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Texas Instruments ISO5452DW
- Part No.:
- ISO5452DW
- Manufacturer:
- Texas Instruments
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ISO5452DW.pdf
- Description:
- DGTL ISO 5.7KV 1CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,914
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Product details
Overview
ISO5452DW from Texas Instruments is a reinforced isolated gate driver IC for IGBTs and MOSFETs, featuring split outputs (OUTH/OUTL), 2.5-A peak source / 5-A peak sink current, 76-ns typical propagation delay, 50-kV/μs minimum CMTI, and integrated desaturation protection with soft turn-off. It enables high-reliability motor control and solar inverter switching in harsh industrial environments.
For engineers reviewing the ISO5452DW datasheet, ISO5452DW pinout, ISO5452DW application, or ISO5452DW equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated SOIC-16 pin functions, safety-certified isolation parameters, and two confirmed alternative gate drivers for IGBT/MOSFET drive in high-noise power stages.
Technical Context
The ISO5452DW implements a dual-channel reinforced isolator with independent input logic (IN+, IN−) controlling complementary OUTH and OUTL outputs via a high-speed digital isolation barrier. Its internal desaturation detection circuit monitors IGBT collector-emitter voltage through the DESAT pin, triggering mute logic and a 2-μs soft-turn-off sequence that disables OUTH and pulls OUTL to VEE2 before hard clamping.
It integrates active Miller clamp (CLAMP output), output short-circuit clamping, input/output UVLO with RDY indication, and glitch-filtered CMOS-compatible inputs rejecting transients <20 ns. The device operates across –40°C to +125°C ambient with 5.7-kVRMS reinforced isolation rated per VDE, UL, CSA, CQC, and TUV standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CMTI | 50-kV/μs min (100-kV/μs typ) - ensures reliable operation in high-dV/dt motor drives and inverters with fast-switching SiC/GaN devices. |
| Output Drive Strength | 2.5-A peak source (OUTH), 5-A peak sink (OUTL) - supports fast IGBT turn-on and robust turn-off under high Miller current conditions. |
| Propagation Delay | 76 ns typ, 110 ns max - enables precise timing control in high-frequency PWM systems up to 100+ kHz. |
| Isolation Rating | 5.7-kVRMS reinforced per VDE V 0884-10, 5700-VRMS per UL 1577 - meets safety requirements for industrial and EV traction inverters. |
| Supply Ranges | Input: 2.25–5.5 V; Output: 15–30 V total (VCC2–VEE2) - accommodates standard 3.3-V/5-V logic and bipolar ±15-V gate supplies. |
| DESAT Protection | 9-V threshold (8.3–9.5 V), 400-ns blanking window - detects IGBT overcurrent while rejecting switching noise during turn-on. |
| Operating Temperature | –40°C to +125°C ambient - qualified for under-hood automotive and industrial motor drive environments. |
Pinout & Package
ISO5452DW is housed in a 16-pin SOIC package (DW suffix), body size 10.30 mm × 7.50 mm, with creepage/clearance >8 mm and internal insulation distance >21 μm - suitable for reinforced isolation in high-voltage PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8: VEE2 | Output negative supply rail | Connects to GND2 in unipolar configurations; sets low-side reference for OUTL and CLAMP. |
| 2: DESAT | Desaturation sense input | Monitors IGBT VCE via external RC network; triggers fault response when voltage exceeds 9 V. |
| 3, 9: GND2 / GND1 | Output / input ground references | Galvanically isolated grounds; GND2 ties to IGBT emitter, GND1 to controller logic ground. |
| 4: OUTH | Positive gate drive output | Sources up to 2.5 A to charge IGBT/MOSFET gate; disabled during DESAT fault. |
| 5: VCC2 | Output positive supply rail | Supplies high-side driver stage; must be ≥15 V for full 5-A sink capability at OUTL. |
| 6: OUTL | Negative gate drive output | Sinks up to 5 A to discharge gate; actively pulled low during soft turn-off and short-circuit clamp. |
| 7: CLAMP | Active Miller clamp output | Provides low-impedance path to VEE2 during Miller plateau to prevent spurious turn-on. |
| 10, 11: IN+, IN− | Differential gate control inputs | CMOS-compatible; accept 2.25–5.5 V logic; reject <20 ns noise pulses. |
