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HV441 High-Voltage Ring Generator
Ordering Information
Operating Voltage
VPP1 - VNN1 220V
Package Options
44-Pin PLCC HV441PJ
Features
220V maximum operating voltage Integrated high voltage transistors Up to 70 VRMS ring signal Adjustable AC and DC output voltage level Adjustable ring signal start phase angle Pulse by pulse output over current protection 5 REN output capability External MOSFETs enhance output rating to 20 REN
General Description
The Supertex HV441 is a monolithic integrated circuit capable of generating up to a 70V RMS sine wave output at frequencies of 15Hz to 60Hz with a load of 5 North American RENs. Its output rating can be enhanced to 20 North American RENs with the addition of two Supertex MOSFETs: one N-Channel MOSFET, the TN2524N8 and one P-Channel MOSFET, the TP2522N8. The high voltage outputs have pulse by pulse over current protection set by two external sense resistors. The HV441 generates a low voltage reference sine wave by using external passive components. An external sine wave signal can be used if desired. The HV441 amplifies the reference sine wave signal by pulse width modulating the high voltage output at a nominal frequency of 100KHz. An error amplifier compares the output sine wave with the reference sine wave and adjusts the pulse width accordingly. Both the amplitude of the output sine wave and the DC offset voltage are adjustable.
Applications
Stand alone high voltage ring generator Set-top/Street box ring generator Pair gain ring generator Wireless local loops Fiber in the loop/to the curb Coax cable loop
Absolute Maximum Ratings
VPP1 - VNN1, power supply voltage VPP1, positive high voltage supply VPP2, positive gate voltage supply VNN1, negative high voltage supply VNN2, negative gate voltage supply VDD1, low voltage logic supply VDD2, low voltage analog/logic supply Storage temperature Power dissipation +240V +120V +120V -170V -170V +7.5V +18V -65C to +150C 1200mW For detailed circuit and application information, please refer to application not AN-H35.
12/13/01
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 1 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.
HV441
Electrical Characteristics
(Over operating supply voltage unless otherwise specified, TA = 25C.) Symbol Parameters Min Typ Max Unit Conditions
High Voltage Output
RSOURCE RSINK DCP DCN td(ON) trise td(OFF) tfall Vpsen Vnsen tshortP tshortN VOUTP source resistance VOUTP sink resistance Max P-Channel duty cycle Max N-Channel duty cycle HVOUT delay time HVOUT rise time HVOUT delay time HVOUT fall time HVOUT current source sense voltage HVOUT current sink sense voltage HVOUT off delay time when current source sense is activated HVOUT off delay time when current sink sense is activated VPP1 - 0.75 VPP1 - 0.67 VNN1 + 0.75 VNN1 + 0.65 VNN1 + 1.00 VPP1 - 1.00 200 50 VPP1 - 1.25 VPP1 - 1.31 VNN1 + 1.25 VNN1 + 1.33 100 100 92 94 150 50 55 55 % % ns ns ns ns V IOUT = 100mA IOUT = -100mA VPP1 = +60V, VNN1 = -160V VPP1 = +60V, VNN1 = -160V
TA = -40C to +85C TA = -40C to +85C
V ns ns
Operational Amplifier 1, 2, and 3
Symbol Parameters VOS IIN VIN VOUT ISOURCE ISINK AO BW SR Input offset voltage Input bias current Input voltage range Output voltage swing Output source current Output sink current DC open loop gain Bandwidth Output slew rate 70 100 0.3 85 1 0.5 Min Typ Max 5 500 VDD2 - 1 VDD2 - 1 3 -2.75 Unit mV nA V V mA mA dB KHz V/s Conditions
Comparator
Symbol Parameters VOS IIN VIN AV tres Input offset voltage Input bias current Input voltage range Voltage gain Response time 80 80 Min Typ Max 4 500 VDD2 - 2 Unit mV nA V dB ns Conditions
Oscillator
Symbol Parameters Vosc1 Vosc2 Voscin foscout Voscout Input voltage range for osc1 Input voltage range for osc2 Input voltage range for oscin Output frequency of oscout Oscout voltage 0 Min 0 0 0 Typ Max VDD2 VDD2 VDD1 120 VDD1 Unit V V V KHz V fOSC1 = 480KHz Conditions
2
HV441
Electrical Characteristics, cont'd.
