KTS1640 KINETIC | Alldatasheet

Document overview

  • Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
  • PDF pages: 14

Technical content

Features

  • Wide input operating range from 6V to 40V DC Input
  • Low resistance MOSFET Switch typ. 41mΩ
  • Reverse Polarity Protection to -28V
  • Fixed over-voltage protection − Fixed: 27V ± 0.8V or 20.3V ± 0.8V
  • Fast OVP response time typ. 360ns
  • Continuous output current up to 6A
  • Over-temperature Protection with Auto-Retry
  • Open drain fault flag
  • Shutdown pin with low shutdown current
  • Voltage Input detection output
  • Input ESD protection to IEC61000-4-2 (Level 4) − Contact: ±8kV − Air: ±15kV − Other pins HBM: ±2kV
  • Pb-free TDFN44-12 package
  • -40°C to +85°C operating temperature range

Applications

  • Reverse Power Supply Protection
  • Telecom/Server/Networking System
  • Industrial and Medical Systems
  • Portable Instrumentation Brief Description The KTS1640 and KT S1641 are low-resistance, electronically controlled load switch es, with enhanced protection features, used to protect loads from abnormal power supply or load problems. Operating from a wide input supply voltage of between 6V and 40V, the KTS1640 and KTS1641 protect the system from reverse input supplies down to -28V. Integrating two N-Channel MOSFETs, the device includes fixed over-voltage protection of 27V ( KTS1640) or 20.3V (KTS1641) along with over-temperature protection with auto-retry. Following an over -voltage condition only , KTS1640 and KT S1641 will automatically resume operation, when the over-voltage condition is removed. An ENABLE pin allows the MOSFET switch to be enabled or disabled, placing the device in a low current shutdown mode. System monitoring is provided by a fault FLAG. To inform the system that the battery or power supply is connected, BDET mirrors the input voltage less the drop across the reverse battery protection MOSFET and sources up to a maximum of 120mA Further protection includes over -temperature shutdown and the input pin is fully ESD protected to comply with the IEC61000-4-2 (Level 4) specification. The KTS1640 and KTS1641 are packaged in an advanced, fully green compliant, TDFN44-12 package. Typical Application CONTROL LOGIC and DRIVERS UVLO OVLO OTP FLAG GND EN VIN VOUTVIN 6V to +40V SYSTEM MCU BDET CIN COUTVIO 100nF Load Switch with OVP and Reverse Polarity Protection

t KTS1640, KTS1641 August 2022 - Revision 04f Page 2 Company Confidential Pin Descriptions Pin # Name Function 1, 2, 3, 4 VIN Input to the power switch and device supply. The VIN pins must be decoupled to GND via a minimum 1µF ceramic capacitor. 5 EN Active LOW enable pin. Connect to GND to turn the power switch ON.

6 GND Ground

7 BDET Battery Detection, and supply. Should be decoupled by a 100nF capacitor to GND EN = HIGH BDET = VIN - 0.7V EN = LOW BDET = VIN – (rDS x ID) 8 FLAG Active LOW, open drain fault pin. Connect an external pull-up resistor to the system logic supply. FLAG is asserted during any fault condition. 9, 10, 11, 12 VOUT Power switch output to the load. The VOUT pins must be decoupled to GND via a minimum 1µF ceramic capacitor. MC MC Metal chassis. Connect to ground for electrical and thermal usage. MC is internally connected to GND. TDFN44-12 Top View 12-Lead 4.00mm x 4.00mm x 0.75mm Top Mark KT Logo KTS164x = Part Number XX = Device ID Code, YWZ = Assembly Code YYWWXXX = Serial Number VIN VIN VIN VIN EN GND VOUT VOUT VOUT FLAG BDET VOUT MC KTS164x LXYWZ YYWWXXX

