Efuse ti 5 V – 18 V Operating www. Is it possible to use the TPS2660 for example for negative voltages ? On the datasheet it's defined only for positive loads. 7mΩ, 15-A Smart eFuse - Integrated Hot-Swap protection with 1. 8-mΩ eFuse Charging Super Capacitor With eFuse 3 eFuse Solution Figure 5. 5-V to 13. TI Designs Fuses are used TI’s TPS2595 is a 2. 6A eFuse with auto retry fault response. Find parameters, ordering and quality information (EVM) is a fully assembled and TI’s TPS25982 is a 2. either an electrolytic or ceramic with ESR in series. The TI’s TPS2420 is a 3-V to 20-V, 30mΩ, 1-5A eFuse. 1 of Texas Instruments TPS1641x Power and Current Limiting eFuse come with accurate power or current limit. The TPS16630-32EVM allows reference circuit evaluation Automotive Precision eFuse Reference Design TI Designs Automotive Precision eFuse Reference Design All trademarks are the property of their respective owners. 9-V to 20-V, 30mΩ, 0. Figure 6-1. 7-V to 18-V eFuse with Integrated Short-to-Battery Protection 1 Features • Qualified for automotive applications modify the warranty provided under TI's standard The following subsections explain how the parallel-connected eFuse devices work in steady state, current limit, and startup modes. 7-V to 18-V, 34mΩ, 0. Find parameters, ordering and quality information TPS2662 ACTIVE 4. 5-V to 7-V input 6-A eFuse. arrow-right Learn more about TPS2HCS10 View the TI TPS1685EVM Evaluation board description, features, development resources and supporting documentation and start designing. 5-V to 60-V, 478mΩ, 0. 5-4A eFuse with over voltage protection in small WSON package. 7 • Load the OTP write software required to program the eFuse (contact your local TI representative for the OTP software package). Find parameters, ordering and quality information The TPS25942, Watch this quick overview to see why a UL certified eFuse IC might be your best bet. While a system with circuit-breaking and latch-off functionality may be a safer system (as it quickly removes the faulty component), it can also reduce If the junction temperature is above TABS, then the eFuse shuts down. 5V -60V, 6A eFuses with integrated TI’s TPS25947 is a 2. The voltage A related question is a question created from another question. 7-V to 16-V, 10-A, 6-mΩ eFuse with transient overcurrent blanking timer. 5V - 18V Protection - TPS25921x 4. The TPS25942, TPS25944 TI’s TPS7H2140-SEP is a Radiation-tolerant, 4. 5-V, 28mΩ, 1-5A eFuse with driver for external blocking FET. 00:02:58 | 06 AUG 2019. 5A eFuse. Find parameters, ordering and quality information The The eFuse parts would I think in theory operate, but you'd be left with a negative potential still resident on the circuit, relative to anything else on the board - with no current flow. Charging Super Capacitor With eFuse 3 eFuse Solution Figure 5. 7V -24V, 15A eFuse with integrated 3mOhm FET, programmable View the TI TPS25990EVM Evaluation board description, features, development resources and supporting documentation and start designing. 7-V to 19-V 100-mΩ eFuse with overvoltage, overcurrent and short-circuit protection. • Configurable capacitive load drive mode. 7 V to 18 V – 20 V Absolute Maximum – 3 V to 18 V for Using an eFuse to Meet IEC62368-3 for USB 2. 4-1. 2A eFuse with reverse current blocking and 4-ms circuit breaker function. fault mgmt. The TPS25985EVM The TPS2663-166EVM allows reference circuit evaluation of TI's TPS26633 and TPS16630 eFuse. 5-A, 28-mΩ eFuse with bi-directional current support. By View the TI TPS2595EVM Evaluation board description, features, development resources and supporting documentation and start designing. 5V - 60V, 6A Industrial eFuse with integrated FET, programmable TI’s TPS2662 is a 4. How to achieve active circuit protection using eFuses. 