HV450 High-Voltage Ring Generator Ordering Information Operating Voltage Package Options VNN1 SOW-16 -220V HV450WG Features General Description ❏ Integrated high voltage transistors 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. ❏ 67VRMS ring signal ❏ Output over current protection ❏ Can drive external MOSFETs for larger loads Applications ❏ High voltage ring generator ❏ Set-top/Street box ring generator ❏ Pair gain ring generator Pin Configuration 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 -240V N/C 1 16 VPP PGND 2 15 PGATE GND 3 14 VPSEN Mode 4 13 HVOUT PIN 5 12 VNSEN NIN 6 11 NGATE -20V EN 7 10 VNN2 VNN1+20V VDD 8 9 VNN1 +7.5V -65°C to +150°C top view 600mW SOW-16 * All voltages referenced to ground 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 = -40°C to +85°C.) Symbol Parameters Min Typ Max Unit VPP P-channel linear regulator output voltage -10 -18 V VNN1 High voltage negative supply - 220 -110 V VNN2 Negative linear regulator output voltage VNN1 + 6.0 VNN1 + 10.0 V VDD Logic supply voltage 5.5 V INN1Q VNN1 quiescent current 300 500 IDDQ VDD1 quiescent current 90 200 35 100 4.5 25 INN1 VNN1 operating current IDD VDD operating current IIL Mode logic input low current VIL Logic input low voltage 0 VIH Logic input high voltage 4.0 1.4 µA µA mA 1.0 25 Conditions 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 mA µA Mode = 0V 1.0 V VDD = 5.0V 5.0 V VDD = 5.0V Max Unit High Voltage Output Symbol Parameters Min Typ Conditions RSOURCE VOUTP source resistance 65 Ω IOUT = 100mA RSINK VOUTP sink resistance 65 Ω IOUT = -100mA td(ON) HVOUT delay time 150 ns PIN = high to low, Mode = high trise HVOUT rise time 50 ns PIN = high to low td(OFF) HVOUT delay time 200 ns NIN = low to high, Mode = high tfall HVOUT fall time 50 ns NIN = low to high tdb Logic deadband time 250 ns Mode = low Vpsen HVOUT current source sense voltage Vnsen HVOUT current sink sense voltage tshortP HVOUT off delay time when current source sense is activiated HVOUT off delay time when current sink sense is activated tshortN -1.2 -0.8 V VNN1 + 0.8 VNN1 + 1.2 V 70 150 ns 70 150 ns twhout Minimum pulse width for HVOUT at PGND 500 ns twlout Minimum pulse width for HVOUT at VNN1 500 ns Truth Table NIN PIN Mode EN HVOUT L L H L Pgnd L H H L High Z H* L* H L * H H H L VNN1 L X L L VNN1 H X L L Pgnd X X X H High Z *This state will short VNN1 to Pgnd and should therefore be avoided. 2 HV450 Block Diagram PGND High Voltage Level Translator VDD PIN NIN EN Mode Current Sense and Driver Pgate Linear Reg VPP Logic GND Vpsen HVOUT VDD Linear Reg High Voltage Level Translator VNN2 Ngate Current Sense and Driver Vnsen VNN1 Pin Description VPP P-channel gate voltage supply. Generated by an internal linear regulator. A 0.1µF capacitor should be connected between PGND and VPP. VNN1 Negative high voltage supply. VNN2 N-channel gate voltage supply. Generated by an internal linear regulator. A 0.1µF capacitor should be connected between VNN2 and VNN1. VDD Logic supply voltage. GND Low voltage ground. PGND High voltage power ground. PIN Logic control input. When mode is high, logic input high turns OFF output high voltage P-Channel. NIN Logic control input. When mode is high, logic input high turns ON output high voltage N-Channel. EN Logic enable input. Logic low enables IC. Mode 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. HVOUT High voltage output. Voltage swings from PGND to VNN1. Vpsen Pulse by pulse over current sensing for P-Channel MOSFET. Vnsen Pulse by pulse over current sensing for N-Channel MOSFET. Pgate Gate drive for external P-channel MOSFET. Ngate Gate drive for external N-channel MOSFET. 3 HV450 Typical Application Circuit Pgnd Feedback Network 3.9Ω High Voltage Level Translator VDD PIN Current Sense and Driver Linear Reg EN 0.1µF Pgate VPP HVOUT NIN µ-Controller Vpsen 10mH Logic VDD Mode GND High Voltage Level Translator Sine Wave Ring Output 0.22µF VNN2 Linear Reg Ngate Current Sense and Driver 0.1µF Vnsen 3.9Ω VNN1 HV450 12/13/010 ©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