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Supports DC and AC systems Switch to Controller scalable galvanic isolation Differential signaling interface for transient‐immune differential serial protocol Device powered via galvanically‐isolated interface CLK/NCLK. No power rail needed VGG for decoupling cap only Switch Characteristics Bi‐directional blocking in OFF state Single 36V switch, 240mΩ RDS(on) Up to 1A operating current Steady‐state over‐current protection, 1.5A nominal Inrush current tolerant for 40ms, 3A nominal Transient protection for SW1 and SW2: IEC 61000‐4‐2 (ESD) ±24kV (air), ±16kV (contact) IEC 61000‐4‐4 (EFT) 40A (5/50ns) level 4 IEC 61000‐4‐5 (Surge/Lightning) 80V with 2Ω internal impedance (1.2/50μs) Summary Specification Junction operating temperature ‐40 °C to 125 °C Packaged in a 8 pin SOIC‐EP Product is lead‐free, Halogen Free, RoHS / WEEE
www.semtech.com 2 of 12 Semtech TS13501 Final Datasheet 2.1
25 June 2018
Pin Name Pin # Function Description CLK 1 Switch Control Input Serial interface to control device when correct protocol sent NCLK 2 CLK Compliment Input Drive compliment of CLK on this pin SW1 3 Switch Terminal 2 First switch terminal (Connect to Load or Supply) N/C 4 No Connection Pin not used SRC 5 Supply Reference Supply return SW2 6 Switch Terminal 1 Second switch terminal (Connect to Load or Supply) VGG 7 Internal Supply Device internally generated supply (connect decoupling capacitor to SRC) STAT 8 Device Status Output Sends status output when switch is closed (Enabled) SUB PAD Thermal Pad Pad for improved thermal performance ‐ do not connect to any other net Functional Block Diagram
www.semtech.com 3 of 12 Semtech TS13501 Final Datasheet 2.1 Over operating free‐air temperature range unless otherwise noted (1) Parameter Range Unit SW1, SW2(2) ‐1 to 45 V VGG, CLK, NCLK, STAT(2) ‐0.3 to 5.5 V Operating Ambient Temperature Range, TA ‐40 to 85 °C Storage Temperature Range, TSTG ‐65 to 150 °C Electrostatic Discharge – Human Body Model ±4 kV Electrostatic Discharge – Charged‐Device Model ±1 kV Electrostatic Discharge – IEC Contact (SW1 and SW2 Pins) (3) ±16 kV Electrostatic Discharge – IEC Air Discharge (SW1 and SW2 Pins) (3) ±24 kV Peak IR Reflow Temperature (10 to 30 seconds) 260 °C Notes: (1) Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other condition beyond those indicated under “Recommended Operating Conditions” are not implied. Exposure to Absolute Maximum Rated conditions for extended periods may affect device reliability. (2) Voltage values are with respect to the SRC terminal. (3) SW1 and SW2 pins only, may require special system board layout techniques to achieve these levels. Thermal Characteristics Symbol Parameter Value Unit θJA Thermal Resistance, Junction to Ambient 40 °C/W TJ MAX Maximum Junction Temperature 150 °C TJ Operating Junction Temperature Range ‐40 to 125 °C Recommended Operating Conditions Symbol Parameter Min Typ Max Unit VSWX Switch Voltage, |VSW1 ‐ VSW2| 24 36 V VIH CLK, NCLK Input High Voltage 1.7 3.3 V VIL CLK, NCLK Input Low Voltage 0 0.5 V CVGG VGG Bypass Capacitor 470 nF CCLK CLK Isolation Capacitor 680 pF CNCLK NCLK Isolation Capacitor 680 pF CSTAT STAT Isolation Capacitor 100 pF VCLK CLK, NCLK Drive Voltage 1.7 3.3 5.5 V FCLK CLK input frequency to turn on switch 75 100 1000 kHz NCLKON Number of CLK pulses to Turn On after VGG POR 18 Pulses TCLKOFF CLK low time to Turn‐Off 50 150 μs TPRE‐CHG Pre‐charge time before VGG POR; VCLK = 3.0V; FCLK = 100kHz 10 ms FSYS System Supply Frequency (Switched Load Power Source) 0 60 65 Hz
www.semtech.com 4 of 12 Semtech TS13501 Final Datasheet 2.1
Electrical Characteristics
TJ = ‐40°C to 125°C (unless otherwise noted) Symbol Parameter Conditions Min Typ Max Unit Supply Voltages VGG VGG Bias Output Voltage With respect to SRC, CLK and NCLK drive = 3.0V(1) 4.5 5.0 5.5 V I/O Parameters VSTATH STAT Output High Voltage Drop 3.0V < VGG < 5.5V; IOH = ‐4mA VSTATH = VGG ‐ VSTAT 0.7 1.3 V VSTATL STAT Output Low Voltage 3.0V < VGG < 5.5V; IOH = 4mA VSTATL = VSTAT ‐ VSRC 0.1 0.2 V IIL Input Low‐level Leakage Current CLK Input; VCLK = VSRC ‐1 1 μA IIH Input High‐level Leakage Current VCLK = VGG ‐1 15 μA TSTAT STAT Pulse Width Switch in ON state 4*TCLK μs Output Switch RDS(on) Switch On‐Resistance Across SWx Pins 150 240 405 mΩ ISWX SW1/2 Leakage VSWX = 24V; VSRC=0V, TJ<85°C ‐3 3 μA IOUTOC Over Current Shutdown Threshold TJ=25°C 1 1.5 A IOUTPK Inrush Current Shutdown Threshold TJ=25°C 2 3 A OCFILT Over Current Deglitch 7 11 15 μs TIPK Inrush Duration 212/FCLK(2) 41 ms VCLAMP VSWX Clamp Voltage VSW1‐VSW2, VSW2‐VSW1 ; ISW=10mA 36 39 42 V (1) Not tested in production (2) CLK input must be present. Switch will be disabled (opened) if a CLK edge is not sensed within TCLKOFF.