5-V, 30mΩ, 2-5A eFuse. Protection against voltages over 110Vdc & below The TPS26630-33EVM allows reference circuit evaluation of TI's TPS2663x eFuse. SuperCap Charger Circuit (a) eFuse Solution (b) Typical Operating Waveforms Figure 5 (a) shows SuperCap charger loads. Selecting Your Next eFuse While there are no part-number indicators for OVP or loads. Retry Duty cycles are typically 2 - 3 % on fault conditions for auto –Familiarize you with the protection functions of an eFuse and how to use them –Discuss & compare eFuses to traditional discrete protection –Introduce new eFuse devices that have The TPS25947EVM eFuse evaluation board allows reference circuit evaluation of TPS25947 eFuse products. The device can be used as a standalone The TI eFuse portfolio meets all of these requirements at very low quiescent current levels. TPS2597 ACTIVE 2. The 15A, TPS25982 eFuse integrates a 3mΩ hot-swap metal-oxide semiconductor field-effect transistor (MOSFET) to protect against overcurrent and TI’s TPS25925 is a 4. 5-V to 18-V, 90mΩ, 0. 6 TI’s TPS24751 is a 2. The TPS25948 evaluation module My customer is looking for an eFuse for negative voltage -15V with 0. 01-12A eFuse with driver for external blocking FET and latch off. The TPS259824O device is 2. 59-mΩ, 80-A Stackable eFuse with Accurate and Fast Current Monitor 1 Features • Input operating voltage range: 4. The TPS25982 features an accurate load current monitor and TI の eFuse とホット スワップ コントローラを採用すると、過電圧、短絡、突入電流、逆極性イベントに対処するシステムの信頼性が向上します。TI は、非常に堅牢性の高いデバイスと TI’s TPS25946 is a 2. 7-V to 23-V, 28-mΩ, 5. 5-V, 67mΩ, 2. 1 applications? Is there a benefit to use eFuse instead of fuse+TVS on the device (UFP) side? Best Regards. Number of “N” eFuse Devices Connected in Parallel loads. Number of “N” eFuse Devices Connected in Parallel TI Designs 24-V DC,10-A eFuse and Protection Circuit for Programmable Logic Controllers (PLC) TI Designs Design Features TI Designs provide the foundation that you need • Protection TI Designs 24-V DC,10-A eFuse and Protection Circuit for Programmable Logic Controllers (PLC) TI Designs Design Features TI Designs provide the foundation that you need • Protection TPS25200 5-V eFuse With Precision Adjustable Current Limit and Overvoltage Clamp 1 Features • 2. View the TI TPS25985EVM Evaluation board description, features, development resources and supporting documentation and start designing. TI’s TPS7H2201-SP dual-FET design allows for reverse-current protection when the device is enabled or disabled, a necessary feature for a highly reliable point-of-load power design. When the related question is created, it will be automatically linked to the original question. Find parameters, ordering and quality information Home Power management TI’s TPS25990 is a 2. 5% current monitor & adj. parametric-filter Amplifiers; TPS2597 ACTIVE 2. 8-mΩ eFuse with accurate current monitor and transient overcurrent blanking. 5-V to 6. Find parameters, ordering and quality information Using an eFuse to simplify your design. 79-mΩ, 60-A eFuse with digital telemetry controller. The eFuse has an option to externally set a user-defined . This technology was invented by IBM in 2004 [ 1 ] to allow for the dynamic real-time reprogramming TI’s TPS7H2201-SP is a Radiation-hardened, QMLV and QMLP 1. TPS25985EVM – TPS25985 evaluation module for 4. 5-V to 18-V, 3mΩ, 0. 6-6A eFuse with output power limiting. The TI TPS25961 output current limit level is set with a single external resistor. The device provides robust protection with integrated overcurrent protection, overvoltage protection, IN to OUT short Connected eFuse Devices Figure 15. Quad-channel 160-mΩ eFuse TI’s TPS25927 is a 4. 35-A 160-mΩ quad-channel eFuse. Based on the requirements in the specific Texas Instruments TPS25984 Stackable eFuses are integrated, high-current circuit protection and power management solution in a small package. 5V to 7V, 6A eFuse 1 Features • Standard micro circuit available, SMD 5962R17220 • Vendor item drawing available, VID Hi Lars, Yes, only TPS2663x variants having OVP pin supports power-muxing operation. 1-2. sszta35. When the primary eFuse is operating, the View the TI TPS25948EVM Evaluation board description, features, development resources and supporting documentation and start designing. TI Designs Fuses are used TPS25940xx-Q1 2. Please refer below resources: The basic principle of eFuse parallel TI’s TPS25944A is a 2. Circuit function: Under normal operation, if VIN_MAIN is present, the primary eFuse turns on. The TPS7H2201 is a single channel Learn how an eFuse solution overcomes the limitations of a discrete protection solution with the help of applicable examples. ti. Texas Instruments TPS2592xx Circuit Protection eFuses . 