(Over operating supply voltage unless otherwise specified, TA = 25C.) Symbol VPP1 VPP2 VNN1 VNN2 VDD1 VDD2 IPP1Q INN1Q IPP1 INN1 IDD1Q IDD2Q Parameters High voltage positive supply Positive charge pump output voltage High voltage negative supply Negative charge pump output voltage Low voltage supply Low voltage supply VPP1 quiescent current VNN1 quiescent current VPP1 operating current VNN1 operating current VDD1 quiescent current VDD2 quiescent current Min 15 VPP1 - 8 VPP - 220 VNN1 + 5.2 3.0 10.8 250 250 Typ Max 110 VPP1 - 19 -110 VNN1 +10.5 5.5 13.5 400 500 0.8 1.0 10 4.0 Unit V V V V V V A A mA mA A mA Conditions TA = -40C to +85C TA = -40C to +85C TA = -40C to +85C TA = -40C to +85C TA = -40C to +85C TA = -40C to +85C TA = -40C to +85C TA = -40C to +85C HVOUT switching at 100KHz, VPP1 = +60V, VNN1 = -160V, T A = -40C to +85C
Pin Description
VPP1 VPP2 VNN1 VNN2 VDD1 VDD2 GND PGND Input1Input1+ Output1 Input2Input2+ Output2 Input3Input3+ Output3 Vref On/Off osc1 osc2 oscin oscout HVOUT Vpsen Vnsen Pgate Ngate Positive high voltage supply Positive gate voltage supply. Generated by an internal linear regulator. Negative high voltage supply Negative gate voltage supply. Generated by an internal linear regulator. +3.3V to 5.0V supply for input and output logic +12V supply for analog/logic circuit Low voltage ground High voltage power ground Inverting input of op-amp 1. Noninverting input of op-amp 1. Output of op-amp 1. Inverting input of op-amp 2. Noninverting input of op-amp 2. Output of op-amp 2. Inverting input of op-amp 3. Noninverting input of op-amp 3. Output of op-amp 3. External input reference voltage for zero crossing detection. Enables/Disables HVOUT. Input 1 for external resonator. Connect to GND when not in use. Input 2 for external resonator. Leave floating when not in use. External oscillator input. Zero to VDD1 input signal. Connect to VDD1 when not in use. Oscillator output; 1/4 frequency of external resonator. 50% duty cycle. High voltage output. Voltage swings from VPP1 to VNN1. Pulse by pulse over current sensing for internal P-Channel MOSFET. Pulse by pulse over current sensing for internal N-Channel MOSFET. Gate drive for external P-channel MOSFET. Gate drive for external N-channel MOSFET. 3
HV441
Functional Block Diagram
Input2Output2 VDD2
VDD2 Input2+ Output1 Input1+ + +
VPP1 Current Sense and Driver Linear Reg Vpsen
op-amp2 VDD2
Pulse Width Regulator
High Voltage Level Translator
Vpgate VPP2 HVOUT
Input1+ VREF ON/OFF VDD1 osc1 osc2 osc in osc out GND
-
op-amp1 comp
Zero Voltage Crossing Detection VDD2
VDD2 Linear Reg
PGND
OSC VDD1
/4
Ramp Generator op-amp3 VDD2
+ -
High Voltage Level Translator
VNN2 Vngate Current Sense and Driver
Vnsen
VNN1
Input3+
Input3-
Output3
4
25.5K 12V 1M VDD2 Input2VDD2 4.3 Vpsen 0.1F Vpgate VPP2 HVOUT PGND VDD2 Linear Reg VNN2 Current Sense and Driver Linear Reg Input2+
+ -
8.2K 8.2nF VPP1 = +60V Output2
10.7K Input1- + +
Output1 VDD2
op-amp2
Pulse Width Regulator High Voltage Level Translator
205K
-
21K Input1+ op-amp1 comp VDD2
BAS21 1.5mH
Typical 5 REN Application Circuit
39nF Zero Voltage Crossing Detection
205K
39nF
15K
BAS21
Sine Wave Ring Output, 20Hz 0.22F
5
osc2 OSC VDD2 op-amp3
+ -
On = 5V Off = 0V /4 Ramp Generator
VREF 5.0V VDD1 400KHz osc1 High Voltage Level Translator
Vngate Vnsen
osc in VDD1 osc out GND Input312V 158K 45.3K 205K Input3-
Current Sense and Driver
0.1F 25V 4.3 Output3 VNN1 = -160V
HV441
25.5K 12V Output2 VDD2 1.0 Vpsen Vpgate VPP2 HVOUT VDD2 PGND VNN2 Vngate TN2524N8 0.1F Vnsen 1.0 VNN1 = -160V Current Sense and Driver BAS21 0.1F 25V TP2522N8 BAS21 Pulse Width Regulator High Voltage Level Translator Linear Reg Current Sense and Driver VDD2 VPP1 = +60V 1M Input2Input2+
+
8.2K 2.2nF
10.7K 21K
+ +
205K
Typical 20 REN Application Circuit
205K 39nF 39nF Zero Voltage Crossing Detection VDD2 Ramp Generator VDD2
+ -
Output1 Input1-
op-amp2 VDD2
220H
15K Linear High Reg Voltage Level Translator
Sine Wave Ring Output, 20Hz 0.47F
6
On = 5V Off = 0V
Input1+ op-amp1 comp VREF 5.0V VDD1 400KHz osc1 /4 osc2 OSC
osc in osc out GND Input3- Input312V 158K 45.3K 205K Output3 VDD1 op-amp3
HV441
HV441
Pin Configuration
HV441 Pin Function 1 N/C 2 N/C 3 N/C 4 Vref 5 N/C 6 VDD2 7 N/C 8 VDD1 9 osc1 10 osc2 11 oscin 12 oscout 13 ON/OFF 14 N/C 15 N/C 16 N/C 17 VNN1 18 N/C 19 VNN2 20 Ngate 21 Vnsen 22 N/C Pin 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Function HVOUT N/C Vpsen Pgate VPP2 N/C VPP1 N/C N/C N/C PGND GND Output2 Input2Input2+ Output1 Input1Input1+ Output3 Input3Input3+ N/C
Package Outline
39 38 37 36 35 34 33 32 31 30 29 40 41 42 43 44 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 28 27 26 25 24 23 22 21 20 19 18
top view 44-pin PLCC
12/13/010
(c)2001 Supertex Inc. All rights reserved. Unauthorized use or reproduction prohibited.
7
1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 * FAX: (408) 222-4895 www.supertex.com

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