www.semtech.com 5 of 12 Semtech TS13501 Final Datasheet 2.1 0.7 0.8 0.9 1.1 1.2 1.3 ‐40 ‐30 ‐20 ‐10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Temperature (oC) Normalized Over Current Shutdown Threshold vs. Temperature
www.semtech.com 6 of 12 Semtech TS13501 Final Datasheet 2.1 The TS13501 receives power through power transfer via the galvanically‐isolated interface. Galvanic power transfer depends on the GPIO driving the isolation capacitors to have sufficient drive capacity (current and voltage) to transfer needed power to the TS13501. This is usually not a problem due to the low quiescent current draw of the device. The CLK and its compliment signal, NCLK, perform two important functions. First, these form a differential signaling system which is more robust in its ability to reject transients present in the system. Second, it allows a voltage‐doubling of the GPIO supply to be created within the TS13501. This allows sufficient supply voltage for operation even if used with a micro‐controller with a 1.8V GPIO supply. The CLK and NCLK pins must be continually switched at their recommended frequency while the switch is closed. When the device has been unpowered for a period of time, the CLK and NCLK pins must be switched for a Pre‐Charge period, TPRE‐CHG, of time to transfer sufficient charge to allow operation to begin. Figure 1: Switch Command Sequences
www.semtech.com 7 of 12 Semtech TS13501 Final Datasheet 2.1 An initial pre‐charge period must be provided to the device in order to bring up the local supply, VGG. The switch will be closed a number of clock pulses, NCLKON, after the VGG voltage has reached its internal Power Good threshold. At this point, the switch will transition to the closed (ON) state. This sequence is shown in Figure 2. The on‐state of the switch can be verified by the presence of pulses on the STAT pin. The system designer has some control over the total delay time to close the switch (TPRE‐CHG + NCLKON / FCLK), which is influenced by the CLK amplitude, FCLK, Isolation capacitor value and VGG bypass capacitor value. NCLKON<TPRE‐CHG Power Good (Internal) VGG CLK ... STAT ONSwitch State OFF Figure 2: On Sequence The Off Sequence To transition the switch from a closed state to an open state, a valid Off Sequence must be received by the TS13501. The sequence consists of an interruption of the CLK input signal for a period of TCLKOFF. A static period of duration TCLKOFF will notify the device that the switch is to be transitioned to the open (OFF) state. Note that the STAT pin will indicate the switch state. The Off Sequence is illustrated in Figure 3. TCLKOFF STAT OFFSwitch State ON CLK Figure 3: Off Sequence
www.semtech.com 8 of 12 Semtech TS13501 Final Datasheet 2.1 The status of the switch may be determined by the STAT signaling from the TS13501. When a valid Turn‐On Sequence has been received, the switch will close and a signal received at the STAT output will indicate this condition. The STAT pin will continue to switch at a frequency of FSTAT = FCLK / 4 as long as a valid CLK input is driven to the device and the switch is in the closed (ON) state. The Status Functionality is shown in Figure 4. Figure 4: Status Functionality Load Current Protection The device has the ability to protect itself from excessive current due to load faults. Shorted Load The load current is continually evaluated when the switch is in the “ON” state. In the event that the load current exceeds the threshold limits (IOUTOC or IOUTPK), the switch will be opened and the state is indicated by the STAT pin, which will cease switching as shown in Figure 4. Inrush Current A system may present loads to the switch which result in high inrush currents when initially energized, but rapidly decrease to a lower level. If the inrush level is higher than the switch over‐current shutdown (IOUTPK), it may be impossible to activate the load. This device allows the activation of loads with inrush currents on the order of twice their normal operating current for a short period of time. During the inrush period, the switch over‐current shutdown is elevated, allowing current to build in the load, ensuring actuation. After the inrush delay period, TIPK, the over‐current threshold is reduced to a lower level to allow protection against faults. Figure 5 illustrates the time‐variant peak load current in an AC system and how the inrush over‐current shutdown threshold can be used to energize a load successfully when the higher inrush current would otherwise have tripped the lower steady‐state over‐current threshold (IOUTOC). As long as the load current stays within the red boundary area, the switch will remain closed.
