HV461FG Supertex, HV461FG Datasheet

Telephone Ringers Controller IC

HV461FG

Manufacturer Part Number
HV461FG
Description
Telephone Ringers Controller IC
Manufacturer
Supertex
Datasheet

Specifications of HV461FG

Function
Telecom Ringer
Mounting Style
SMD/SMT
Operating Supply Voltage
7 V
Product
Telecom Ringer
Package / Case
TQFP-48
Frequency
12 Hz, 16.66 Hz, 20 Hz
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Primary Target Application
Generator Circuit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Manufacturer
Quantity
Price
Part Number:
HV461FG
Manufacturer:
ALPHA
Quantity:
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Part Number:
HV461FG
Quantity:
241
Features
Applications
Typical Application Circuit
-48V
3.3V operation, logic inputs 3.3V & 5.0V compatible
Digital control of ring frequency, amplitude, and offset
Control via 8-bit bus or via individual inputs
8 built-in ring frequencies: 12, 16
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
PBX
DLC
Key Systems
Remote Terminal
Wireless Loop Systems
+3.3V
I/O
Xtal
V
HV461FG
DD
Current Sense
Gate Drive
Out
Ring Generator Controller IC
1235 Bordeaux Drive, Sunnyvale, CA 94089
2
/
3
, 20, 25, 33
1
/
3
, 40,
General 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.
The HV461 consists of a sine wave synthesizer that can
provide eight different ring frequencies for universal
applications. Any other frequency in the 12 to 63Hz range
can be obtained by applying an external logic signal to the
IC. A transparent latch permits control of the ringer output
individually or through the 8-bit bus. 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.
The 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.
Tel: 408-222-8888
www.supertex.com
-48V
0V
-48V
94VAC
HV461
OR
(rms)

Related parts for HV461FG

HV461FG Summary of contents

Page 1

... V +3.3V DD Gate Drive Out ⇔ HV461FG I/O -48V General 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 / , 20 desired ring voltage from a standard -48V Telecom power ...

Page 2

... Bordeaux Drive, Sunnyvale, CA 94089 48-Lead LQFP (FG) (top view) Top Marking YY = Year Sealed YYWW WW = Week Sealed HV461FG L = Lot Number LLLLLLLLL C = Country of Origin* Bottom Marking A = Assembler ID* = “Green” Packaging CCCCCCCC AAA *May be part of top marking 48-Lead LQFP (FG) = -40°C to +85°C) ...

Page 3

... 25º µV/ºC --- 100µA source out Max Units Conditions 0.3·V V --- --- -1 µ µ 5. --- 100 ns --- 100 ns --- Max Units Conditions 1.450 V --- 1.250 V --- 0.250 V --- 13.0 µA --- Max Units Conditions 2.95 V --- - V --- - V --- V --- - V --- - V --- ● Tel: 408-222-8888 ● www.supertex.com HV461 ...

Page 4

... FREQ = 100, f OSC - Hz FREQ = 101, f OSC - Hz FREQ = 110, f OSC - Hz FREQ = 111, f OSC 0 19.6608MHz OSC C = 33nF 3 % SINE 2/3 to 60Hz ring 17.6 kΩ AMP ≠ 00 88.0 kΩ AMP = 00 ● Tel: 408-222-8888 ● www.supertex.com HV461 -0.5 = 19.6608MHz = 19.6608MHz = 19.6608MHz = 19.6608MHz = 19.6608MHz = 19.6608MHz = 19.6608MHz = 19.6608MHz ...

Page 5

... Conditions V V --- DD +500 nA --- 1.0 µ 0 0. Max Units Conditions 0 1.0mA sink OUT - 1.0mA source OUT 5 µs --- µs 60 SYNCMODE = 0 ring 1 SYNCMODE = 1 cycle SINE 5 154kΩ SYNC C = 47nF SYNC +250 µ 10nF SINE 300 50pF L 300 50pF L ● Tel: 408-222-8888 ● www.supertex.com HV461 ...

Page 6

... V = 0.50V, PWM DCL 0.50V, PWM DCL 0.75V, PWM DCL 0.75V, PWM DCL 1.0 µ 1.0V DCL 150 0pF DB 1.05 µ 14kΩ 150 0pF DLY 1.05 µ 14kΩ, C DLY DLY ● Tel: 408-222-8888 ● www.supertex.com HV461 = 2. 2. 100pF = 100pF ...

Page 7

... DLY t ON SYNC(ON) Free ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 7 SW2 SW3 Off Off Off Switching Switching Switching t DB Off On Off On t OFF Decay time dependent on value of cap connected to SINEREF. Siezed ● Tel: 408-222-8888 ● www.supertex.com HV461 SW4 Off Switching Switching ...

Page 8

... SYNC(delay) SYNC(ON) equations for elements connected to different pins are given in the Pin Descriptions Table beginning on page 11. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 8 SYNC(OFF) sync at 0º or 180º Siezed AMP 00 amplitude changes sync'd to zero crossings ● Tel: 408-222-8888 ● www.supertex.com HV461 ...

Page 9

... Figure 5: Block Diagram and Typical Applicatin Circuit ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 9 ● Tel: 408-222-8888 ● www.supertex.com HV461 ...

Page 10

... Figure 6: Typical Power Stage for 15 REN Ring Generator ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 10 ● Tel: 408-222-8888 ● www.supertex.com HV461 ...

Page 11

... Values in the range of 1µF to 100µF are appropriate. If the FAULT output is not used, this pin should be grounded. See also FAULT (pin 15). / 10µA RESET ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 11 ≈ 12.5GHzΩ (valid for 20- PWM OSC ● Tel: 408-222-8888 ● www.supertex.com HV461 ...

Page 12

... Primary–side N-channel switch driver output REF1 DCREF1 x Gain RMS 50% 000 = 16.7Hz 001 = 20Hz 100 = 33.3Hz 101 = 40Hz ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 DCREF2 11 = DCREF3 100% 010 = 25Hz 011 = 30Hz 110 = 50Hz 111 = 60Hz = 0.48RC DLY ● Tel: 408-222-8888 ● www.supertex.com HV461 ...

Page 13

... DC offset in conjunction with AMPx and OFFx. Gain = R see schematic) nominal. Output impedance is approximately 16kΩ. An P-P 1235 Bordeaux Drive, Sunnyvale, CA 94089 and FB2 FB1 FB3 FB1 FB4 FB2 · RING = 0. 0.4V MIN DCL MAX ● Tel: 408-222-8888 ● www.supertex.com HV461 , DCL ...

Page 14

... Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability to the replacement of the devices determined defective due to workmanship ...

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