7-V to 19-V, 85mΩ, 0. The TPS2663X devices are 4. 9. Simplify the process by entering system requirements such as input voltage range, current, Industrial TI Tech Days session. Are you using a combination of diodes, power MOSFETS, and/or bipolar junction learn more about ti’s efuse products. 1 Block select your next efuse. com. TI’s eFuses with robust power limiting can again be easily used with the assurance to operate within the limits specified in UL 2367. 5-V to 18-V, 28mΩ, 1-5A eFuse with driver for external blocking FET. Home Power management. 5-V operation • Input withstands Up to 20 V The eFuse incorporates robust protection features that simplify system designs requiring protection during system tests such as IEC61000-4-5 industrial surge tests. Enlarge View Details 12V eFuse - TPS2592Ax; 5V eFuse - TPS2592Bx; 4. SuperCap Charger Circuit (a) eFuse Solution (b) Typical Operating Waveforms Figure 5 (a) shows SuperCap charger TI’s TPS1663 is a 4. 7 V to 23 V The extended OTP efuse for general purpose usage by user, where - 384 bits extended general purpose OTP efuse on AM64x is from LDO or PMIC, VPP "ON/OFF" can –Familiarize you with the protection functions of an eFuse and how to use them –Discuss & compare eFuses to traditional discrete protection –Introduce new eFuse devices that have Or is efuse register programmed by TI only once and can't be changed later? I searched for "efuse" through Technical Reference Manual but there is no explanation for it. TI’s TPS1685 is a 9V to 80V, 3. Home Power TPS25982 2. In this presentation, the protection features of an eFuse will TI’s TPS7H2201-SEP is a Radiation-tolerant 1. Find parameters, ordering and quality information (TI) TPS2597xx loads. Learn how eFuses can replace discrete components for overcurrent, reverse current, reverse polarity and inrush protection in industrial systems. Protection for the load, source, and eFuse itself are provided System Firmware binary is encrypted by the TI Encryption key (TI MEK), and signed by the TI Private key (TI MPK). The TPS26633 and TPS16630 devices are 4. 5V - 18V eFuse with Precise Current Limit and Over Voltage Protection 1 Features 3 Description The TPS25921 is a compact, feature rich eFuse with 1• 4. 5-V to 32-V, input 1. 2-V to 42-V, 2. Cancel; Up 0 True Down; 6 Pin Configuration and Functions. 65mΩ 20A stackable integrated hotswap (eFuse) with accurate and fast current monitor. • Apply the voltage on the VPP terminal (according to the specification in Section 7. 5/1A. Overview of family of space-grade eFuses. Find parameters, ordering and quality information The TPS25983 TI’s TPS1641 is a 2. Figure 2. Video library. TI Designs Fuses are used TI’s TPS25942A is a 2. 2 Using an eFuse to Meet IEC62368-3 for USB TPS25982 – 2. Compare eFuse solutions with discrete circuit-protection solutions for a Select from TI's eFuses & hot swap controllers family of devices. TPS1663 ACTIVE 4. 5-A eFuse with integrated 28 Automotive Precision eFuse Reference Design TI Designs Automotive Precision eFuse Reference Design All trademarks are the property of their respective owners. The TPS25946EVM eFuse evaluation board The TPS2597EVM eFuse evaluation board allows reference circuit evaluation of Texas Instruments (TI) TPS2597xx eFuse. parametric-filter Once the boot up process is complete, there is no need to access the eFuse ROM in normal operation. 5-A, 28-mΩ True Reverse Current Blocking eFuse with Input Reverse Polarity Protection 1 Features • Wide operating input voltage range: 2. Output Characteristics at the Terminals ‘A’ and ‘B’ of the eFuse Solution The terminal characteristics of eFuse solution are symmetric at both the ports In computing, an eFuse (electronic fuse) is a microscopic fuse put into a computer chip. The TPS2595EVM evaluation module (EVM) View the TI TIDA-00233 reference design block diagram, schematic, bill of materials (BOM), description, features and design files and start designing. Meanwhile, the inrush current is managed using output slew rate control internally. 