STEVAL-ISA051V2 STMicroelectronics, STEVAL-ISA051V2 Datasheet
STEVAL-ISA051V2
Manufacturer Part Number
STEVAL-ISA051V2
Description
BOARD EVAL PM6670AS DDR2/3
Manufacturer
STMicroelectronics
Type
DC/DC Switching Converters, Regulators & Controllersr
Specifications of STEVAL-ISA051V2
Design Resources
STEVAL-ISA051V2 Gerber Files STEVAL-ISA051V2 Schematic STEVAL-ISA051V2 Bill of Material
Main Purpose
Special Purpose DC/DC, DDR Memory Supply
Outputs And Type
4, Non-Isolated
Voltage - Output
1.5V, 1.8V
Voltage - Input
4.5 ~ 36V
Regulator Topology
Buck
Board Type
Fully Populated
Utilized Ic / Part
PM6670A
Input Voltage
4.5 V to 36 V
Output Voltage
1.8 V, 1.5 V
Product
Power Management Modules
Silicon Manufacturer
ST Micro
Silicon Core Number
PM6670AS
Kit Application Type
Power Management
Application Sub Type
DDR2/3 Memory Power Supply Controller
Kit Contents
Board
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output
-
Power - Output
-
Frequency - Switching
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
PM6670AS
Other names
497-8412
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STEVAL-ISA051V2
Manufacturer:
STMicroelectronics
Quantity:
1
Features
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Description
This evaluation board based on the PM6670AS
device is a complete DDR2/3 power supply
regulator for portable applications designed to
meet JEDEC specifications. It integrates a
constant on-time (COT) buck controller, a 2 Apk
sink/source low dropout regulator and a 15 mA
low noise buffered reference.
The COT architecture assures fast transient
response supporting both polymeric and ceramic
output capacitors. An embedded integrator
control loop compensates the DC voltage error
due to the output ripple. The 2 Apk sink/source
linear regulator provides the memory termination
voltage with fast load transient response.
March 2008
For further information contact your local STMicroelectronics sales office.
4.5 V to 36 V input voltage range
0.9 V, ±1% voltage reference
1.8 V (DDR2) or 1.5 V (DDR3) fixed output
voltages
0.9 V to 2.6 V adjustable output voltage
1.237 V ±1% reference voltage available
Very fast load transient response using
constant on-time loop control
No R
of the low-side MOSFETs
Negative current limit
Latched OVP, UVP and thermal shutdown
Fixed 3 ms soft-start
Selectable pulse-skipping at light load
Selectable no-audible (33 kHz) pulse-skip
mode
All ceramic output capacitors application
supported
Output voltage ripple compensation
SENSE
current sensing using the R
Complete DDR2/3 memory power supply controller
evaluation board based on the PM6670AS
DS(on)
Rev 1
The device is fully compliant with system sleep
states S3 and S4/S5, providing LDO output high
impedance in suspend-to-RAM and tracking
discharge of all outputs in suspend-to-disk.
STEVAL-ISA051V2
STEVAL-ISA051V2
Data Brief
www.st.com
1/4
4
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STEVAL-ISA051V2 Summary of contents
Page 1
... For further information contact your local STMicroelectronics sales office. STEVAL-ISA051V2 evaluation board based on the PM6670AS DS(on) The device is fully compliant with system sleep states S3 and S4/S5, providing LDO output high impedance in suspend-to-RAM and tracking discharge of all outputs in suspend-to-disk. Rev 1 Data Brief STEVAL-ISA051V2 www.st.com 1/4 4 ...
Page 2
... Circuit schematic 1 Circuit schematic Figure 1. Schematic 2/4 1L60A PS1L STPS 1L60A PS1L STPS CSNS DSCG 19 ASE PHASE COMP 20 HGATE MODE 21 BOOT VSNS VS 22 LDOIN SC VOSC 23 VTT EF VREF STEVAL-ISA051V2 ...
Page 3
... STEVAL-ISA051V2 2 Revision history Table 1. Document revision history Date 03-Mar-2008 Revision 1 Initial release. Revision history Changes 3/4 ...
Page 4
... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 4/4 Please Read Carefully: © 2008 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com STEVAL-ISA051V2 ...