RV4145A_04 FAIRCHILD | Alldatasheet

Document overview

  • PDF pages: 10

Technical content

Features

  • No potentiomenter required
  • Direct interface to SCR
  • Supply voltage derived from AC line – 26V shunt
  • Adjustable sensitivity

Description

The RV4145A is a low power controller for AC outlet ground fault interrupters. These devices detect hazardous grounding conditions, such as equipment (connected to opposite phases of the AC line) in contact with a pool of water and open circuits the line before a harmful or lethal shock occurs. Contained internally are a 26V zener shunt regulator, an op amp, and an SCR driver. WIth the addition of two sense transformers, a bridge rectifier, an SCR, a relay, and a few additional components, the RV4145A will detect and protect against both hot wire to ground and neutral wire to ground faults. The simple layout and conventional design ensure ease of application and long-term reliability. Block Diagram 10K 10K +VS (+26V) SCR Trigger VFB +Input Ground 4.7K 65-4145A-01 RV4145A Op Amp Output 6.5V 6.5V 6.5V 6.5V VREF (+13V) RV4145A Low Power Ground Fault Interrupter

  • Grounded neutral fault detection
  • Meets U.L. 943 standards
  • 450µA quiescent current
  • Ideal for 120V or 220V systems

PRODUCT SPECIFICATION RV4145A REV. 1.0.5 12/7/04 Pin Assignments Absolute Maximum Ratings (beyond which the device may be damaged)1 Notes: 1. Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only if Operating Conditions are not exceeded. Operating Conditions Parameter Min Typ Max Units Supply Current 18 mA Internal Power Dissipation 500 mW Storage Temperature Range -65 +150 °C Operating Temperature Range -35 +85 °C Junction Temperature 125°C Lead Soldering Temperature 60 Sec, DIP 300 °C

10 Sec, SOIC 260 °C

P D T A < 50°C SOIC 300 mW PDIP 450 mW For T A > 50°C Derate at SOIC 4 mW/°C PDIP 6 mW/°C Parameter Min Typ Max Units θ JA Thermal resistance SOIC 240 °C/W PDIP 160 °C/W NC 8-Pin PDIP 8-Pin SOIC Op Amp Output +VS SCR Trigger VFB +Input VREF GND

RV4145A PRODUCT SPECIFICATION REV. 1.0.5 12/7/04

Electrical Characteristics

S = 1.5mA and T A = +25°C) S = 1.5mA and -35°C T A +85°C) Parameters Test Conditions Min Typ Max Units Detector Reference Voltage Pin 7 to Pin 3 6.8 7.2 8.1 ±V Shunt Regulator Zener Voltage (+V S ) Pin 6 to Pin 4 25 26 29.2 V Reference Voltage (V REF ) Pin 3 to Pin 4 12.5 13 14.6 V Quiescent Current (I S )+ V S = 24V 450 750 µA Operational Amplifier Offset Voltage Pin 2 to Pin 3 -3.0 0.5 +3.0 mV +Output Voltage Swing Pin 7 to Pin 3 6.8 7.2 8.1 V –Output Voltage Swing Pin 7 to Pin 3 -9.5 -11.2 -13.5 V +Output Source Current Pin 7 to Pin 3 650 µA –Output Source Current Pin 7 to Pin 3 1.0 mA Gain Bandwidth Product F = 50KHz 1.0 1.8 MHz Resistors I S = 0mA R1 Pin 1 to Pin 3 10 k Ω R2 Pin 2 to Pin 3 10 k Ω R3 Pin 5 to Pin 4 3.5 4.7 5.9 k Ω SCR Trigger Voltage Pin 5 to Pin 4 Detector On 1.5 2.8 V Detector Off 0 1 10 mV Parameters Test Conditions Min Typ Max Units Detector Reference Voltage Pin 7 to Pin 3 6.5 7.2 8.3 ±V Shunt Regulator Zener Voltage (+V S ) Pin 6 to Pin 4 24 26 30 V Reference Voltage (V REF ) Pin 3 to Pin 4 12 13 15 V Quiescent Current (I S )+ V S = 23V 500 µA Operational Amplifier Offset Voltage Pin 2 to Pin 3 -5.0 0.5 +5.0 mV +Output Voltage Swing Pin 7 to Pin 3 6.5 7.2 8.3 V –Output Voltage Swing Pin 7 to Pin 3 -9 -11.2 -14 V Gain Bandwidth Product F = 50KHz 1.8 MHz Resistors I S = 0mA R1 Pin 1 to Pin 3 10 k Ω R2 Pin 2 to Pin 3 10 k Ω R3 Pin 5 to Pin 4 3.5 4.7 5.9 k Ω SCR Trigger Voltage Pin 5 to Pin 4 Detector On 1.3 2.8 V Detector Off 0 3 50 mV