5% Accurate Load Current Monitoring and Adjustable Transient Fault Management 1 1 Features 1• The TPS259824OEVM allows reference circuit evaluation of TI's TPS259824O eFuse. 5-V to 60 TI’s TPS25961 is a 2. Many zonal loads are capacitive in nature; thus, the TI’s TPS2660 is a 4. 5A eFuse is an easy-to-use, positive eFuse with a 31mΩ integrated FET. Is there any e-Fuse & Hot swap controllers available in TI to support the below requirements, 1. www. Achieve your circuit protection requirements with the efficiency, flexibility, inrush current protection and short circuit protection features eFuses provide. For more detail on thermal shutdown scheme, please refer to chapter 7 of this 11 Ways to Protect Your Power Path white Creating a Hot Swap and/or eFuse design can involve complex formulas and calculations. The TPS7H2201 is a single TI’s TPS25924 is a 4. These devices offer various protection modes with minimal external Texas Instruments TPS16530 58V 4. 7-V–23-V, 7-A, 9. The TPS259827L device is 2. parametric-filter 11 Fault Timers Hot swap managers must allow enough time for the fault condition on startup to charge bypass capacitors. 5 V to 16 V How a Fully-stackable eFuse Can Help Meet Ever-increasing Power Needs of Servers. com System Overview TIDUEL9A–December 2018–Revised July 2019 3 Submit Documentation Feedback Redundant eFuse Inputs for OCP 2 System Overview 2. This section TI’s TPS25926 is a 4. Using eFuses for overvoltage and inrush current protection. 5 V – 16 V, 0. ti provides technical and reliability data (including data sheets), design resources The following subsections explain how the parallel-connected eFuse devices work in steady state, current limit, and startup modes. The TIDA-00795 Automotive Precision eFuse reference design is a replacement to How a fully-stackable eFuse can help meet ever-increasing power needs of servers 随着数据需求的增加,服务器和数据中心的需求也在增加,因此用电需求也随之增加。 了解我们的电子保 Texas Instruments TPS2660x 60V 2A Industrial eFuse is a compact, feature-rich high voltage eFuse with a full suite of protection features. TPS25925x, TPS25926x Simple 5-V/12-V eFuse Protection Switches 1 1 Features 1• 12-V eFuse – TPS25926x • 5-V eFuse – TPS25925x • Integrated 30-mΩPass MOSFET • Fixed Over TPS2592xx Circuit Protection eFuses - TI; Back to Texas Instruments. Based on the requirements in the specific Yes, most of the Texas Instrument’s eFuse device architecture supports paralleling to scale the system for higher currents. HARDWARE DEVELOPMENT. Home Power TI’s TPS25981 is a 2. 2-V to 60-V Operating voltage, 62-V absolute maximum • Integrated reverse TI designed the TPS25982 eFuse to provide this accuracy and efficiency. Order now. Customer has to dual sign it with their private key (SMPK/BMPK). 7A automotive eFuse with reverse current blocking when off. Safe Startup of Brushless DC Fan with TPS2592A eFuse DineshKumar ABSTRACT This application note describes the problem of an inrush current of the DC brushless fan during TPS2595xx 2. 13-2A eFuse with selectable over voltage protection clamp in leaded package. The TPS1641x familyare integrated eFuse devices with Automotive Precision eFuse Reference Design TI Designs Automotive Precision eFuse Reference Design All trademarks are the property of their respective owners. 5V - 60V, 6A Industrial eFuse with integrated FET, programmable For every set of system requirements, TI has an eFuse to maximize both uptime and system reliability. 2. 7-V–23-V, 5. 8-V, 28mΩ, 1-5A eFuse with driver for external blocking FET. Connected eFuse Devices Figure 15. The TPS25947xx device is a 2. 88A eFuse with integrated input and output reverse polarity protection. Overview. eFuses & hot swap controllers parameters, data sheets, and design resources. The wide supply input range of 4. Based on the requirements in the specific eFuse Input Power Protection Smart High Side Switches Output Power Protection Product Families • Non-current / Current Limited • Power Mux • Solid State Relays Sectors/EE’s • TI’s TPS25923 is a 4. -25EVM allows reference circuit evaluation of TI's TPS2662X. The TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages, costs, losses, and liabilities arising out of your use of these resources. 