Supertex inc. PS10 Quad Power Sequencing Controller Features General Description Sequencing of four supplies, ICs, or subsystems Many of todays high performance FPGAs, microprocessors, Independently programmable delays between open DSP and industrial/embedded subsystems require sequencing drain PWRGD flags (5.0 to 200ms) of the input power. Historically this has been accomplished 10 to 90V operation by: i) discretely using comparators, references & RC circuits ii) using expensive programmable controllers or iii) with low Tracking in combination with Schottky diodes voltage sequencers requiring resistor drop downs and several Input supervisors including: high voltage optocoupler or level shift components. UV/OV lock out/enable Power-on-Reset (POR) The PS10 saves board space, improves accuracy, eliminates Low power consumption, 0.4mA supply current optocouplers or level shifts and reduces overall component Available in a space saving 14-Lead SOIC package count by combining four timers, programmable input UV/OV supervisors, a programmable POR, and four 90V open drain Applications outputs. A high reliability, high voltage, junction isolated process Power supply sequencing allows the PS10 to be connected directly across the high voltage -48V telecom and networking distributed systems input rails. -24V cellular and fixed wireless systems The power-on-reset interval (POR) may be programmed by a -24V PBX systems capacitor on C . To sequence additional systems, multiple +48V storage systems RAMP PS10s may be daisy-chained together. If at any time the input FPGA, microprocessor tracking supply falls outside the UV/OV detector range, the PWRGD Industrial/embedded system timing/sequencing outputs will immediately become IN-ACTIVE. High voltage MEMs drivers supply sequencing High voltage display drivers supply sequencing The PS10 is available in a space saving 14-Lead SOIC package. Typical Application Circuit GND or +48V 14 /EN 487k +12V VIN DC/DC 1 Converter COM PWRGD-D 6 UV 2 PWRGD-C /EN +5V 6.81k PS10 DC/DC Converter 3 COM 5 PWRGD-B OV 4 7 PWRGD-A /EN +3.3V VEE TB TC TD RAMP DC/DC 9.76k Converter COM 11 1 2 10 13 RTB RTC RTD 10nF /EN +2.5V DC/DC Converter COM -48V or GND Notes: 1. Under Voltage Shutdown (UV) set to 37V. 2. Over Voltage Shutdown (OV) to 57.8V. Doc. DSFP-PS10 Supertex inc. C080613 www.supertex.comPS10 Ordering Information Pin Configuration Part Number Package Option Packing 1 14 PS10NG-G 14-Lead SOIC 53/Tube PS10NG-G-G M905 14-Lead SOIC 2500/Reel -G indicates package is RoHS compliant (Green) Absolute Maximum Ratings Parameter Value V referenced to VIN pin +0.3V to -100V EE 14-Lead SOIC V referenced to V voltage -0.3V to +100V PWRGD EE (top view) V and V referenced to V voltage -0.3V to 12V UV OV EE Operating ambient temperature -40C to +85C Product Marking Operating junction temperature -40C to +125C Top Marking Storage temperature range -65 to +150C Y = Last Digit of Year Sealed PS10NG O WW = Week Sealed Power dissipation 25 C 750mW YWW LLLLLLLL L = Lot Number Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Continuous operation C = Country of Origin Bottom Marking of the device at the absolute rating level may affect device reliability. All voltages are A = Assembler ID* referenced to device ground. CCCCCCCCC AAA = Green Packaging *May be part of top marking PWRGD Logic Package may or may not include the following marks: Si or Condition PWRGD-A/B/C/D 14-Lead SOIC Inactive (not ready) 0 V EE Active (ready) 1 Hi Z Typical Thermal Resistance Package ja O 14-Lead SOIC 75 C/W* Electrical Characteristics (-10V V -90V, T = 25C unless otherwise specified) IN A Sym Parameter Min Typ Max Units Conditions Supply (Referenced to VIN pin) V Supply voltage - -90 - -10 V --- EE I Supply current - - 400 450 A V = -48V EE EE OV and UV Control (Referenced to VEE pin) V UV high threshold 1.16 1.22 1.28 V Low to high transition UVH V UV low threshold 1.06 1.12 1.18 V High to low transition UVL V UV hysteresis - 100 - mV --- UVHY I UV input current - - - 1.0 nA V = V + 1.9V UV UV EE V OV high threshold 1.16 1.22 1.28 V Low to high transition OVH V OV low threshold 1.06 1.12 1.18 V High to low transition OVL V OV hysteresis - 100 - mV --- OVHY I OV input current - - - 1.0 nA V = V + 1.9V OV UV EE O O Specifications apply over 0 C T 70 C A Doc. DSFP-PS10 Supertex inc. C080613 2 www.supertex.com