DC Power Subsystem
Intel
®
Carrier Grade Server TIGPT1U TPS
Revision
1.0
58
8. DC Power Subsystem
This chapter defines the features and functionality of the DC-input power supply. The DC-input
power supply will be NEBS hardened, so NEBS certification of the Intel
®
Carrier Grade Server
TIGPT1U will be performed with the Intel
®
TIGPT1U configured with a DC-input power supply.
8.1 Features
•
250 W output capability in full DC input voltage range
•
Power good indication LED
•
Predictive failure warning
•
Cooling fans with multispeed capability
•
Remote sense of 3.3 V, 5 V, and 12 Vdc outputs
•
DC_OK circuitry for brown out protection and recovery
•
Built-in overloading protection capability
•
Onboard field replaceable unit (FRU) information
•
I
2
C interface for server management functions
8.2 Chapter Structure and Outline
The information contained in this chapter is organized into three sections. The information is
presented in a modular format, with numbered headings for each major topic and subtopic. The
content of each section is summarized as follows:
Section 8.3: Introduction
Provides an overview of the Intel
®
TIGPT1U DC-input power subsystem.
Section 8.4: Mechanical Interface
Describes the form factor and connector pinouts.
Section 8.5: Electrical Requirements
Describes the electrical parameters for the inputs and outputs.
8.3 Introduction
The Intel
®
Carrier Grade Server TIGPT1U uses a –48 V DC-input switching power subsystem,
which provides up to 250 W DC with –48 V DC-input and with current and remote sense
regulation. All power supply module connectors accommodate “blind mating.” The power
subsystem has four externally enabled outputs, and one +5 V standby output at 2.0 A. The +5
Vdc standby output is present whenever –48V DC power is applied. The four externally
enabled outputs have the following ratings:
Table 8-1. 250 Watt DC-input Power Supply DC Output Ratings
+3.3 V at 16 A
+5 V at 12 A
+12V1 (baseboard) at 16 A with 17 A peak (co12V1 & +12V2 <= 18 A)
+12V2 (peripherals) at 10 A with 22 A peak (co12V1 & +12V2 <= 18 A)
-12 V at 0.5 A
+5VSB at 2.0 A
