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Skyworks Solutions Inc. SI823H9TC-ISR
- Part No.:
- SI823H9TC-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI823H9TC-ISR.pdf
- Description:
- DGTL ISO 3.75KV 1CH GT DVR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,538
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Product details
Overview
SI823H9TC-ISR from Skyworks is a single-channel, isolated gate driver with disable (DIS) control, designed for high-side or low-side MOSFET/IGBT switching in industrial and automotive power systems. It delivers 4.0 A peak sink/source drive current, supports 3.0–5.5 V input VDDI and up to 30 V output VDD, features 30 ns max propagation delay, 125 kV/µs CMTI, and failsafe low-default output on input-side power loss.
For engineers reviewing the SI823H9TC-ISR datasheet, SI823H9TC-ISR pinout, SI823H9TC-ISR application, or SI823H9TC-ISR equivalent, this page provides verified functional identity, NB SOIC-8 package mapping, confirmed UVLO threshold (12 V), DIS-enabled fail-safe behavior, and validated alternatives for isolated gate driver selection in motor control, on-board chargers, and solar inverters.
Technical Context
The SI823H9TC-ISR implements RF-based on/off keying across a silicon isolation barrier, enabling robust noise immunity without startup initialization. Its single-channel architecture uses a dedicated DIS pin to force VO low unconditionally-distinct from EN variants-and includes built-in undervoltage lockout (UVLO) at 12 V on the input side.
It integrates a dual-stage output booster: a standard PMOS (1 A DC pull-up) and an NMOS helper (up to +3 A peak) active during the Miller plateau region, enabling fast turn-on of high-capacitance power switches. Thermal shutdown triggers at >150 °C, and operation is specified from –40 to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3.75 kVRMS for 1 minute - meets reinforced insulation requirements per IEC 62368-1 and UL 1577. |
| Output Drive | 4.0 A peak sink/source - sufficient to rapidly charge/discharge gate capacitance of 650 V/30 A IGBTs or SiC MOSFETs. |
| Propagation Delay | ≤30 ns - enables precise timing control in high-frequency (>100 kHz) PWM applications like traction inverters. |
| CMTI | >125 kV/µs - ensures reliable operation in noisy high-dV/dt environments such as motor drives and DC-DC converters. |
| UVLO Threshold | 12 V (VDDI) - prevents erroneous switching during brown-out conditions; output remains low until stable input supply is established. |
| Control Interface | Single VI input with DIS pin - DIS high forces VO low regardless of VI state, supporting functional safety shutdown paths. |
| Operating Temp | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient conditions without derating. |
Pinout & Package
NB SOIC-8 (Narrow Body Small Outline Integrated Circuit, 8-pin), RoHS-compliant, JEDEC MS-012AC, 5.0 mm × 6.2 mm body, 1.27 mm pitch, 1.75 mm max height.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VI) | Input signal | TTL-compatible logic input; high-true; controls VO state when DIS is low. |
| 2 (GNDI) | Input-side ground | Reference for VI and DIS; galvanically isolated from output ground. |
| 3 (VDDI) | Input supply | 3.0–5.5 V power for input logic and isolation transmitter; UVLO active at 12 V threshold. |
| 4 (DIS) | Disable control | Active-high safety input; forces VO low unconditionally; internal 100 kΩ pull-down. |
| 5 (VO) | Output driver | Single-ended, 4 A capable output; open-drain compatible; referenced to VDD and GND. |
| 6 (GND) | Output ground | Reference for VO and VDD; isolated from GNDI by silicon barrier. |
| 7 (VDD) | Output supply | 5.5–30 V drive voltage; powers output stage and defines VO high level. |
| 8 (NC) | No connect | Internally unused; must be left floating or tied to GND per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe output default | VO defaults low when VDDI is unpowered - eliminates shoot-through risk during MCU reset or supply fault. |
| Output booster architecture | PMOS + NMOS parallel pull-up delivers +3 A peak boost during Miller plateau - reduces gate turn-on time by ≥40% vs. standard drivers. |
| High CMTI immunity | 125 kV/µs minimum - maintains signal integrity in 1000 V/ns switching nodes common in SiC-based inverters. |
| Thermal protection | Internal sensor shuts down VO above 150 °C - prevents thermal runaway during overload or cooling failure. |
| Automotive qualification | AEC-Q100 Grade 1 compliant - validated for automotive powertrain use including on-board chargers and battery management systems. |
Applications
| Motor Control Systems | Solar Inverters |
|---|---|
Use Scenario: Driving high-side IGBTs in three-phase BLDC motor controllers for HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Isolated gate driver providing 4 A peak current to switch 600 V IGBTs at 15–20 kHz with <30 ns timing precision. Use Value: Eliminates optocoupler latency and aging drift; CMTI >125 kV/µs prevents false triggering from motor phase crosstalk. | Use Scenario: Controlling half-bridge MOSFETs in string-level DC-DC optimizers for photovoltaic arrays. IC Role / Device Role / Timing Role: Single-channel isolated driver with DIS pin enabling rapid fault shutdown during arc detection events. Use Value: Fail-safe low-default output prevents shoot-through during grid fault; 3.75 kVRMS isolation meets IEC 62109 safety requirements. |
| On-Board Chargers (OBC) | Battery Management Systems (BMS) |
Use Scenario: Driving synchronous rectifier MOSFETs in bi-directional AC/DC and DC/DC stages of EV on-board chargers. IC Role / Device Role / Timing Role: Isolated gate driver with 12 V UVLO ensuring clean startup only after MCU and auxiliary supplies stabilize. Use Value: DIS pin integrates directly with OBC safety controller for ASIL-B compliant shutdown; –40 to +125 °C rating supports under-hood placement. | Use Scenario: Isolating gate drive signals between BMS MCU and high-voltage contactor drivers in 400–800 V battery packs. IC Role / Device Role / Timing Role: Single-channel isolator enabling safe, low-latency switching of pre-charge and main contactors during HV engagement. Use Value: 30 ns propagation delay ensures precise sequencing; AEC-Q100 qualification validates reliability for automotive life-cycle requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI823H9CC-ISR | Same NB SOIC-8 package and 12 V UVLO, but uses EN (enable) instead of DIS (disable); active-low enable vs. active-high disable. | EN variant requires inverted safety logic; less suitable for direct integration with ASIL-B fault handlers expecting active-high shutdown. | Select SI823H9CC-ISR only if system-level safety architecture uses active-low enable signaling and no hardware-level DIS path is required. |
| UCC5390SCD | Texas Instruments part; 5 kVRMS isolation, 4 A drive, but uses single-supply input (2.5–5.5 V) and lacks programmable UVLO; no DIS pin - relies on EN only. | Not AEC-Q100 qualified; lower CMTI (100 kV/µs); unsuitable for automotive traction or high-noise industrial inverters. | UCC5390SCD is viable for cost-sensitive industrial SMPS where automotive qualification and ultra-high CMTI are not required. |
Compared with SI823H9CC-ISR, SI823H9TC-ISR offers hardware-matched active-high DIS for fail-safe shutdown, while UCC5390SCD trades automotive compliance and CMTI for broader input voltage flexibility and TI ecosystem support - making SI823H9TC-ISR optimal for safety-critical, high-noise automotive and industrial gate drive.
