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Details, datasheet, quote on part number:HV461
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| Part: | HV461 |
| Category: | Multimedia => Audio => Sound Generators => Ring Generator |
| Description: | High Voltage Telecommunication Ring Generator |
| Company: | Supertex, Inc. |
| Datasheet: | Download HV461 datasheet File size : 317 kB |
| Request For quote: | Find where to buy HV461
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Datasheet text preview:
HV461
Initial Release
HV461FG Ring Generator Controller IC
Features
3.3V operation, logic inputs 3.3V & 5V compatible Digital control of ring frequency, amplitude, and offset Control via 8-bit bus or via individual inputs 8 built-in ring frequencies: 162/3, 20, 25, 331/3, 40, 50, 60Hz External ring frequency input Low distortion sine wave synthesizer AC-only, AC+DC, or DC-only ringer output Adjustable over-current protection Internal precision voltage references Power-on reset and undervoltage lockout for hotswap capability Sync output with adjustable lead time for synchronizing ringing relays Fault output for problem detection Open or closed loop operation Efficient 4-quadrant operation Zero-cross turn-on with zero-cross turn-off option
Description
The HV461FG is a highly integrated Ring Generator controller IC designed to work with a patented four-quadrant inverter topology, with Synchronous Rectifiers on the secondary side to achieve higher efficiencies. The inverter delivers the desired ring voltage from a standard -48V Telecom power supply. HV461 consists of a sine wave synthesizer that can provide eight different ring frequencies for universal applications. Any other frequency in the 12 to 63 Hz range can be obtained by applying an external logic signal to the IC. A transparent latch permits control of the ringer output through the 8-bit bus or individually. The output amplitude and DC offset can be digitally controlled providing high flexibility to the designers. The patented inverter topology using the HV461 controller IC is capable of achieving higher efficiencies, typically over 80%, and drive up to a 40 REN load. The controller allows ring generators to provide a floating 94VAC (rms) waveform that can be referenced to either the 48V or any other offset level by using the programmable offset pins of the IC. Output offset may be achieved by directly generating the offset within the power stage, or by floating the output stage on a DC source, or both. HV461 also has an internal Boost Converter that can be used to provide the gate drive voltages for the two MOSFETS on the primary side and the two secondary rectifiers on the secondary side.
Applications
PBX DLC Key Systems Remote Terminal Wireless Loop Systems
Typical Application
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.
HV461
Absolute Maximum Ratings
VDD Digital Inputs Analog Inputs Storage Temperature Operating Temperature +4.0V -0.5V to +7.0V -0.5V to +7.0V -65°C to +150°C -40°C to +85°C
Ordering Information
Package Option 48 lead TQFP Order Number HV461FG
Specifications
External Supply
Symbol VDD IDD Parameter
(unless otherwise specified: VDD = +3.3V, TA = -40ºC to +85ºC)
Min 3.0
Typ 3.3 7
Max 3.6 30
Unit V mA
Conditions fPW M=100kHz fosc=19.6608MHz SW outputs NC Open loop config External VGD
Supply Voltage Supply Current (AVDD + DVDD)
Gate Drive Supply
Symbol VGD I GD VDR(lo) VDR(hi) tRISE tFALL f GD DGD Parameter Boost circuit voltage Gate drive supply current Drive voltage, low Drive voltage, hi Rise time Fall time Converter frequency Duty cycle 45 50 VDD-0.4 100 100 same as PWM 55 % Min 9.0 Typ 9.6 Max 10.2 5 10 0.2 Unit V mA mA V V ns ns VDD=2.97-3.63V, SW outputs unloaded VDD=2.50-2.93V, SW outputs unloaded IOUT=-10µA IOUT=10µA CL=200pF CL=200pF Conditions
Voltage Reference
Symbol VREF1 TCREF1 Vref1 VREF2 TCREF2 Vref2 Parameter Reference voltage 1 Temperature coefficient Output regulation Reference voltage 2 Temperature coefficient Output regulation -12.5 -6.25 2.475 2.500 500 0 Min 1.237 Typ 1.250 200 +6.25 2.525 Max 1.263 Unit V µV/ºC mV V µV/ºC mV Iout=0100µA source Iout=±100µA Ta=25ºC Conditions Ta=25ºC
2
HV461
Logic Inputs
Symbol VIN(lo) VIN(hi) IIN(lo) IIN(hi) CIN tS tH Parameter Input voltage low Input voltage high Input current low Input current high Input capacitance Set-up time Hold time 0.7·VDD -1 1 10 100 100 Min Typ Max 0.3·VDD Unit V V µA µA pF ns ns VIN=0V VIN=5.0V Conditions
RESET
Symbol VRESET(ON) VRESET(OFF) VRESET (HYS) IP-UP Parameter RESET on voltage RESET off voltage RESET hysteresis RESET pull-up current Min 1.200 1.000 0.150 7.0 Typ 1.325 1.125 0.200 10.0 Max 1.450 1.250 0.250 13.0 Unit V V V µA Conditions
Undervoltage Lockout
Symbol VDD(ON) VDD(OFF) VDD(HYS) VGD(ON) VGD(OFF) VGD(HYS) Parameter VDD on voltage VDD off voltage VDD hysteresis VGD on voltage VGD off voltage VGD hysteresis 7.0 0.20 Min 2.75 2.60 0.10 same as VGD regulation point Typ 2.85 Max 2.95 Unit V V V V V V Conditions
Fault Output
Symbol VOUT(lo) KFAULT(on) KFAULT(off) tFAULT(hold) Parameter Output voltage low FAULT on threshold FAULT off threshold FAULT hold time 6 1 50 8 2 Min Typ Max 0.2 10 3 Unit V %* %* mS Conditions IOUT=1mA CFAULT=10µF CFAULT=10µF CFAULT=10µF
* Percent of time PWM overrange or overcurrent is active.
Amplifiers
Symbol VIN I IN VOFFSET VOUT(min) VOUT(max) AVOL CMRR Parameter Input Range Input Bias Current Input Offset Voltage Min output Max output Open Loop Gain Common mode rejection ratio VDD -0.2 60 -40 3 Min 0.25 -500 -5 0.1 VDD -0.1 80 -60 dB dB Typ Max 2.50 500 5 0.2 Unit V nA mV V IOUT=±100uA IOUT=±100uA VIN=0.5V to VDD-0.5 Conditions
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