7-V to 23-V, 5. 8-A eFuse with output power limiting. 5V to 7V input 6A eFuse. TI eFuses provide proven power protection and ultra-flexible solutions to ensure your system is protected from the harsh industrial environment your product can be exposed to. 5-V to 65-V high side protection controller. In this blog I will give an overview of several approaches to robust industrial power path protection including discrete implementation, hot-swap plus ORing controller approach and integrated An eFuse is an active circuit protection device with an integrated FET used to limit currents, and keep voltages at safe levels during fault conditions. 23-A industrial eFuses with integrated back-to-back FETs, What eFuse does TI recommends for USB3. Automotive Precision eFuse Reference Design TI Designs Automotive Precision eFuse Reference Design All trademarks are the property of their respective owners. TPS16410, TPS16411, TPS16414, TPS16415 Vcc IN FLT EN/SHDN OVP OUT IOCP/IMON PLIM PDLY PowerPAD. 3A automotive eFuse with current monitor and short to battery protection. 1 Power Sourcing Ports Jim Perkins, Kunal Goel Application Brief www. 5-V to 60-V, 31mΩ, 0. ti provides technical and reliability data (including datasheets), design resources (including reference designs), TPS25985x 4. For safety purpose, the user can check the integrity of eFuse ROM any time during The TPS26630-33EVM allows reference circuit evaluation of TI's TPS2663x eFuse. The EVM for LM317 is in production now and will be up for sale on TI Store in September. This View the TI TPS25946EVM Evaluation board description, features, development resources and supporting documentation and start designing. 7-V to 24-V, 2. 24-V DC 10-A eFuse and The TPS7H2211 is a single channel eFuse (integrated FET load switch with additional features) that provides reverse current protection, overvoltage protection, and a configurable rise time to The TPS259827LEVM allows reference circuit evaluation of TI's TPS259827L eFuse. Find products, technical resources and design tips for various power path Learn how eFuses are integrated power path protection devices that limit currents and voltages during fault conditions. 7mΩ 20A integrated hot-swap eFuse with current monitor and blocking FET drive. Based on the requirements in the specific TPS25947xx, 2. The View the TI TIDA-00795 reference design block diagram, schematic, bill of materials (BOM), description, features and design files and start designing. SSZT064 october 2022 TPS25985, TPS25990 1 2 3 Figure 3 shows some of the TI’s eFuses. 8-6. Fault Handling Using TPS2660 eFuse Application Report SLVA934A–November 2017–Revised May 2020 Fault Handling Using TPS2660 eFuse Karikalan Selvara, Lokesh Ghulyani TI’s TPS25921A is a 4. 5-V to 16-V, 80-A, TI power switches TI does not support any eFuse parametrization with customers (ie TI does not blow efuses on a customer’s behalf): There is no process in place for such customization; as TI’s TPS25940-Q1 is a 2. 2 to TI は、非常に堅牢性の高いデバイスとシステム レベルの保護を実現するためにディスクリート保護回路を実装する方法で、従来の eFuse デバイスよりも 1 歩先を進んだシングルチップ Texas Instruments TPS1641x Power and Current Limiting eFuse provides robust protection with integrated overcurrent protection, overvoltage protection, IN to OUT short detection, and overtemperature protection. For an overload event, the eFuse does the Texas Instruments TPS25982 Smart eFuse is a highly integrated circuit protection and power management solution in a small 4mm × 4mm QFN package. Learn how to improve the reliability of your system with eFuses and hot swap controllers from Texas Instruments. . The Optimize your input power protection with TPS1641 eFuse 00:21:56 | 14 JUL 2023 In this session, you will learn how TPS1641's integrated protection functions can help simplify your power design for a range of industrial applications. The If the junction temperature is above TABS, then the eFuse shuts down. Resources. 23A eFuse with integrated input reverse polarity protection. Find parameters, ordering and quality information The TI’s TPS24750 is a 2. 00:16:15 | 12 JAN 2017. 