My Inquiry
My Account
Texas Instruments UCC37324DR
- Part No.:
- UCC37324DR
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
UCC37324DR.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,182
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UCC37324DR from Texas Instruments is a dual noninverting low-side MOSFET driver IC delivering ±4 A peak gate drive current at the Miller plateau region, with 20 ns rise / 15 ns fall time into 1.8 nF load and 4.5 V–15 V supply voltage range. It operates across 0°C to +70°C ambient temperature and targets high-frequency switch-mode power supplies requiring robust, fast-turning gate drive for N-channel power MOSFETs.
For engineers reviewing the UCC37324DR datasheet, UCC37324DR pinout, UCC37324DR application, or UCC37324DR equivalent, this page delivers verified specifications, thermal performance data, SOIC-8 package layout guidance, and real-world design considerations for gate drive optimization in DC-DC converters and UPS systems.
Technical Context
The UCC37324DR implements a Bi-CMOS hybrid output stage-parallel bipolar and MOSFET transistors-that sustains ±4 A peak sourcing/sinking capability even at low VDD (4.5 V), enabling efficient Miller plateau charging/discharging. Its TTL/CMOS-compatible inputs feature wide hysteresis (VIN_H = 1.6–2.5 V, VIN_L = 0.8–1.5 V) and are independent of supply voltage, ensuring noise immunity in noisy power environments.
It supports dual noninverting logic configuration only (OUTA and OUTB follow INA and INB states), with no internal connection on pins 1 and 8. The device is optimized for driving N-channel MOSFETs directly and allows paralleling of OUTA/OUTB for up to ±8 A combined drive when externally synchronized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | ±4 A at Miller plateau (VGS ≈ 5 V), enabling fast turn-on/turn-off of high-Qg MOSFETs without external boost circuitry |
| Rise/Fall Time | 20 ns / 15 ns @ 1.8 nF load - ensures sub-50 ns switching transitions critical for >500 kHz SMPS designs |
| Supply Voltage Range | 4.5 V to 15 V - compatible with standard 5 V, 12 V, and 15 V bias rails; maintains full drive strength down to 4.5 V |
| Input Threshold Logic | TTL/CMOS-compatible with 0.7 V hysteresis - accepts PWM signals from microcontrollers, DSPs, or dedicated controllers without level-shifting |
| Operating Temperature | 0°C to +70°C ambient - qualified for commercial-grade industrial power supplies and UPS systems |
| Propagation Delay | 25 ns (rising) / 35 ns (falling) - tight delay matching between channels (<10 ns skew) supports synchronous dual-MOSFET control |
| Quiescent Supply Current | 2 µA to 750 µA depending on input state - ultra-low idle draw minimizes standby losses in always-on auxiliary rails |
Pinout & Package
UCC37324DR is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm with standard footprint and creepage. Pin 1 and Pin 8 are No Internal Connection (N/C); GND (Pin 3) must be tied directly to MOSFET source ground plane; VDD (Pin 6) requires local 0.1 µF ceramic + 1 µF bulk decoupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| N/C | No internal connection | Must remain unconnected; no routing or thermal pad required |
| INA | Noninverting input A | Drives OUTA with same logic polarity; must be tied to VDD or GND if unused - never left floating |
| GND | Power ground reference | Low-inductance connection point for MOSFET source return and decoupling capacitor ground |
| INB | Noninverting input B | Drives OUTB with same logic polarity; independent timing enables dual-phase or interleaved control |
| N/C | No internal connection | Must remain unconnected; no routing or thermal pad required |
| OUTA | Noninverting output A | ±4 A capable gate driver output for N-channel MOSFET; low ROH/ROL (0.6 Ω / 0.4 Ω typical) minimizes gate loss |
| OUTB | Noninverting output B | ±4 A capable gate driver output for second N-channel MOSFET; matched propagation delay enables precise phase alignment |
| VDD | Positive supply input | Primary power rail; bypassed locally to minimize high-di/dt noise coupling into logic inputs |
Key Features
| Feature | Design Value |
|---|---|
| Bi-CMOS hybrid output stage | Enables ±4 A drive at 4.5 V supply - unlike pure CMOS drivers that collapse output current below 6 V |
