89H24NT24G2ZBHLI IDT, 89H24NT24G2ZBHLI Datasheet - Page 21

• Manufacturer Part Number: 89H24NT24G2ZBHLI
• Description: Peripheral Drivers & Components - PCIs
• Manufacturer: IDT

Specifications of 89H24NT24G2ZBHLI

• Part # Aliases: IDT89H24NT24G2ZBHLI

Thermal Considerations
Power Consumption
(and also listed below).
Table 16 (and also listed below).
tion that is relevant to the thermal performance of the PES24NT24G2 switch.
x8/x8/x1/x1/x1/
x1/x1/x1/x1/x1/
x8/x8/x1/x1/x1/
x1/x1/x1/x1/x1/
Typical power is measured under the following conditions: 25°C Ambient, 35% total link usage on all ports, typical voltages defined in Table 16
Maximum power is measured under the following conditions: 70°C Ambient, 85% total link usage on all ports, maximum voltages defined in
This section describes thermal considerations for the PES24NT24G2 (19mm
Number of Active
(Half Swing)
(Full Swing)
Lanes per Port
Note 1: The above power consumption assumes that all ports are functioning at Gen2 (5.0 GT/S) speeds. Power consumption can be
reduced by turning off unused ports through software or through boot EEPROM. Power savings will occur in V
V
off port is close to zero. For example, if 3 ports out of 16 are turned off, then the power savings for each of the above three power rails can be
calculated quite simply as 3/16 multiplied by the power consumption indicated in the above table.
Note 2: Using a port in Gen1 mode (2.5GT/S) results in approximately 18% power savings for each power rail: V
V
DD
DD

Symbol
JA(effective)
PETA. Power savings can be estimated as directly proportional to the number of unused ports, since the power consumption of a turned-
PETA.
T
T
A(max)
J(max)


P
JB
JC
Watts
Watts
mA
mA
Effective Thermal Resistance, Junction-to-Ambient
1.0V
Core Supply
Typ
2540
2540
2.54
2.54
Thermal Resistance, Junction-to-Board
Thermal Resistance, Junction-to-Case
Table 19 Thermal Specifications for PES24NT24G2, 19x19 mm FCBGA324 Package
Power Dissipation of the Device
1.1V
Junction Temperature
Ambient Temperature
Max
3400
3400
3.74
3.74
Parameter
1.0V
PCIe Analog
Typ
1384
1190
1.38
1.19
Table 18 PES24NT24G2 Power Consumption
Supply
1.1V
Max
1570
1350
1.73
1.49
2.5V
PCIe Analog
21 of 35
High Supply
Typ
0.46
0.46
184
184
Value
2.75V
2
16.8
10.1
6.82
Max
125
9.2
4.1
0.3
0.56
0.56
70
85
205
205
FCBGA324 package). The data in Table 19 below contains informa-
1.0V
Typ
0.58
0.30
578
301
Transmitter
Units
Supply
Watts
o
o
o
o
o
PCIe
C/W
C/W
C/W
C/W
C/W
o
o
o
C
C
C
1.1V
Max
0.77
0.40
699
364
Maximum for commercial-rated products
Maximum for industrial-rated products
3.3V
Typ
0.01
0.01
I/O Supply
3
3
Conditions
1 m/S air flow
2 m/S air flow
Zero air flow
DD
Maximum
Maximum
3.465
DD
PEA, V
Max
0.02
.02
5
5
PEA, V
DD
Power
DD
PEHA, and
Typ
4.97
4.50
PEHA, and
April 16, 2013
Total
Power
Max
6.82
6.21