t KTS1640, KTS1641 August 2022 - Revision 04f Page 3 Company Confidential Absolute Maximum Ratings1 (TA = 25C unless otherwise noted) Symbol Description Value Units VIN Input Voltage to GND -30 to 42 V VIN to VOUT Input voltage to VOUT -30 to +42 V VOUT, Output Voltage to GND -0.3 to +30 V BDET BDET output voltage to GND -0.3 to +42 V FLAG, EN, FLAG, EN, pins to GND -0.3 to 7 V IBDET2 Battery Detect Continuous Current 120 mA IOUT VIN to VOUT Continuous Current 6 A TSTG Storage Temperature Range -55 to 150 C TJ Junction Operating Temperature -40 to 150 C TLEAD Maximum Soldering Temperature (at leads, 10sec) 260 C Thermal Capabilities3 Symbol Description Value Units θJA Thermal Resistance, Junction−to−Air 38 C/W PD Maximum Power Dissipation at 25℃ 3.29 W ΔPD/ΔT Derating Factor Above TA = 25℃ -26.3 mW/°C ESD Ratings Symbol Description Conditions Value Units VESD IEC61000-4-2 Air Discharge VIN Only ±15 kV IEC61000-4-2 Contact Discharge ±8 kV Human-body Model (HBM) All Pins ±2 kV Charged-device Model (CDM) ±1 kV 1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum rating should be applied at any one time. 2. Maximum output current pin limited. Output not short-circuit protected 3. Junction to Ambient thermal resistance is highly dependent on PCB layout. Values are based on thermal properties of the device when soldered to an EV board.

t KTS1640, KTS1641 August 2022 - Revision 04f Page 4 Company Confidential

Ordering Information

Part Number Marking4 OVP Fault Response Ambient Operating Temperature Package KTS1640EDV-TR LXYWZ 27V Auto Retry -40°C to +85°C TDFN44-12 KTS1641EDV-TR NAYWZ 20.3V Auto Retry -40°C to +85°C TDFN44-12 Recommended Operating Range Description System Condition Value Input Voltage NORMAL 6V to OVP PROTECTED -28V to +40V Continuous Output Current NORMAL Up to 6A BDET Output Current5 NORMAL 100mA max Operating Temperature ALL -40°C to +85°C 4. “XXYWZ” is the device code, date code and assembly code. 5. Output not short circuit protected

t KTS1640, KTS1641 August 2022 - Revision 04f Page 5 Company Confidential Electrical Characteristics6 Unless otherwise noted, t he Min and Max specs are applied over the full operation temp erature range of -40°C to + 85°C. Typical values are specified at room temperature (25 °C) with VIN = 14V, IOUT ≤ 5A, EN = LOW, FLAG = OPEN, CIN = 1.0µF, COUT = 1.0µF, CBDET = 100nF and TA = 25°C. Symbol Description Conditions Min Typ Max Units INPUT IQ Input Quiescent Current 145 200 µA ILK Input Leakage Current EN = HIGH, No load 5 8 µA ILK_RB Input Leakage Current in Reverse Battery VIN = -28V, EN = HIGH, No load 52 70 µA IOVLO_Q Input Supply Current in Over-voltage mode KTS1641 VIN = 20.3V 150 180 µA KTS1640 VIN = 27V 150 180 µA VIN_UVLO Under Voltage Lockout VIN Rising 5.5 5.7 5.9 V VIN Falling 5.3 5.5 5.7 V OUTPUT RON_OUT On-resistance VIN to VOUT IOUT = 1A TA = 25°C 41 50 mΩ IOUT = 5A 44.5 mΩ VOUT_OVLO Over-Voltage Trip Level VIN Rising KTS1640 26.2 27 27.8 V VIN Falling 25.6 V VIN Rising KTS1641 19.5 20.3 21.1 V VIN Falling 17.9 V IOUT_RC OUT Reverse Current VIN = 0V, VOUT = 28V, TA = 25°C 38 µA DIGITAL SIGNALS (FLAG, EN) VFLAG_OL FLAG Output Low Voltage VIO = 5V, sinking 1.0mA 0.5 V IFLAG FLAG Leakage Current VIO = 5V 1 µA VEN_IH EN High Voltage VIO = 5V 1.2 V VEN_IL EN Low Voltage VIO = 5V 0.35 V IEN EN Leakage Current VIO = 5V 4 µA TIMING CHARACTERISTICS (Figures 1 – 3) tOUT_DB VOUT Debounce Time Time from VIN = VIN_UVLO to 10% of VOUT, 2 ms tON_OUT OUT Switch Turn-on Time VOUT from 10% of VIN to 90% of VIN, RL = 100Ω, CL = 22µF 10 ms tOFF_OUT_F OUT Switch Turn-Off Time Under Fault Conditions or by EN 7 VIN > VOUT_OVLO to VOUT Stop rising, RL = 100Ω, No CL, EN = Low 360 ns 6. KTS1640 and KTS1641 are guaranteed to meet performance specifications over the –40°C to + 85°C ambient operating temperature range by design, characterization and correlation with statistical process controls. 7. Guaranteed by characterization and design