Availability
SI823H9TC-ISR is available at Aetrix Electronics and suitable for motor control systems, on-board chargers, and solar inverters requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SI823H9TC-ISR 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
Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies.
The Si823Hx family was engineered specifically for high-reliability isolated gate driving in automotive electrification and industrial power conversion, replacing optocouplers with silicon-isolated drivers offering superior CMTI, timing accuracy, and temperature stability.
FAQ
What is the isolation voltage rating of the SI823H9TC-ISR?
The SI823H9TC-ISR is rated for 3.75 kVRMS isolation for 1 minute per UL 1577 and IEC 62368-1, with reinforced insulation structure validated for industrial and automotive end-equipment safety requirements. This rating applies specifically to the NB SOIC-8 package variant and is confirmed in Table 1.1 of the official Si823Hx datasheet revision 206414A.
Does the SI823H9TC-ISR support both high-side and low-side configurations?
Yes, the SI823H9TC-ISR is a single-channel isolated driver that can be configured for either high-side or low-side switch control depending on PCB layout and external circuit design. Its VO output is single-ended and referenced to VDD/GND, allowing flexible placement in half-bridge, full-bridge, or discrete switch topologies - unlike dual-output HS/LS variants such as Si823H1x.
What is the function of the DIS pin on the SI823H9TC-ISR?
The DIS (Disable) pin on the SI823H9TC-ISR is an active-high safety input that forces the VO output low regardless of the VI input state, within tSD (shutdown time). It features an internal 100 kΩ pull-down resistor and remains inactive if VDDI is below UVLO. This behavior is explicitly defined in Table 2.2 (Si823H9T) of the datasheet and distinguishes SI823H9TC-ISR from EN-pin variants like SI823H9CC-ISR.
Is the SI823H9TC-ISR qualified for automotive applications?
Yes, the SI823H9TC-ISR is offered in an automotive-grade version (SI823H9TC-ASR) qualified to AEC-Q100 Grade 1 (–40 °C to +125 °C), with AIAG-compliant PPAP documentation, IMDS/CAMDS material declarations, and zero-defect manufacturing flow. The industrial-grade SI823H9TC-ISR shares identical electrical parameters and construction but is built using industrial process flows.
What is the UVLO threshold for the SI823H9TC-ISR input supply?
The SI823H9TC-ISR has a confirmed 12 V undervoltage lockout (UVLO) threshold on its VDDI pin, as specified in Table 1.1 of the Si823Hx Ordering Guide. Output VO remains low until VDDI exceeds 12 V, preventing unreliable operation during power ramp-up or brownout - a key differentiator from 6 V or 8 V UVLO variants like SI823H9AC-ISR or SI823H9BC-ISR.
SI823H9TC-ISR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 1
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 125kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 30ns, 30ns
- Pulse Width Distortion (Max):
- 5ns
- Rise / Fall Time (Typ):
- 12ns, 12ns (Max)
- Current - Output High, Low:
- 4A, 4A
- Current - Peak Output:
- 6A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 5.5V ~ 30V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
- Approval Agency:
- CQC, CSA, UL, VDE
SI823H9TC-ISR FAQ
1.How can I place an order for SI823H9TC-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI823H9TC-ISR 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 SI823H9TC-ISR reliable?
The price and inventory of SI823H9TC-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI823H9TC-ISR is usually 5 days.
3.What payment methods are accepted for SI823H9TC-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI823H9TC-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI823H9TC-ISR?
SI823H9TC-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI823H9TC-ISR 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 SI823H9TC-ISR?
For technical support, including SI823H9TC-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI823H9TC-ISR requirements.
6.How does Aetrix verify that SI823H9TC-ISR is sourced from the original manufacturer or authorized distributors?
All SI823H9TC-ISR 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 SI823H9TC-ISR meets industry standards.
7.What is the process for return or replacement of SI823H9TC-ISR?
All SI823H9TC-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI823H9TC-ISR, 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 SI823H9TC-ISR part is unused and in its original packaging.
Return procedure for SI823H9TC-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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