| 12: RDY | Power-good status indicator | High when both VCC1 and VCC2/VEE2 supplies are within UVLO thresholds - enables system enable sequencing. |
| 13: FLT | Fault alarm output | Open-drain, low-active signal indicating DESAT event; latched until reset via RST pulse. |
| 14: RST | Fault reset input | Low-active pulse ≥800 ns resets FLT latch after RDY returns high - prevents premature recovery. |
| 15: VCC1 | Input side supply | Powers isolator and input logic; UVLO trips at 2.25 V (rising) / 1.7 V (falling). |
Key Features
| Feature | Design Value |
|---|---|
| Split-output architecture | Enables independent optimization of turn-on (OUTH) and turn-off (OUTL) paths - improves switching loss balance and EMI control. |
| Soft Turn-Off (STO) | 2-μs controlled ramp-down of OUTL to 2 V, then hard clamp to VEE2 - reduces voltage overshoot and di/dt stress during fault conditions. |
| Active Miller Clamp | CLAMP output sinks ≥2.5 A at ≤2.5 V above VEE2 - suppresses dynamic turn-on in high-dV/dt half-bridges without external components. |
| Output short-circuit clamp | Clamps OUTH and OUTL to VCC2/VEE2 within 1.3 V during overload - protects gate driver from thermal runaway during shoot-through. |
| Glitch-filtered inputs | Rejects transients <20 ns on IN+, IN−, and RST - eliminates false triggering from EMI in noisy power converter environments. |
Applications
| Industrial Motor Drives | Solar Inverters |
|---|---|
|
Use Scenario: Three-phase IGBT-based VFDs for HVAC compressors and industrial pumps operating at 10–20 kHz PWM frequency with 1500-V DC bus. IC Role / Device Role / Timing Role: Isolated gate driver providing reinforced 5.7-kVRMS separation between MCU control logic and 650-V/1200-V IGBT half-bridge, with DESAT monitoring and STO for stall protection. Use Value: Enables compact, high-efficiency drives meeting IEC 61800-5-1 safety requirements without external fault-handling circuitry. |
Use Scenario: Central and string inverters converting 600–1000-V PV DC to grid-synchronized AC, using 1200-V IGBT modules in NPC or T-type topologies. IC Role / Device Role / Timing Role: High-CMTI isolated driver delivering precise timing (76-ns delay) and bipolar gate control to minimize conduction losses and improve THD. Use Value: Supports >98% efficiency targets by enabling fast, low-loss switching while maintaining functional safety per IEC 62109 and UL 1741. |
| EV Traction Inverters | Induction Heating Systems |
|
Use Scenario: 400–800-V battery-powered traction inverters driving permanent magnet motors with SiC MOSFETs at 25–50 kHz. IC Role / Device Role / Timing Role: Reinforced isolated driver with 100-kV/μs CMTI and active Miller clamp - critical for noise immunity in high-power, high-dV/dt vehicle environments. Use Value: Eliminates need for optocoupler-based solutions requiring external bias supplies and discrete protection circuits. |
Use Scenario: Resonant LLC inverters for commercial induction cooktops and industrial metal heating, operating at 20–100 kHz with 1200-V IGBTs. IC Role / Device Role / Timing Role: Gate driver with fast propagation (≤110 ns) and tight part-to-part skew (30 ns) - ensures precise phase alignment in multi-phase resonant converters. Use Value: Reduces thermal stress on IGBTs during zero-voltage switching transitions, extending module lifetime in continuous-duty applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si827x (Si8273BD-IS) | Higher 12.5-A peak sink, but single-output architecture; lower 35-kV/μs CMTI; 5-kVRMS isolation only. | Lacks split outputs and integrated DESAT; requires external fault logic and Miller clamp. | Preferred where ultra-high sink current is needed and system-level protection is already implemented. |
| ADUM4135BRWZ | 4-A peak source/sink, 35-kV/μs CMTI, 5-kVRMS isolation; no integrated DESAT or soft turn-off. | Requires external DESAT comparator and separate Miller clamp; lacks RDY/FLT signaling. | Suitable for cost-sensitive designs where functional safety certification is not required and external protection is acceptable. |
Compared with ISO5452DW, Si8273BD-IS offers higher sink current but less integration and lower noise immunity, while ADUM4135BRWZ provides simpler interface but no built-in fault handling - ISO5452DW delivers superior system-level reliability for certified industrial and automotive inverters.
