Want to post a buying lead? If you are not a member yet, please select the specific/related part number first and then fill the quantity and your contact details in the "Request for Quotation Form" on the left, and then click "Send RFQ".Your buying lead can then be posted, and the reliable suppliers will quote via our online message system or other channels soon.
The L6610 is a control and housekeeping IC developed in BCD technology; it is intended for acting at the secondary side of desktop PC's or server's switching power supplies, in presence of standard voltage rails (+3.3V, ±5V, ±12V) generated by a main converter and of a supply line generated by an auxiliary converter. The typical application circuit is showed on the front page.
The Housekeeping's main function is to control and monitor the voltages generated by both the main and the auxiliary converter: it senses those voltages, sends feedback signals to the primary controllers for regulation and, upon detection of an undervoltage (UV), overvoltage (OV) or overcurrent (OC) condition, reports such fault and takes proper action to protect the system.
However, the peculiar feature of this IC is its digital programming capability that enables an accurate trimming of the output voltage rails during production test via software, without any use of external discrete trimming components or need for manual intervention on the PSU. It is also possible to program some of the monitoring functions and select how UV and OC conditions are handled in the main converter: whether latched-mode (the information is latched and released only by forcing the restart of the IC) or bouncing-mode (an attempt is made to automatically restart the converter after 1 second wait).
A key feature of this IC is its contribution to a very low external component count. Besides the extensive use of onboard programmable switches, which prevents the need for external trimming components, the IC embeds reference voltages, error amplifiers and most of the housekeeping circuitry normally required.
L6610N Maximum Ratings
Symbol
Parameter
Value
Unit
Vdd
Supply voltage
-0.5 to +7
V
Voltage on PROG, PS-ON/Clock, DFAULT, VREF, and error amplifier pins
-0.5toVdd+0.5
V
Voltage on MFAULT, PW-OK, Dmon and positive UV, OV,OC,AC sense pins.
-0.5 to +16
V
Voltage on -5V and -12V UV/OV sense pins
-16 to +5
V
Maximum current in ESD clamp diodes
10
mA
TJ
Operating Junction Temperature
-25 to 150
°C
TSTO
Storage Temperature
-50 to 150
°C
TL
Lead Temperature (soldering, 10 seconds)
300
°C
L6610N Features
· OV/UV DETECTION FOR 3.3V, ±5V, ±12V RAILS AND 5V (OR 3.3V) AUX. VOLTAGE · OC DETECTION ON 12V AND 5V (OR 3.3V) RAILS · AC MAINS UV (BROWNOUT) DETECTION WITH HYSTERESIS ·ON-LINE DIGITAL TRIMMING FOR 5V/12V, 3.3V, 5V (OR 3.3V) AUX. FEEDBACK REFERENCES AND AC MAINS UV. · DIGITALLY SELECTABLE OPTIONS · ERROR AMPLIFIERS FOR 5V/12V RAILS (MAIN SUPPLY), 3V3 POST-REGULATOR (MAG_AMP OR LINEAR) AND AUXILIARY SUPPLY. · MAIN SUPPLY ON/OFF CONTROL AND POWER GOOD SIGNAL · 50mA CROWBAR DRIVE FOR AUXILIARY OUTPUT OVP. · OPEN GROUND PROTECTION · 8ms DIGITAL SOFT START · 64 ms UV/OC BLANKING AT START-UP
L6610N Typical Application
· SWITCHING POWER SUPPLIES FOR DESKTOP PC'S, SERVERS AND WEB SERVERS · SUPERVISOR FOR DISTRIBUTED POWER
L6610N Connection Diagram
L6611D Parameters
Technical/Catalog Information
L6611D
Vendor
STMicroelectronics
Category
Integrated Circuits (ICs)
Type
-
Voltage - Supply
4.2 V ~ 7 V
Current - Supply
5mA
Voltage - Input
-
Package / Case
20-SOIC (7.5mm Width)
Packaging
Tube
Applications
Programmable Housekeeping Controller
Operating Temperature
0°C ~ 125°C
Lead Free Status
Lead Free
RoHS Status
RoHS Compliant
Other Names
L6611D L6611D
L6611D General Description
The L6611 is a control and housekeeping IC developed in BCD technology; it is intended for acting at the secondary side of desktop PC's or server's switching power supplies, in presence of standard voltage rails (+3.3V, +5V, ±12V) generated by a main converter and of a supply line generated by an auxiliary converter. The typical application circuit is showed on the front page.
The Housekeeping's main function is to control and monitor the voltages generated by both the main and the auxiliary converter: it senses those voltages, sends feedback signals to the primary controllers for regulation and, upon detection of an undervoltage (UV), or overvoltage (OV) condition, reports such fault and takes proper action to protect the system.
However, the peculiar feature of this IC is its digital programming capability that enables an accurate trimming of the output voltage rails during production test via software, without any use of external discrete trimming components or need for manual intervention on the PSU. It is also possible to program some of the monitoring functions and select how UV and OC conditions are handled in the main converter: whether latched-mode (the information is latched and released only by forcing the restart of the IC) or bouncing-mode (an attempt is made to automatically restart the converter after 1 second wait).
A key feature of this IC is its contribution to a very low external component count. Besides the extensive use of onboard programmable switches, which prevents the need for external trimming components, the IC embeds reference voltages, error amplifiers and most of the housekeeping circuitry normally required.
L6611D Maximum Ratings
Symbol
Parameter
Value
Unit
Vdd
Supply voltage
-0.5 to +7
V
Voltage on PROG, PS-ON/Clock, DFAULT, VREF, and error amplifier pins
-0.5toVdd+0.5
V
Voltage on MFAULT, PW-OK, Dmon and positive UV, OV,OC,AC sense pins.
-0.5 to +16
V
Voltage on and -12V UV/OV sense pin
-16 to +5
V
Maximum current in ESD clamp diodes
10
mA
TJ
Operating Junction Temperature
-25 to 150
°C
TSTO
Storage Temperature
-50 to 150
°C
TL
Lead Temperature (soldering, 10 seconds)
300
°C
L6611D Features
· OV/UV DETECTION FOR 3.3V, +5V, ±12V RAILS AND 5V (OR 3.3V) AUX. VOLTAGE · AC MAINS UV (BROWNOUT) DETECTION WITH HYSTERESIS · ON-LINE DIGITAL TRIMMING FOR 5V/12V, 3.3V, 5V (OR 3.3V) AUX. FEEDBACK REFERENCES AND AC MAINS UV. · DIGITALLY SELECTABLE OPTIONS · ERROR AMPLIFIERS FOR 5V/12V RAILS (MAIN SUPPLY), 3V3 POST-REGULATOR (MAG_AMP OR LINEAR) AND AUXILIARY SUPPLY. · MAIN SUPPLY ON/OFF CONTROL AND POWER GOOD SIGNAL · 50mA CROWBAR DRIVE FOR AUXILIARY OUTPUT OVP. · OPEN GROUND PROTECTION · 8ms DIGITAL SOFT START · 64 ms UV/OC BLANKING AT START-UP
L6611D Typical Application
·SWITCHING POWER SUPPLIES FOR ESKTOP PC'S, SERVERS AND WEB ERVERS ·SUPERVISOR FOR DISTRIBUTED POWER