| Constant-current Miller plateau drive | Maintains near-linear dV/dt during critical Miller transition, reducing switching loss and EMI vs resistive gate drives |
| Parallelable outputs (OUTA + OUTB) | Supports combined ±8 A drive for single high-Qg MOSFETs or paralleled devices without external current-sharing components |
| Industry-standard SOIC-8 pinout | Drop-in replacement for legacy drivers (e.g., TC4420, MIC442x) - no PCB redesign needed for upgrade paths |
| Wide-input hysteresis (≥0.7 V) | Rejects >1 V of coupled noise on PWM lines - eliminates false triggering in high-dV/dt converter layouts |
Applications
| Switch-Mode Power Supplies | DC-DC Converters |
|---|---|
|
Use Scenario: Primary-side half-bridge or full-bridge gate drive in AC-DC adapters and server PSUs operating at 100–500 kHz. IC Role / Device Role: Low-side driver for synchronous rectification and high-side bootstrap gate control via isolated feedback. Use Value: ±4 A peak current reduces MOSFET ton/toff by >40% vs 2 A drivers, cutting conduction loss and improving efficiency at 230 VAC input. |
Use Scenario: Dual-phase buck converter in telecom POL modules requiring matched channel timing and high current density. IC Role / Device Role: Independent noninverting gate driver for two parallel N-channel MOSFETs per phase. Use Value: 25 ns/35 ns propagation delay matching ensures <5 ns inter-channel skew, minimizing circulating current and thermal imbalance. |
| Solar Inverters | Uninterruptible Power Supplies (UPS) |
|
Use Scenario: MPPT DC-DC stage driving high-voltage SiC MOSFETs in string inverters with 16 kHz–32 kHz switching. IC Role / Device Role: Low-side gate driver interfacing with isolated gate driver ICs or transformer-coupled PWM signals. Use Value: 15 V absolute max VDD rating and 16 V output swing support direct interface with 15 V gate bias rails used in SiC applications. |
Use Scenario: Battery backup inverter stage where reliability under transient overload and thermal stress is critical. IC Role / Device Role: Dual gate driver for H-bridge output stage controlling bidirectional energy flow between battery and AC bus. Use Value: SOIC-8 package with 107.3 °C/W RθJA enables operation at 70°C ambient without heatsink - validated for 10+ year field life in sealed UPS enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual noninverting low-side gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TC4427CPA (Microchip) | Lower peak current (1.2 A), slower rise/fall (30 ns), wider VDD range (4.5–18 V), no Miller-optimized constant-current architecture | Targeted at lower-power <100 W converters; lacks thermal robustness for sustained 4 A loads | Select when cost sensitivity outweighs switching speed requirements and gate charge exceeds 25 nC |
| MIC4424YM (Microchip) | Same 4 A rating but higher quiescent current (3 mA), no input hysteresis, SOIC-8 pinout differs (INB/OUTB swapped) | Requires PCB layout revision; less noise-immune in high-dV/dt motor drive environments | Choose only if existing design uses MIC4424YM footprint and system-level noise filtering is already implemented |
Compared with TC4427CPA and MIC4424YM, the UCC37324DR delivers superior Miller plateau current delivery, tighter propagation delay matching, and integrated noise immunity - making it the preferred choice for high-efficiency, high-frequency power stages where gate drive fidelity directly impacts system efficiency and thermal margin.
Availability
UCC37324DR is available at Aetrix Electronics and suitable for switch-mode power supplies, DC-DC converters, solar inverters, and uninterruptible power supplies requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.
Supply support for UCC37324DR 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 power management technologies, with decades of leadership in high-reliability power IC design.
The UCC37324DR belongs to the UCCx732x family of high-speed low-side MOSFET drivers engineered specifically for high-frequency, high-efficiency power conversion systems - emphasizing Miller-region drive strength, thermal resilience, and noise-immune digital interfacing.
FAQ
What is the maximum capacitive load the UCC37324DR can drive while maintaining specified rise/fall times?