t KTS1640, KTS1641 August 2022 - Revision 04f Page 6 Company Confidential Electrical Characteristics6 Unless otherwise noted, the Min and Max specs are applied over the full operation temperature range of -40°C to + 85°C. Typical values are specified at room temperature (25 °C) with VIN = 14V, IOUT ≤ 5A, EN = LOW, FLAG = OPEN, CIN = 1.0µF, COUT = 1.0µF, CBDET = 100nF and TA = 25°C. Symbol Description Conditions Min Typ Max Units TIMING CHARACTERISTICS Cont. (Figures 1 – 3) tEN(ON) Switch Turn-ON EN High to Low, VOUT 14 ms tEN(OFF) Switch Turn-OFF EN Low to High, VOUT falls to 90% VOUT, RL = 100Ω, No CL 350 ns THERMAL SHUTDOWN TSHDN Shutdown Temperature 150 °C Shutdown Temperature Hysteresis 20 °C

t KTS1640, KTS1641 August 2022 - Revision 04f Page 7 Company Confidential Typical Characteristics VIN = 14V, EN = GND, CIN = 1µF, COUT = 1µF, CBDET = 100nF, TA = 25°C unless otherwise specified. Input Supply Current vs. VIN (no load)8 Input Supply Current vs. Temperature Normalized RON_OUT vs. Output Current Normalized RON_OUT vs. Temperature Normalized OVLO Threshold vs. Temperature Enable Logic Threshold vs. VIN 8. Shown for KTS1640 -100 -50 100 150 200 -30 -20 -10 0 10 20 30 40 IQ (μA) VIN (V) +85°C +25°C -40°C 100 110 120 130 140 150 160 170 180 190 200 -50 -35 -20 -5 10 25 40 55 70 85 IQ (μA) Temperature (°C) Normalized to TA = +25°C 0.0 0.5 1.0 1.5 2.0 0 1 2 3 4 5 Normalized RON_OUT Output Current (A) 0.0 0.5 1.0 1.5 2.0 -50 -35 -20 -5 10 25 40 55 70 85 Normalized RON_OUT Temperature (°C) IOUT = 1A Normalized to TA = +25°C 0.90 0.95 1.00 1.05 1.10 -50 -35 -20 -5 10 25 40 55 70 85 Normalized VOUT_OVLO Temperature (°C) Normalized to TA = +25°C 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 6 11 16 21 26 VEN (V) VIN (V) VEN_IL VEN_IH Normalized to 1A

t KTS1640, KTS1641 August 2022 - Revision 04f Page 8 Company Confidential Typical Characteristics VIN = 14V, EN = LOW, CIN = 1µF, COUT = 1µF, CBDET = 100nF, TA = 25°C unless otherwise specified. Normalized Debounce Time vs. Temperature Power Up and Down (100Ω load) Turn On and Off by Enable OVP Transient8 Power-up with BDET 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 -40 -15 10 35 60 85 tOUT_DB Temperature (°C) Normalized to TA = +25°C IOUT 100mA / div 4ms / div VOUT 10V / div VIN 10V / div FLAGതതതതതതതത 5V / div IOUT 100mA / div 4ms / div VOUT 10V / div ENതതതത 5V / div FLAGതതതതതതതത 5V / div 1µs / div VIN 10V / div VOUT 10V / div FLAGതതതതതതതത 5V / div 2ms / div BDET 5V / div VIN 5V / div VOUT 5V / div

