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DP9900LP 14.2*21.2*8mm 12V0.84A或5V1 .4A

DP9900LP 14.2*21.2*8mm 12V0.84A或5V1 .4A
标签: DP9900LP

5V 12V可选

DESCRIPTION 

PD (Powered Device)  Integrated  Module  (Isolation  Type) 

FEATURES

Fully IEEE 802.3af compliant

12.95 watt output load

IEEE Power class programmable (Green)

1500 Volt DC isolation (Input to Output)

5V, 12V,24VDC output voltage models

Compact package minimum PCB footprint

Minimal external components required

Overload and short circuit protection

Wide input voltage (36V to 57V DC)

Adjustable output voltage

Support PoE applications in both of Fast / Gigabit Ethernet environments.

Low output ripple and noise

Low cost

 

APPLICATION AREAS

Security and alarm systems

Voice over IP phones

Access control systems

IP Cameras

Displays, Net Monitors

Public address systems

Wireless access points

Environmental control

Telemetry

Remote environmental monitoring

 

1  Product Overview

1.1  DP9900 Product Selector

 

Part Number

Nominal OutputVoltage

 

Output Power

70˚C

85˚C

DP9905M

5.0V

9 Watts

6 Watts

DP9912M

12.0V

12 Watts

9 Watts

DP9924M

24.0V

12 Watts

11 Watts

DP9905LP

5.0V

7 Watts

4.5 Watts

DP9912LP

12.0V

10 Watts

6 Watts

 

 

 

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1.2Pin Description

 

Pin #

Name

Description

1

 

+VDC

DC Output.This pin provides the regulated output from the DC/DC converter.

2

3

-VDC

DC Return.This pin is the return path for the +VDC output.

 

4

 

ADJ

Output Adjust.The output voltage can be adjusted from is nominal value, by connecting an external resistor from this pin to either the +VDC pin or the -VDC pin.

5

 

VIN+

Direct Input +. This pin connects to the positive (+) output of the input bridge rectifiers.

6

7

 

VIN-

Direct Input -. This pin connects to the negative (-) output of the input bridge rectifiers.

8

 

Table 2: Pin Description

2 Functional Description

 

2.1Typical Connections 

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Figure 3: Typical Connection Diagram

 

BR1,BR2=MB6S;D1=SMAJ58A;RB=  I Load min

 

 

 

2.2  Output Voltage Adjustment

The DP9900 series has an OADJ pin, which allows the output voltage to be increased or decreased.

 Figure4 shows how the ADJ pin is connected. 

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Figure4: Output Adjustment

 

 

Reducing the output voltage, connect R between ADJ and +VDC

Value of R

DP9905 output

DP9912 Output

DP9924 Output

Open Circuit

5.00V

12.07V

23.93V

0 Ohms

4.48V

10.0V

19.85V

100K

4.76V

11.15V

21.85V

470k

4.92V

11.76V

23.23V

 

Increasing the output voltage, connect R between ADJ and -VDC

Value of R

DP9905 output

DP9912 output

DP9924 Output

Open Circuit

5.00V

12.07V

23.93V

0 Ohms

5.66V

12.75V

24.6V

100K

5.27V

12.34V

24.2V

470k

5.08V

12.16V

24.01V

Table 3: Output Adjustment Resistor (R) Value

 

3 Electrical Characteristics

3.1Absolute Maximum Ratings

 

 

Parameter

Symbol

Min

Max

Units

1

DC Supply Voltage

VCC

-0.3

60

V

2

DC Supply Voltage Surge for 1ms

VSURGE

-0.6

80

V

3

Storage Temperature

TS

-40

+100

˚C

 

 

3.2Recommended  Operating Conditions

 

Parameter

Min

Typ

Max

Units

1

Input Supply Voltage

36

48

57

V

2

Under Voltage Lockout

30

 

36

V

3

Input Curren

 

350

400

mA

4

Operating Temperature

-40

25

85

5

IEEE 802.3af

Class 0

 

 

 

 

 

 

 

 

 

 

3.3DC Electrical Characteristics

 

 

 

DC Characteristic

Variant

Sym

Min

Typ1

Max

Units

 

1

 

Nominal Output Voltage

DP9924

 

+VDC

23.5

24

24.5

 

V

DP9912

11.6

12

12.4

DP9905

4.75

5

5.25

 

 

2

 

Minimum Load2

DP9924

 

 

ILOAD

20

 

 

 

 

mA

DP9912

40

DP9905

100

 

DC Characteristic

Variant

Sym

Min

Typ1

Max

Units

 

 

3

 

 

Output Current

(VIN = 48V)

DP9924M

 

 

Iout

 

0.5

 

 

 

A

DP9912M

1.0

DP9912LP

0.8

DP9905M

1.8

DP9905LP

1.4

 

 

4

 

Line Regulation

DP9924

 

VLINE

 

0.15

 

 

%

DP9912

0.05

DP9905

0.05

 

5

 

Load Regulation –

Min to Max (VIN = 48V)

DP9924

 

VLOAD

 

0.15

 

 

%

DP9912

0.1

DP9905

0.1

 

 

 

6

 

 

Output Ripple and Noise5@ Max load

DP9924M

 

 

 

VRN

 

TBD

 

 

 

 

mVp-p

DP9912M

146mV

DP9912LP

198mV

DP9905M

124mV

DP9905LP

TBD

 

 

 

7

 

 

 

Peak Efficiency

DP9924M

 

 

 

EFF

 

87

 

 

 

 

%

DP9912M

DP9912LP

86

DP9905M

83

DP9905LP

8

Short-Circuit Duration3

 

TSC

 

 

sec

9

Isolation Voltage (I/O) - Impulse Test

 

VISO

 

 

1500

VPK

Note 1: Typical figures are at 25°C with a nominal 48V supply and are for design aid only.  Not Guaranteed

Note 2: The module can emit an audible noise, if operated at less than the stated minimum ILOAD and cause the PSE to fail its MPS.

Note 3: >200mohm short due to thermal limitation.

 

 

 

4  PackDPe

4.1 DP9900M

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4.2 DP9900LP

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