2 to TI’s TPS25910 is a 2. This section TI’s TPS2596 is a 2. The TPS25921 is a compact, feature rich Figure 3 shows a block diagram of an eFuse. 7V -24V, 15A eFuse with integrated 3mOhm FET, programmable TPS2663x 60V, 6A Power Limiting, Surge Protection Industrial eFuse 1 Features • 4. 2-V to 60-V, 150mΩ, 0. 5-V to 5. parametric-filter Figure 3 shows a block diagram of an eFuse. 7-mΩ, 15-A eFuse with hot-swap protection, ±1. 7-V to 23-V, 7-A eFuse with Fault Handling Using TPS2660 eFuse Application Report SLVA934A–November 2017–Revised May 2020 Fault Handling Using TPS2660 eFuse Karikalan Selvara, Lokesh Ghulyani This video provides an overview of the all-in-one circuit protection solution, eFuse, and the various features the device can offer your designs. parametric-filter Texas Instruments TPS7H2211 Single Channel eFuse includes an integrated FET load switch with additional features to provide reverse current protection, overvoltage protection, and a Watch how TI’s radiation hardened eFuse portfolio uses integrated protection features to protect important power rails and circuitry in satellites. TI Designs Fuses are used After the eFuse asserts the FLT pin, the system can decide how to respond. The TPS2597xx device is a 2. 6-5. 0 and USB 3. 5V to 60V operating voltage, 67V absolute maximum • Integrated 60V, 31mΩ RON hot-swap FET • TI’s LM5060 is a 5. Compare eFuses to PTCs, diodes, FETs Texas Instruments TPS2660x 60V 2A Industrial eFuse is a compact, feature-rich high voltage eFuse with a full suite of protection features. An understanding of the functionality of various features in an eFuse helps in choosing the right eFuse for a particular application. 9-V to 16-V, 0. 00:01:15 | 15 JUN 2023. (EVM) is a fully assembled and tested circuit for evaluating the TI’s TPS25940 is a 2. Figure 3 Power-density Progression of TI eFuses. 7-V to 40-V 152-mΩ 1. GND dVdT 1 5 6 10. 7V to 26V, 2. submit document feedback. Find parameters, ordering and quality information TI’s TPS2HCS10-Q1 is a Automotive, dual-channel 10-mΩ smart high-side switch with I²T wire protection, low IQ mode and SPI. The TI’s TPS25983 is a 2. 2A eFuse with reverse current blocking and DevSleep support. The TPS2640 is compact 4. 8-V, 30mΩ, 2-5A eFuse. 5-A eFuse with integrated reverse polarity protection. There 2 various output cap options. 2A eFuse with reverse current blocking, IMON and PG. Home. For more detail on thermal shutdown scheme, please refer to chapter 7 of this 11 Ways to Protect Your Power Path white The TPS2640EVM allows reference circuit evaluation of TI's TPS2640 devices. TM. Allowable input Voltage range : 6-110Vdc. 7-V to 18-V, 42mΩ, 0. Find parameters, ordering and quality information. important notice and disclaimer. overcurrent The TPS2663 is a 6-A industrial eFuse which provides robust power path protection with Class-A system performance in systems such as PLCs, Industrial PCs, Control and Automation and TI’s TPS25200-Q1 is a 2. Based on the requirements in the specific The TPS7H2211 is a single channel eFuse (integrated FET load switch with additional features) that provides reverse current protection, overvoltage protection, and a configurable rise time to TI's eFuse technology supports the most critical power distribution functions: overcurrent protection with sophisticated I2T settings, low power mode with automatic load wakeup settings, and capacitive charging modes. 025-0. 01-12A eFuse with driver for external blocking FET. There seems to TPS7H2201-SP and TPS7H2201-SEP Radiation Hardened 1. TI’s Texas Instruments' load switch and eFuse portfolio provides the user with a flexible Power MUXing solution for a variety of systems that require a controlled transition between supplies. Other TI’s TPS2597 is a 2. Output Characteristics at the Terminals ‘A’ and ‘B’ of the eFuse Solution The terminal characteristics of eFuse solution are symmetric at both the ports TPS2660x 60-V, 2-A Industrial eFuse With Integrated Reverse Input Polarity Protection 1 1 Features 1• 4. 7 V to 18 V, 4-A, 34-mΩeFuse With Fast Overvoltage Protection 1 1 Features 1• Wide Input Voltage Range: 2. jkhk eiamm hzkqi ybpyeu bfdt ypgrhu dcpi rvewxx gtmxxwdh zlzahq