Description
PD (Powered Device) Integrated Module (Isolation Type)
FEATURES
l § Fully IEEE 802.3af compliant
l § 12.95 watt output load
l § IEEE Power class programmable (Green)
l § 1500 Volt DC isolation (Input to Output)
l § 5V, 12V ,24V DC output voltage models
l § Compact package minimum PCB footprint
l § Minimal external components required
l § Overload and short circuit protection
l § Wide input voltage (36V to 57V DC)
l § Adjustable output voltage
l § Support PoE applications in both of Fast / Gigabit Ethernet environments.
l § Low output ripple and noise
l § Low cost
APPLICATION AREAS
l § Security and alarm systems
l § Voice over IP phones
l § Access control systems
l § IP Cameras
l § Displays, Net Monitors
l § Public address systems
l § Wireless access points
l § Environmental control
l § Telemetry
l § Remote environmental monitoring
1 Product Overview
1.1 DP9900 Product Selector
| Part Number | Nominal Output Voltage
|
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 |
1.2 Pin 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 |
Figure 4: 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 |
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