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Numéro de référence | RC5058 | ||
Description | High Performance Programmable Synchronous DC-DC Controller for Multi-Voltage Platforms | ||
Fabricant | Fairchild Semiconductor | ||
Logo | |||
1 Page
www.fairchildsemi.com
RC5058
High Performance Programmable Synchronous
DC-DC Controller for Multi-Voltage Platforms
Features
• Programmable output for Vcore from 1.3V to 3.5V using
an integrated 5-bit DAC
• Controls adjustable linears for Vagp (selectable 1.5V/3.3V),
Vclock (2.5V), and Vtt (1.5V) or Vnorthbridge (1.8V)
• Meets VRM specification with as few as 5 capacitors
• Meets 1.550V +40/-70mV over initial tolerance,
temperature and transients
• Remote sense
• Programmable Active Droop™ (Voltage Positioning)
• Drives N-Channel MOSFETs
• Overcurrent protection using MOSFET sensing
• 85% efficiency typical at full load
• Integrated Power Good and Enable/Soft Start functions
• 24 pin SOIC package
Block Diagram
Applications
• Power supply for Pentium® III Camino Platform
• Power supply for Pentium III Whitney Platform
• VRM for Pentium III processor
• Programmable multi-output power supply
Description
The RC5058 is a synchronous mode DC-DC controller IC
which provides a highly accurate, programmable set of output
voltages for multi-voltage platforms such as the Intel Camino,
and provides a complete solution for the Intel Whitney and other
high-performance processors. The RC5058 features remote
voltage sensing, independently adjustable current limit, and a
proprietary Programmable Active Droop™ for optimal converter
transient response. The RC5058 uses a 5-bit D/A converter
to program the output voltage from 1.3V to 3.5V. The RC5058
uses a high level of integration to deliver load currents in excess
+3.3V
9
10
+1.5V
11
+
-
VCCP
+
-
12
+2.5V
OSC
REF
PWRGD,
OCL
REF
PWRGD,
OCL
+5V
VCCA 21
-
+
OCL
-
+
-
+
15
14
13
3.3/1.5V
+V
-
-+
PWRGD, OCL
5-Bit
DAC
1.24V
Reference
8 765 4
VID0VID2 VID4
VID1 VID3
-
+
3
GNDA
Digital
Control
16
ENABLE/SS
Power
Good
19
RD
+12V
18
RS
20
24 VCCP
1 HIDRV
+5V
2
23 LODRV
22
GNDP
17
PWRGD
VCC
Pentium is a registered trademark of Intel Corporation. Programmable Active Droop is a trademark of Fairchild Semiconductor.
Rev. 1.0.0
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Pages | Pages 18 | ||
Télécharger | [ RC5058 ] |
No | Description détaillée | Fabricant |
RC5051 | Programmable Synchronous DC-DC Controller for Low Voltage Microprocessors | Fairchild Semiconductor |
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RC5054A | Programmable Synchronous DC-DC Converter Controller for Low Voltage Microprocessors | Fairchild Semiconductor |
RC5057 | High Performance Programmable Synchronous DC-DC Controller for Low Voltage Microprocessors | Fairchild Semiconductor |
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