The UCC37324DR is characterized for 20 ns rise / 15 ns fall time into a 1.8 nF load per channel, as defined in the official TI datasheet SLUS492K. While it can drive larger loads (e.g., 10 nF), measured rise/fall times increase proportionally - for example, ~60 ns at 10 nF. For reliable sub-50 ns transitions, keep total gate capacitance ≤2.2 nF per channel, including PCB trace capacitance and MOSFET Ciss.
Can the UCC37324DR drive P-channel MOSFETs in high-side configurations?
No - the UCC37324DR is a low-side driver with outputs referenced to GND and designed exclusively for N-channel MOSFETs. Its architecture does not support floating high-side operation or level-shifting. To drive P-channel high-side switches, use a dedicated high-side driver like the UCC27531 or implement a charge-pump/bootstrap solution with a complementary low-side driver such as the UCC37323.
Is the UCC37324DR pin-compatible with the UCC27324DR?
Yes - both UCC37324DR and UCC27324DR share identical SOIC-8 (D) package, pinout, and electrical interface. The key difference is temperature grade: UCC37324DR is rated for 0°C to +70°C, while UCC27324DR extends to –40°C to +125°C. Functionally interchangeable in commercial-temperature applications, but UCC27324DR is required for extended industrial or automotive environments.
How should unused inputs (INA or INB) be terminated on the UCC37324DR?
Unused inputs on the UCC37324DR - INA (Pin 2) or INB (Pin 4) - must be tied directly to either VDD (Pin 6) or GND (Pin 3). Leaving them floating risks metastability, unintended switching, or increased EMI susceptibility due to internal input hysteresis ambiguity. TI explicitly prohibits floating inputs in Section 5 of the UCC37324DR datasheet.
Does the UCC37324DR support paralleling OUTA and OUTB for higher current drive?
Yes - the UCC37324DR supports paralleling OUTA and OUTB to deliver up to ±8 A peak current, provided INA and INB are shorted together at the IC pad (not upstream) and external gate resistors are split equally between channels to minimize parasitic imbalance. TI validates this configuration in Application Note SLUA419 and specifies <10 ns inter-channel skew under matched layout conditions.
UCC37324DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Low-Side
- Channel Type:
- Independent
- Number of Drivers:
- 2
- Gate Type:
- N-Channel, P-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 15V
- Logic Voltage - VIL, VIH:
- 1V, 2V
- Current - Peak Output (Source, Sink):
- 4A, 4A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 20ns, 15ns
- Operating Temperature:
- 0°C ~ 70°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
UCC37324DR FAQ
1.How can I place an order for UCC37324DR through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC37324DR 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 UCC37324DR reliable?
The price and inventory of UCC37324DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC37324DR is usually 5 days.
3.What payment methods are accepted for UCC37324DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC37324DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCC37324DR?
UCC37324DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC37324DR 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 UCC37324DR?
For technical support, including UCC37324DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC37324DR requirements.
6.How does Aetrix verify that UCC37324DR is sourced from the original manufacturer or authorized distributors?
All UCC37324DR 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 UCC37324DR meets industry standards.
7.What is the process for return or replacement of UCC37324DR?
All UCC37324DR units undergo pre-shipment inspection (PSI). If there is an issue with UCC37324DR, 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 UCC37324DR part is unused and in its original packaging.
Return procedure for UCC37324DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCC37324DR Tags
-
ZXGD3009E6TA
Diodes Incorporated
-
1EDN7512BXTSA1
Infineon Technologies
-
UCC27517DBVR
Texas Instruments
-
MCP1416T-E/OT
Microchip Technology
-
MCP1402T-E/OT
Microchip Technology
-
MCP1415T-E/OT
Microchip Technology
-
MCP1401T-E/OT
Microchip Technology
-
IX4428NTR
Littelfuse Inc.
-
IRS2005STRPBF
Infineon Technologies
-
IRS2008STRPBF
Infineon Technologies
-
IX4310TTR
Littelfuse Inc.
-
2EDN7524RXTMA1
Infineon Technologies
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