Figure 1. GFI Application Circuit (Three-Wire Outlet)

  • Value depends on transformer characteristics.

Figure 2. GFI Application Circuit (Two-Wire Outlet)

  • Value depends on transformer characteristics.

RV4145A PRODUCT SPECIFICATION REV. 1.0.5 12/7/04 Schematic Diagram 65-4145A-05 +V (+26V) (3) V (+13V) (4) Ground (5) Op Amp Output (7) SCR Trigger 250K Q20 6.5V Q19 6.5V Q18 6.5V Q17 6.5VQ16 R12 7.2K 4.7K R13 30K Q15 Substrate Q13 450 5.6V 39K Q14 Q11 Q12 Q23 Q10 4 pF Q7 Q8 50K Q5Q4 50K R10 6K R2 10K Q1 Q2 Q21 Q22 10K (-) (+)(1) 10 pF V (2) +Input S R14 1.3K FB REF (6)

PRODUCT SPECIFICATION RV4145A REV. 1.0.5 12/7/04 Mechanical Dimensions 8-Lead Plastic DIP Package A — .210 — 5.33 Symbol Inches Min. Max. Min. Max. Millimeters Notes A1 .015 — .38 — .022 .56B .014 .36 B1 .045 .070 1.14 1.78 D .348 .430 8.84 10.92 .300 .325 7.62 8.26 .240 .280 6.10 7.11 E e — .430 — 10.92 .005 — .13 — A2 .115 .195 2.93 4.95 .100 BSC 2.54 BSC eB .115 .160 2.92 4.06L 8° 8° 5N C .008 .015 .20 .38 Notes: Dimensioning and tolerancing per ANSI Y14.5M-1982. "D" and "E1" do not include mold flashing. Mold flash or protrusions shall not exceed .010 inch (0.25mm). Terminal numbers are for reference only. "C" dimension does not include solder finish thickness. Symbol "N" is the maximum number of terminals. D e B A L 5 8 E eB C

RV4145A PRODUCT SPECIFICATION REV. 1.0.5 12/7/04 Mechanical Dimensions (continued) 8-Lead SOIC Package D A – C – ccc C LEAD COPLANARITY SEATING PLANEe B L h x 45° C α EH A .053 .069 1.35 1.75 Symbol Inches Min. Max. Min. Max. Millimeters Notes A1 .004 .010 0.10 0.25 .020 0.51B .013 0.33 C .008 .010 0.20 0.25 E .150 .158 3.81 4.01 e .228 .244 5.79 6.20 .010 .020 0.25 0.50 H .050 BSC 1.27 BSC h L .016 .050 0.40 1.27 0° 8° 0° 8° N8 8 α ccc .004 0.10—— D .189 .197 4.80 5.00 Notes: Dimensioning and tolerancing per ANSI Y14.5M-1982. "D" and "E" do not include mold flash. Mold flash or protrusions shall not exceed .010 inch (0.25mm). "L" is the length of terminal for soldering to a substrate. Terminal numbers are shown for reference only. "C" dimension does not include solder finish thickness. Symbol "N" is the maximum number of terminals.

PRODUCT SPECIFICATION RV4145A 12/7/04 0.0m 001 Stock#DS2004145A  2002 Fairchild Semiconductor Corporation LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

Ordering Information

Part Number Package Operating Temperature Range Packing Method RV4145AN 8-Lead Plastic DIP -35 °C to +85°C Rail RV4145AM 8-Lead Plastic SOIC -35 °C to +85°C Rail RV4145AMT 8-Lead Plastic SOIC -35 °C to +85°C Tape and Reel