www.semtech.com 9 of 12 Semtech TS13501 Final Datasheet 2.1 Figure 5: Inrush Waveform The device uses the CLK input signal to provide a time reference for the inrush period, TIPK. Therefore, TIPK is defined as: ூ ൌ 2ଵଶ If it is desired to change this time, it is possible to change the CLK input frequency to extend or shorten the inrush time period. Note that if there is no clock edge received by the TS13501 in 50μs, the switch will be opened. This is to prevent creating overly long inrush times and to protect the switch and load in the event that control is lost. It is recommended that the inrush period be only as long as is required by the load in the system. Typical inrush periods, TIPK, would be 41ms when a 100kHz CLK input is supplied. If the CLK input frequency is reduced to the minimum allowed (half‐period of 50μs), the time would be 410ms. The maximum CLK input frequency that can be used for peak inrush current timing is 1MHz, which would yield an inrush time of 4ms. Load Current (A) Time (s) Load Current vs. Time TIPK Inrush Over-Current Shutdown: IOUTPK Over-Current Shutdown Threshold: IOUT OC -IOUTOC -IOUTPK Load Current Inrush Steady-State Operation
www.semtech.com 10 of 12 Semtech TS13501 Final Datasheet 2.1 Package Drawing for SOIC‐8 EP Landing Pattern for SOIC‐8 EP
www.semtech.com 11 of 12 Semtech TS13501 Final Datasheet 2.1 Package Marking for SOIC‐8 EP Marking (Top View) Marking for the SOIC 8‐Lead Package: Part Number (TS13501) yyww = Date Code (Example: 1752, 52nd week of 2017) xxxxx = Semtech Lot No. (Example: E9010)
Ordering Information
TS13501STRT SOIC‐8 EP Tape & Reel (2500 parts/reel) TS13501‐EVB Evaluation Board
www.semtech.com 12 of 12 Semtech TS13501 Final Datasheet 2.1 Information relating to this product and the application or design described herein is believed to be reliable, however such information is provided as a guide only and Semtech assumes no liability for any errors in this document, or for the application or design described herein. Semtech reserves the right to make changes to the product or this document at any time without notice. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. Semtech warrants performance of its products to the specifications applicable at the time of sale, and all sales are made in accordance with Semtech’s standard terms and conditions of sale. SEMTECH PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFE‐SUPPORT APPLICATIONS, DEVICES OR SYSTEMS, OR IN NUCLEAR APPLICATIONS IN WHICH THE FAILURE COULD BE REASONABLY EXPECTED TO RESULT IN PERSONAL INJURY, LOSS OF LIFE OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. INCLUSION OF SEMTECH PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE UNDERTAKEN SOLELY AT THE CUSTOMER’S OWN RISK. Should a customer purchase or use Semtech products for any such unauthorized application, the customer shall indemnify and hold Semtech and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney fees which could arise. The Semtech name and logo are registered trademarks of the Semtech Corporation. All other trademarks and trade names mentioned may be marks and names of Semtech or their respective companies. Semtech reserves the right to make changes to, or discontinue any products described in this document without further notice. Semtech makes no warranty, representation or guarantee, express or implied, regarding the suitability of its products for any particular purpose. All rights reserved. © Semtech 2018 Contact Information Semtech Corporation
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