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ISL62773A PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 ISL62773A
部品説明 Multiphase PWM Regulator
メーカ Intersil
ロゴ Intersil ロゴ 



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ISL62773A Datasheet, ISL62773A PDF,ピン配置, 機能
DATASHEET
Multiphase PWM Regulator for AMD Fusion™ Mobile
CPUs Using SVI 2.0
ISL62773A
The ISL62773A is fully compliant with AMD Fusion™ SVI 2.0
and provides a complete solution for microprocessor and
graphics processor core power. The ISL62773A controller
supports two Voltage Regulators (VRs) with three integrated
gate drivers and two optional external drivers for maximum
flexibility. The Core VR can be configured for 3-, 2-, or 1-phase
operation while the Northbridge VR supports 2- or 1-phase
configurations. The two VRs share a serial control bus to
communicate with the AMD CPU and achieve lower cost and
smaller board area compared with two-chip solutions.
The PWM modulator is based on Intersil’s Robust Ripple
Regulator R3™ Technology. Compared to traditional
modulators, the R3™ modulator can automatically change
switching frequency for faster transient settling time during
load transients and improved light load efficiency.
The ISL62773A has several other key features. Both outputs
support DCR current sensing with single NTC thermistor for
DCR temperature compensation or accurate resistor current
sensing. Both outputs utilize remote voltage sense, adjustable
switching frequency, OC protection and power-good.
Applications
• AMD Fusion CPU/GPU core power
• Notebook computers
Features
• Supports AMD SVI 2.0 serial data bus interface
- Serial VID clock frequency range 100kHz to 25MHz
• Dual output controller with integrated drivers
- Two dedicated core drivers
- One programmable driver for either Core or Northbridge
• Precision voltage regulation
- 0.5% system accuracy over-temperature
- 0.5V to 1.55V in 6.25mV steps
- Enhanced load line accuracy
• Supports multiple current sensing methods
- Lossless inductor DCR current sensing
- Precision resistor current sensing
• Programmable 1-, 2- or 3-phase for the core output and 1- or
2-phase for the Northbridge output
• Adaptive body diode conduction time reduction
• Superior noise immunity and transient response
• Output current and voltage telemetry
• Differential remote voltage sensing
• High efficiency across entire load range
• Programmable slew rate
• Programmable VID offset and droop on both outputs
• Programmable switching frequency for both outputs
• Excellent dynamic current balance between phases
• Protection: OCP/WOC, OVP, PGOOD and thermal monitor
• Small footprint 48 Ld 6x6 QFN package
- Pb-free (RoHS compliant)
Core Performance
100
90
80
70
60
50
40
30
20
10
0
0
VIN = 8V
VIN = 12V
VIN = 19V
VOUT CORE = 1.1V
5 10 15 20 25 30 35 40 45 50 55
IOUT (A)
FIGURE 1. EFFICIENCY vs LOAD
1.12
1.10
1.08
1.06
1.04
1.02
VIN = 12V
VIN = 8V
1.00
VIN = 19V
0.98
VOUT CORE = 1.1V
0.96 0 5 10 15 20 25 30 35 40 45 50 55
IOUT (A)
FIGURE 2. VOUT vs LOAD
November 19, 2015
FN8410.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC, 2013, 2015. All Rights Reserved
Intersil (and design), and R3 Technology are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.

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