Figure 3. Over-voltage and Over-temperature, ENതതതത = L

t KTS1640, KTS1641 August 2022 - Revision 04f Page 11 Company Confidential Functional Block Diagram CONTROL LOGIC and DRIVERS UVLO OVLO OTP FLAG GND EN VIN VOUT BDET VIN VIN VOUT VOUT VIN VOUT Functional Description The KTS1640 and KTS1641 are low-resistance, electronically controlled load switches, with enhanced protection features, used to protect loads from abnormal power supply or load problems. Operating from a wide input supply voltage of between 6V and 40V, the KTS1640 and KT S1641 protects the system from reverse input supplies down to -28V, over-voltage conditions, and over-temperature. The KTS1640 and KTS1641 integrates two low-resistance, active LOW enabled, N-Channel MOSFETs, in common drain configuration. The first MOSFET will provide protection to the system if the input supply is accidentally reversed. The second MOSFET provides the controlled turn-on and protection of the input voltage to the system load. The KTS1640 includes fixed over-voltage protection of 27V±0.8V, while the KTS1641 includes fixed over-voltage protection of typical 20.3V. Both devices also include over-temperature protection with auto-retry10. An ENABLE EN pin allows the MOSFET switch to be enabled or disabled, placing the device in a low current shutdown mode. System monitoring is provided by a digital output fault FLAG. When a fault condition occurs, the fault FLAG is pulled down to GND. An external pull-up resistor connected to the system power supply is required. Further protection includes ESD protection and the input pin is fully protected to comply with the IEC61000-4-2 (Level 4) specification. Internal MOSFET Switch In normal operating mode (main power switches turned on), the EN input must be set to the logic low state (EN = GND). The KTS1640 and KTS1641 integrate two N -Channel power MOSFET s in a back -to-back configuration with ultra -low 41mΩ (typical) on-resistance between VIN and VOUT. The MOSFETs are internally driven by a charge pump supply that generates a gate voltage (VGS) greater than VIN. To prevent downstream systems from being damaged by a reverse voltage condition, the KTS1640 and KTS1641 include an integrated synchronous MOSFET diode to protect against voltages down to -28V. 10. For an alternative response to fault conditions, please contact marketing

t KTS1640, KTS1641 August 2022 - Revision 04f Page 12 Company Confidential Under-voltage Lockout When the input voltage VIN is below the normal operating range, either during operation or start-up, the internal switch will turn-off and the fault flag asserted low. The UVLO is internally set to 5.7V typical with 200mV hysteresis. Over-voltage Lockout Protection The KTS1640 and KTS1641 features a fixed over-voltage threshold of 27V typical (KTS1640) or 20.3V typical (KTS1641). If VIN is above this threshold, the internal MOSFET switches are turned OFF and VOUT is disconnected from VIN, protecting the load. FLAG is asserted low during the over -voltage period. Once the over-voltage condition is removed the switch will automatically restart. Battery Present Output BDET provides an unregulated output, whenever VIN is present. When the switch is enabled, BDET is equal to VIN less the voltage dropped across the input MOSFET (V = rDS x ISW). When the switch is disabled, BDET is equal to VIN less one diode drop, due to the reverse battery protection MOSFET (BDET = VIN – VF (~0.7V)). This output is capable of supplying up to a maximum of 120mA output current. However, care should be taken not to exceed this value as this pin is not short -circuit protected. Over-temperature Protection During an over-temperature event, KTS1640 and KTS1641 will immediately turn OFF both sw itches and FLAG will be asserted low. The over-temperature threshold is 150°C typical. Once TJ falls by 20°C the device automatically retries and will continually retry indefinitely. The FLAG signal remains asserted low until the fault condition is removed and the device resumes normal operation.

t KTS1640, KTS1641 August 2022 - Revision 04f Page 13 Company Confidential

Application Information

A 1μF or larger capacitor is typically recommended for CIN. CIN should be located as close to the device VIN pin as practically possible. 50V rated capacitors are recommended to support input voltage up to 40V. Output Capacitor The soft-start function provides a slow turn-on that allows the device to charge large output capacitors with minimum in-rush current. It is recommended to bypass VOUT pin with a 1µF minimum ceramic capacitor with 35V rating. Recommended PCB Layout For high output current, the power dissipation may be large. The TDFN package allows to dissipate well the heat to the PCB when using proper PCB layout technic. To improve the board thermal conductivity, large copper area around GND, VIN and VOUT pins are recommended. Thermal vias under the package exposed center pad help to spread the heat throughout the board ground plane. Figure 4. Recommended PCB Layout

t KTS1640, KTS1641 August 2022 - Revision 04f Page 14 Company Confidential

Package Information

TDFN44-12 (4.00mm x 4.00mm x 0.75mm) Recommended Footprint D E A Top View Bottom View Side View A3 e K Side View Pin 1 Index Area Chamfer C = 0.25 b L imensions are in millimeters 0 5 400 0 50 500 0 50 1 5 Dimension mm Min. Typ. Max. A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A3 0.203 REF b 0.25 0.30 0.35 b1 0.35 0.40 0.45 D 3.90 4.00 4.10 D2 2.25 2.30 2.35 E 3.90 4.00 4.10 E2 3.35 3.40 3.45 e 0.650 BSC. L 0.45 0.50 0.55 K 0.035 REF Kinetic Technologies cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Kinetic Technologies product. No intellectual property or circuit patent licenses are implied. Kinetic Technologies reserves the right to change the circuitry and specifications without notice at any time.