Availability
ISO5452DW is available at Aetrix Electronics and suitable for industrial motor drives, solar inverters, and EV traction systems requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.
Supply support for ISO5452DW includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-reliability power management solutions, with decades of expertise in isolation technology and industrial-grade IC design.
The ISO5452DW belongs to TI's reinforced isolated gate driver product line, engineered specifically for high-noise, high-voltage power conversion systems requiring functional safety, fast switching, and integrated protection - including motor drives, renewable energy inverters, and transportation electrification.
FAQ
What is the maximum output supply voltage range supported by the ISO5452DW?
The ISO5452DW supports an output supply range of 15 V to 30 V across VCC2 and VEE2 (i.e., VCC2 – VEE2 ≤ 30 V). For bipolar operation, VCC2 can be +15 V and VEE2 –15 V; for unipolar, VEE2 connects to GND2 and VCC2 operates from 15 V to 30 V. Exceeding 30 V total violates absolute maximum ratings and risks permanent damage to the ISO5452DW.
How does the ISO5452DW implement desaturation protection, and what happens when a fault is detected?
Upon detecting VCE > 9 V at the DESAT pin, the ISO5452DW immediately blocks its isolator output, asserts FLT low, and initiates soft turn-off: OUTH is disabled and OUTL is ramped low over 2 μs to 2 V, then hard-clamped to VEE2. The fault remains latched until RDY is high and a low pulse ≥800 ns is applied to RST - ensuring safe recovery only after supply stability is confirmed.
Can the ISO5452DW drive both IGBTs and SiC MOSFETs, and what design considerations apply?
Yes, the ISO5452DW drives both IGBTs and SiC MOSFETs. Its 2.5-A source / 5-A sink capability, 76-ns propagation delay, and 100-kV/μs CMTI suit fast-switching SiC devices. For SiC, ensure DESAT blanking time (≥310 ns) avoids false triggering during miller plateau, and verify CLAMP threshold (2.1 V) aligns with SiC gate threshold to prevent unintended clamping.
What is the purpose of the RDY pin on the ISO5452DW, and how should it be used in system design?
The RDY pin is an open-drain, active-high power-good indicator that goes high only when both VCC1 (2.25–5.5 V) and VCC2/VEE2 (15–30 V total) are within UVLO thresholds. System designers must tie RDY to MCU GPIO or enable logic to prevent gate drive activation until all supplies stabilize - preventing erratic switching or latch-up during power-up sequences in the ISO5452DW.
Does the ISO5452DW require external components for Miller clamp functionality, or is it fully integrated?
The ISO5452DW includes a fully integrated active Miller clamp via the CLAMP pin, which sinks ≥2.5 A when enabled. No external transistor or diode is required - simply connect CLAMP to the IGBT/MOSFET gate. This eliminates layout complexity and improves reliability versus discrete clamp solutions, and is confirmed in TI's ISO5452DW datasheet Section 9.3 and Figure 9-3.
ISO5452DW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Technology:
- Capacitive Coupling
- Number of Channels:
- 1
- Voltage - Isolation:
- 5700Vrms
- Common Mode Transient Immunity (Min):
- 50kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 110ns, 110ns
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- 18ns, 20ns
- Current - Output High, Low:
- 1.5A, 3.4A
- Current - Peak Output:
- 2.7A, 5.5A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 15V ~ 30V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
- Approval Agency:
- CQC, CSA, UR, VDE
ISO5452DW FAQ
1.How can I place an order for ISO5452DW through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO5452DW on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISO5452DW reliable?
The price and inventory of ISO5452DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO5452DW is usually 5 days.
3.What payment methods are accepted for ISO5452DW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO5452DW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO5452DW?
ISO5452DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO5452DW order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISO5452DW?
For technical support, including ISO5452DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO5452DW requirements.
6.How does Aetrix verify that ISO5452DW is sourced from the original manufacturer or authorized distributors?
All ISO5452DW products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISO5452DW meets industry standards.
7.What is the process for return or replacement of ISO5452DW?
All ISO5452DW units undergo pre-shipment inspection (PSI). If there is an issue with ISO5452DW, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISO5452DW part is unused and in its original packaging.
Return procedure for ISO5452DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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