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| HV450 High-Voltage Ring Generator Ordering Information Operating Voltage VNN1 -220V Package Options SOW-16 HV450WG Features Integrated high voltage transistors 67VRMS ring signal Output over current protection Can drive external MOSFETs for larger loads General Description The Supertex HV450 is a PWM high voltage ring generator. The high voltage output P- and N-channel transistors are controlled independently by the logic inputs PIN and NIN. For application where a single control pin (NIN) is desired, the mode pin should be connected to Gnd. This adds a 200ns deadband on the control logic to avoid cross conduction on the high voltage output. A logic high on NIN will turn the high voltage P-Channel on and the N-Channel off. The outputs can drive up to 5 RENs. The HV450 can drive external MOSFETs for applications requiring larger loads. The IC can be powered down by connecting the enable pin to VDD. The high voltage outputs have pulse by pulse over current protection. Applications High voltage ring generator Set-top/Street box ring generator Pair gain ring generator Pin Configuration N/C PGND GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VPP PGATE VPSEN HVOUT VNSEN NGATE VNN2 VNN1 Absolute Maximum Ratings* VNN1, power supply voltage VPP, P-channel gate voltage supply VNN2, N-channel gate voltage supply VDD, logic supply Storage temperature Power dissipation * All voltages referenced to ground Mode PIN -240V -20V VNN1+20V +7.5V -65C to +150C 600mW NIN EN VDD top view SOW-16 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. HV450 Electrical Characteristics (Over operating supply voltages unless otherwise specified, TA = -40C to +85C.) Symbol Parameters VPP VNN1 VNN2 VDD INN1Q IDDQ INN1 IDD IIL VIL VIH P-channel linear regulator output voltage Min -10 - 220 4.5 Typ Max -18 -110 VNN1 + 10.0 5.5 Unit V V V V A A mA Conditions High voltage negative supply Logic supply voltage VNN1 quiescent current VDD1 quiescent current VNN1 operating current VDD operating current Mode logic input low current Logic input low voltage Logic input high voltage Negative linear regulator output voltage VNN1 + 6.0 300 90 35 1.4 500 25 200 100 PIN = NIN = EN = L PIN = NIN = L, EN = H PIN = NIN = EN = L PIN = NIN = L, EN = H No load, VOUTP and VOUTN switching at 100KHz Mode = 0V VDD = 5.0V VDD = 5.0V 1.0 25 0 4.0 1.0 5.0 mA A V V High Voltage Output Symbol Parameters RSOURCE VOUTP source resistance RSINK td(ON) trise td(OFF) tfall tdb Vpsen Vnsen tshortP tshortN twhout twlout VOUTP sink resistance HVOUT delay time HVOUT rise time HVOUT delay time HVOUT fall time Logic deadband time HVOUT current source sense voltage HVOUT current sink sense voltage HVOUT off delay time when current source sense is activiated HVOUT off delay time when current sink sense is activated Minimum pulse width for HVOUT at PGND Minimum pulse width for HVOUT at VNN1 -1.2 VNN1 + 0.8 70 70 Min Typ 65 65 150 50 200 50 250 -0.8 VNN1 + 1.2 150 150 500 500 Max Unit ns ns ns ns ns V V ns ns ns ns Conditions IOUT = 100mA IOUT = -100mA PIN = high to low, Mode = high PIN = high to low NIN = low to high, Mode = high NIN = low to high Mode = low Truth Table NIN L L H* H L H X PIN L H L* H X X X Mode H H H H L L X EN L L L L L L H HVOUT Pgnd High Z * VNN1 VNN1 Pgnd High Z *This state will short VNN1 to Pgnd and should therefore be avoided. 2 HV450 Block Diagram PGND Current Sense and Driver Linear Reg Vpsen VDD PIN NIN EN Mode GND High Voltage Level Translator Pgate VPP HVOUT Logic VDD High Voltage Level Translator Linear Reg VNN2 Ngate Current Sense and Driver Vnsen VNN1 Pin Description VPP VNN1 VNN2 VDD GND PGND PIN NIN EN Mode HVOUT Vpsen Vnsen Pgate Ngate P-channel gate voltage supply. Generated by an internal linear regulator. A 0.1F capacitor should be connected between PGND and VPP. Negative high voltage supply. N-channel gate voltage supply. Generated by an internal linear regulator. A 0.1F capacitor should be connected between VNN2 and VNN1. Logic supply voltage. Low voltage ground. High voltage power ground. Logic control input. When mode is high, logic input high turns OFF output high voltage P-Channel. Logic control input. When mode is high, logic input high turns ON output high voltage N-Channel. Logic enable input. Logic low enables IC. Logic mode input. Logic low activates 200nsec deadband. When mode is low, NIN turns on and off the high voltage N- and P-Channels. Pin is not used and should be connected to VDD or ground. High voltage output. Voltage swings from PGND to VNN1. Pulse by pulse over current sensing for P-Channel MOSFET. Pulse by pulse over current sensing for N-Channel MOSFET. Gate drive for external P-channel MOSFET. Gate drive for external N-channel MOSFET. 3 HV450 Typical Application Circuit Pgnd Feedback Network Current Sense and Driver Linear Reg Vpsen Pgate VPP HVOUT Logic VDD Linear Reg VNN2 Ngate Current Sense and Driver 10mH Sine Wave Ring Output 0.22F 3.9 High Voltage Level Translator 0.1F VDD PIN NIN -Controller EN Mode GND High Voltage Level Translator Vnsen 3.9 0.1F VNN1 HV450 12/13/010 (c)2001 Supertex Inc. All rights reserved. Unauthorized use or reproduction prohibited. 4 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 * FAX: (408) 222-4895 www.supertex.com |
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