

Mechanical Outline

Product Selector Guide

17 AMP 12V INPUT “BIG-HAMMER II” PRO-

GRAMMABLE ISR

The PT7720 series is a new +12V input,

17A output, high-performance Integrated

Switching Regulator (ISR) housed in a 27-

pin SIP package. The 17A capability allows

easy integration of the latest high-speed,

low-voltage µPs and bus drivers into +12V

distributed power systems.

The PT7720 series has been designed

to work in parallel with one or more of the

PT7748 current boosters for increased I_out

in increments of 17A.

The output voltage of the PT7721 can

be easily programmed from 1.3V to 3.5V

with a 5 bit input compatible with Intel’s

Pentium IIProcessor. A differential re-

mote sense is also provided which

automatically compensates for any voltage

drop from the ISR to the load.

1200µF of output capacitance is re-

quired for proper operation.

Pin-Out Information

Features

Pin Function

• +12V bus input

• 5-bit Programmable:

1.3V to 3.5V or

VID0

VID1

VID2

VID3

STBY* - Stand-by

VID4

V_in

15 GND

16 GND

17 GND

Standard Application

PROGRAMMING PINS

4.5V to 7.6V

VID0

VID1

VID2

VID3

18 GND

19 GND

20 V_out

21 V_out

22 V_out

23 V_out

24 V_out

25 V_out

REMOTE SENSE (+)

• High Efficiency

• Differential Remote Sense

• 27-pin SIP Package

• Parallelable with PT7748

17A current boosters

VID4

V_IN

V_OUT

20 - 25

PT7720

1µH

V_in

C_IN

C_OUT

LOAD

V_in

SYNC OUT

GND

STBY*

REMOTE SENSE (-)

Remote Sense Gnd

GND

Remote Sense V_out

= Required 560µF electrolytic

(See input filter note)

27 Sync Out

For STBY* pin:

open = output enabled

ground = output disabled.

= Required 1200µF electrolytic

out

L1 = Optional 1µH input choke

Specifications

PT7720 SERIES

Characteristics

(T_a= 25°C unless noted)

Symbols

Conditions

Min

Typ

Max

Units

Output Current

I_o

T_a= +60°C, 200 LFM, pkg N, V_o≤ 5V

T_a= +25°C, natural convection, V_o≤ 5V

0.1^*

—

17^**

Output Power

P_o

T_a= +60°C, 200 LFM, pkg N, V_o≥ 5V

T_a= +25°C, natural convection, V_o≥ 5V

—

Watts

Input Voltage Range

V_in

0.1A ≤ I_o≤ 17A

11.0

—

14.0

Output Voltage Tolerance

∆V_o

V_in= +12V, I_o= 17A

(PT7721)

(PT7722)

Vo-0.03

—

Vo+0.03

±2.0%

0°C ≤ T_a≤ +60°C

±1.0%

% Vo

Line Regulation

Load Regulation

V_oRipple/Noise

Reg_line

Reg_load

V_n

11V ≤ V_in≤ 14V, I_o= 17A (Using remote sense)

V_in= +12V, 0.1 ≤ I_o≤ 17A (Using remote sense)

—

±5

±10

V_in= +12V, I_o= 17A

(PT7721)

(PT7722)

—

mVpp

100

Transient Response

with C_out= 1200µF

t_tr

I_ostep between 7.5A and 15A

V_oover/undershoot

—

100

200

—

µSec

V_os

Efficiency

V_in= +12V, I_o= 10A

V_o= 5.0V

V_o= 3.3V

V_o= 2.5V

V_o= 1.5V

—

Switching Frequency

ƒ_o

11V ≤ V_in≤ 14V

0.1A ≤ I_o≤ 17A

300

350

—

400

+85

kHz

°C

Absolute Maximum

Operating Temperature Range

T_a

—

Recommended Operating

Temperature Range

T_a

T_s

Forced Air Flow = 200 LFM

—

+65^***

+125

—

°C

G’s

At V_in

—

I_o= 12A

= 12V,

Storage Temperature

Mechanical Shock

-40

—

Per Mil-STD-883D, Method 2002.3 , 1 msec,

Half Sine, mounted to a fixture

TBD

Mechanical Vibration

Weight

Per Mil-STD-883D, Method 2007.2,

20-2000 Hz, Soldered in a PC board

Vertical/Horizontal

—

TBD

—

G’s

—

51/64

grams

ISR-will operate down to no load with reduced specifications. Please note that this product is not short-circuit protected.

** The PT7720 series can be easily paralleled with one or more of the PT7748 Current Boosters to provide increased output current in increments of 17A.

*** See Safe Operating Area chart.

Output Capacitors: The PT7720 series requires a minimum output capacitance of 1200µF for proper operation. Do not use Oscon type capacitors. The maximum allowable output capacitance

Is (57,000 ÷ Vout)µF, or 15,000µF, whichever is less.

Input Filter: An input inductor is optional for most applications. The input inductor must be sized to handle 7ADC with a typical value of 1µH. The input capacitance must be rated for a

minimum of 4.0 Arms of ripple current when operated at maximum output current and maximum output voltage. Contact an applications engineer for input capacitor selection for applications

at other output voltages and output currents.

Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com

12 3 4

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