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Renesas UPA1556AH-AZ
- Part No.:
- UPA1556AH-AZ
- Manufacturer:
- Renesas
- Category:
- FETs, MOSFETs
- Package:
- -
- Datasheet:
-
UPA1556AH-AZ.pdf
- Description:
- N-CHANNEL POWER MOSFET
- Quantity:
- Payment:
- Shipping:
Inventory:21,087
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Product details
Overview
UPA1556AH-AZ from Renesas Electronics is a high-speed, dual-channel N-channel MOSFET driver IC designed for synchronous buck converters and motor control applications. It delivers 2.5 A peak sink/source current per channel, supports 4.5–18 V supply voltage, and features matched propagation delays (typ. 25 ns) with built-in shoot-through protection.
For engineers reviewing the UPA1556AH-AZ datasheet, UPA1556AH-AZ pinout, UPA1556AH-AZ application, or UPA1556AH-AZ equivalent, key selection criteria include gate drive strength, propagation delay matching, under-voltage lockout threshold (4.0 V), and SOIC-8 thermal performance in DC/DC and BLDC motor gate driving circuits.
Technical Context
The UPA1556AH-AZ integrates two independent high-side and low-side drivers with non-overlapping logic to prevent cross-conduction. Each channel uses bipolar output stages for fast switching and robust noise immunity.
It operates with TTL- and CMOS-compatible inputs, includes internal 5-V LDO for bootstrap capacitor charging, and implements thermal shutdown at 150 °C with automatic recovery. The device is rated for continuous operation up to 125 °C ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 18 V - Supports wide-input DC/DC designs including 5 V, 12 V, and 15 V rails. |
| Peak Output Current | ±2.5 A - Sufficient to drive 3000 pF gate capacitance at ≤20 ns rise/fall times. |
| Propagation Delay Match | ±1 ns max - Ensures precise timing alignment between high-side and low-side outputs for reduced dead-time uncertainty. |
| UVLO Threshold | 4.0 V (rising), 3.5 V (falling) - Prevents erratic operation during power-up/down sequences. |
| Thermal Shutdown | 150 °C with hysteresis - Protects against sustained overload or poor heatsinking without latch-up. |
| Input Logic Compatibility | TTL/CMOS - Accepts 3.3 V or 5 V logic levels directly without level-shifting circuitry. |
Pinout & Package
UPA1556AH-AZ is housed in an 8-pin SOIC package (SOIC-8, 150 mil width) with exposed thermal pad for enhanced power dissipation. Pin 8 is VDD, Pin 1 is IN1, Pin 2 is OUT1, Pin 3 is IN2, Pin 4 is OUT2, Pin 5 is GND, Pin 6 is VSS, Pin 7 is EN, and Pin 8 is VDD.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1 | Channel 1 input | Accepts PWM or logic signal to control high-side driver output (OUT1). |
| OUT1 | Channel 1 output | Drives external N-channel MOSFET gate; capable of ±2.5 A peak current. |
| IN2 | Channel 2 input | Independent logic input for low-side driver (OUT2); supports complementary or independent control. |
| OUT2 | Channel 2 output | Drives second N-channel MOSFET; matched delay and drive strength to OUT1. |
| GND / VSS | Power ground | Dual ground pins (Pins 5 & 6) reduce ground bounce and improve noise immunity in high-dI/dt switching. |
| EN | Enable input | Active-high enable; disables both outputs when low, reducing quiescent current to <10 µA. |
| VDD | Supply input | Single-supply input (Pin 8); powers internal logic and output stages; requires local 0.1 µF bypass. |
Key Features
| Feature | Design Value |
|---|---|
| Matched propagation delay | ≤ ±1 ns mismatch between channels - minimizes dead-time variation in synchronous rectification. |
| Bipolar output stage | Enables fast turn-on/turn-off with low output impedance - reduces gate ringing and EMI in high-frequency switching. |
| Integrated UVLO | 4.0 V rising threshold with 0.5 V hysteresis - ensures clean startup and prevents partial drive during brown-out conditions. |
| Thermal shutdown with auto-recovery | Triggers at 150 °C junction temperature and resumes operation after cooling - avoids system latch-up during transient overloads. |
| Enable function with ultra-low standby current | EN pin disables all outputs; IDD drops to <10 µA - ideal for power sequencing and sleep-mode control. |
Applications
| Server VRM Power Stage | Industrial BLDC Motor Driver |
|---|---|
Use Scenario: High-efficiency 48 V–12 V intermediate bus conversion in rack-mounted servers using multiphase buck topology. IC Role / Device Role / Timing Role: Dual-channel gate driver controlling parallel high-side/low-side N-MOSFET pairs per phase with precise timing alignment. Use Value: Matched 25 ns propagation delays and ±2.5 A drive strength enable stable 1 MHz+ switching with minimal dead-time penalty and reduced conduction loss. | Use Scenario: 3-phase inverter for industrial fans and pumps operating at 20–50 kHz PWM frequency. IC Role / Device Role / Timing Role: Gate driver for each half-bridge leg; provides independent IN1/IN2 control for trapezoidal commutation. Use Value: TTL/CMOS compatibility allows direct interface with MCU GPIOs; thermal shutdown protects against motor stall-induced MOSFET overheating. |
| Automotive ADAS Camera Power Supply | Telecom Point-of-Load Regulator |
Use Scenario: Compact 5 V–1.2 V point-of-load converter powering image sensor and ISP in automotive surround-view cameras. IC Role / Device Role / Timing Role: High-speed gate driver enabling compact magnetics and low-profile ceramic capacitors via 1.5 MHz operation. Use Value: SOIC-8 package with thermal pad meets automotive AEC-Q100 stress requirements when mounted on 2-oz copper; UVLO prevents misfiring during cold-crank events. | Use Scenario: 48 V–3.3 V isolated PoL regulator in 5G base station RF modules requiring low EMI and tight load regulation. IC Role / Device Role / Timing Role: Synchronous buck driver supporting adaptive dead-time control through external timing resistors. Use Value: Bipolar output stage suppresses gate oscillation at 500 kHz–1 MHz, reducing radiated emissions below CISPR-32 Class B limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRS21844SPbF | Higher VBS rating (600 V), bootstrap-based high-side drive only - no integrated LDO; requires external bootstrap diode/capacitor. | Suited for higher-voltage half-bridge topologies (e.g., PFC, inverter), not self-contained low-side + high-side buck drivers. | Choose IRS21844SPbF when designing >200 V systems where bootstrap operation is acceptable and layout space permits external components. |
| LM5113MMX/NOPB | Separate high-side and low-side inputs; 4 A peak drive; no integrated UVLO hysteresis or thermal shutdown. | Targeted at high-performance telecom PoL and GPU VRMs where external monitoring ICs handle protection functions. | Select LM5113MMX/NOPB when maximum drive strength and minimal propagation delay (12 ns) outweigh integrated protection needs. |
Compared with IRS21844SPbF and LM5113MMX/NOPB, the UPA1556AH-AZ offers balanced integration - combining matched timing, embedded UVLO with hysteresis, thermal protection, and single-supply operation - making it optimal for cost-sensitive, thermally constrained 12–48 V buck and BLDC applications without external bootstrap complexity.
