Intel EP80579 Manual page 68

Figure 39. Development Board Power Delivery Implementation
+12VPC
16A
5.0V
VCC
50A
1.8V
V1P8_DDR
1.8V
VSBY1_8
5.0V
VSBY5
2.A
3.3V
VCC3
28A
-12VPC
1A
400W ATX
Note: The Development Board power delivery configuration shown is only an example. Many power distribution methods
achieve similar results. It is critical, when deviating from these examples in any way, to consider the effects of the
change. See Table 11
®
Intel EP80579 Integrated Processor Product Line
Platform Design Guide
68
®
Intel EP80579 Integrated Processor Product Line—System Power Delivery Guide
EP80579 Development Board Power Delivery Block Diagram
1.0V 2.5V
V1P0 V2P5
1.0V 2.0V
P1V0_AUX P2V5_AUX
0.9V
DDR2_VTT
3.3V
VSBY3_3
2.5V
VSBY2_5
3.3V
P3V3_AUX
1.8V
1.0V
V1P8
VSBY1_0
RTC
Battery
VCCPRTC
for Voltage Definitions.
1.2V
V1P2
5.0V
P5_AUX
IA-32 core Power Suppy:
VCCVC (1.0) V @ 600 MHz core
VCCVC (1.3) V @ 1.066 GHz core
VCCVC (1.3) V @ 1.2 GHz core
VCC (1.2V) Core Logic:
CRU, CRU_PAD, DDR, Exp Bus,
GbE, IMCH_PAD, MISC I/O, PCI-E,
SATA, USB, IMCH, IICH
DDR Power Supply:
VCC18 (1.8V) – DDR2 Logic
VTTDDR (0.9V) – DDR2 Vref.
VSBY3_3 (3.3V): 3.3V I/O Sustain
VCCPSUS (USB, IMCH)
VCCGBEPSUS (GbE)
VSBY2_5 (2.5V): 2.5V I/O Sustain
VCCSUS25 (GbE)
VSBY1_2 (1.2V): Core Logic Sustain
VCCSUS1(IMCH);
VCC1P2_USBSUS(USB)
1.2V
VSBY1_2
VCC33 (3.3V) 3.3V Core Logic
VCC33[Core Logic] Peripheral Units:
IMCH, TDM, CAN, EXP_Bus,
SATA, USB, GbE
VCCPRTC (3.3V) Battery
Power Generators:
Switching Regulator (SW)
VCC-CPU
1.0 – 1.3 V
EP80579
Linear Regulator (LR)
May 2010
Order Number: 320068-005US