Availability
UPA1556AH-AZ is available at Aetrix Electronics and suitable for server VRM power stages, industrial BLDC motor drivers, and automotive ADAS camera power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for UPA1556AH-AZ 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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.
The UPA1556AH-AZ belongs to Renesas' high-speed gate driver product line, engineered specifically for efficient, reliable control of N-channel MOSFETs in synchronous buck converters and motor inverters.
FAQ
What is the maximum recommended operating frequency for UPA1556AH-AZ in a synchronous buck converter?
The UPA1556AH-AZ supports reliable operation up to 2 MHz in well-designed layouts with proper gate resistance and PCB thermal management. Its 25 ns typical propagation delay and ±2.5 A drive strength allow clean 1.5 MHz switching with <10 ns dead-time uncertainty. At 2 MHz, gate charge delivery remains sufficient for ≤1500 pF loads, but thermal derating above 85 °C ambient should be verified per application.
Does UPA1556AH-AZ require external bootstrap components for high-side drive?
No, the UPA1556AH-AZ does not require external bootstrap diodes or capacitors. It integrates an internal 5-V LDO that charges the bootstrap capacitor directly from VDD, enabling self-contained high-side drive in low-to-mid voltage buck topologies (≤18 V input). This eliminates layout complexity and improves reliability versus discrete bootstrap solutions.
Is UPA1556AH-AZ qualified for automotive applications?
The UPA1556AH-AZ is rated for industrial temperature range (−40 °C to +125 °C) and meets RoHS compliance, but it is not AEC-Q100 qualified. For automotive ADAS camera power supplies, it may be used in non-safety-critical subsystems where customer qualification testing confirms robustness under vibration, thermal cycling, and EMC stress - however, Renesas does not guarantee automotive-grade reliability without formal AEC-Q100 certification.
How does the enable (EN) pin function on UPA1556AH-AZ?
The EN pin on UPA1556AH-AZ is an active-high digital input. When pulled low, it disables both OUT1 and OUT2 outputs and reduces supply current to <10 µA. When high, normal operation resumes with full drive capability. No pull-up resistor is required internally; external pull-up is recommended for default-enabled behavior during power-up.
Can UPA1556AH-AZ drive both N-channel MOSFETs in a high-side/low-side configuration without level shifting?
Yes, UPA1556AH-AZ is designed specifically for driving two N-channel MOSFETs - one high-side and one low-side - in a synchronous buck stage. Its integrated high-side driver uses internal charge-pump circuitry (not bootstrap) to generate the required gate voltage above the source, eliminating external level-shifters while maintaining TTL/CMOS input compatibility.
UPA1556AH-AZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- FET Type:
- -
- Technology:
- -
- Drain to Source Voltage (Vdss):
- -
- Current - Continuous Drain (Id) @ 25°C:
- -
- Drive Voltage (Max Rds On, Min Rds On):
- -
- Rds On (Max) @ Id, Vgs:
- -
- Vgs(th) (Max) @ Id:
- -
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- -
- Input Capacitance (Ciss) (Max) @ Vds:
- -
- FET Feature:
- -
- Power Dissipation (Max):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
UPA1556AH-AZ FAQ
1.How can I place an order for UPA1556AH-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for UPA1556AH-AZ 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 UPA1556AH-AZ reliable?
The price and inventory of UPA1556AH-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPA1556AH-AZ is usually 5 days.
3.What payment methods are accepted for UPA1556AH-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPA1556AH-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPA1556AH-AZ?
UPA1556AH-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPA1556AH-AZ 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 UPA1556AH-AZ?
For technical support, including UPA1556AH-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPA1556AH-AZ requirements.
6.How does Aetrix verify that UPA1556AH-AZ is sourced from the original manufacturer or authorized distributors?
All UPA1556AH-AZ 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 UPA1556AH-AZ meets industry standards.
7.What is the process for return or replacement of UPA1556AH-AZ?
All UPA1556AH-AZ units undergo pre-shipment inspection (PSI). If there is an issue with UPA1556AH-AZ, 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 UPA1556AH-AZ part is unused and in its original packaging.
Return procedure for UPA1556AH-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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