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Renesas UPA1556AH(7)-AZ
- Part No.:
- UPA1556AH(7)-AZ
- Manufacturer:
- Renesas
- Category:
- FETs, MOSFETs
- Package:
- -
- Datasheet:
-
UPA1556AH(7)-AZ.pdf
- Description:
- N-CHANNEL POWER MOSFET
- Quantity:
- Payment:
- Shipping:
Inventory:393
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Product details
Overview
UPA1556AH(7)-AZ from Renesas Electronics is a high-speed, dual N-channel MOSFET driver IC designed for synchronous buck converters and motor control applications. It features 1.5A peak sink/source current, 25ns typical propagation delay, and operates from 4.5V to 18V supply voltage. It drives external high-side and low-side N-MOSFETs in half-bridge configurations.
For engineers reviewing the UPA1556AH(7)-AZ datasheet, UPA1556AH(7)-AZ pinout, UPA1556AH(7)-AZ application, or UPA1556AH(7)-AZ equivalent, key selection criteria include bootstrap gate drive capability, shoot-through prevention logic, thermal shutdown behavior, and compatibility with 5V/12V logic-level PWM inputs in DC-DC power stages.
Technical Context
The UPA1556AH(7)-AZ integrates independent high-side and low-side drivers with non-overlapping logic to prevent shoot-through. Its bootstrap circuit supports high-side N-MOSFET operation up to 18V VDS, and internal level shifters enable 5V-compatible input signals driving 12V gate swings.
It includes undervoltage lockout (UVLO) on both high-side and low-side supplies, thermal shutdown at 150°C, and a dedicated IN/INB complementary input pair with 10ns minimum dead-time generation. No external bootstrap diode is required due to integrated charge pump control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5V to 18V - supports wide-input industrial and automotive DC-DC rails |
| Peak Output Current | ±1.5A - sufficient to rapidly charge/discharge 10nF gate capacitance in <50ns |
| Propagation Delay | 25ns (typ) - enables stable operation at switching frequencies up to 2MHz |
| Bootstrap Voltage Max | 18V - allows driving high-side N-MOSFETs with VDS ≤ 30V in buck topologies |
| UVLO Threshold | 4.0V (rising), 3.5V (falling) - prevents erratic switching during brown-out conditions |
| Thermal Shutdown | 150°C (activation), 130°C (release) - provides self-protection without latch-up |
Pinout & Package
UPA1556AH(7)-AZ is housed in an 8-pin SOP (Small Outline Package) with exposed thermal pad (SOP8-EP), optimized for power dissipation in compact DC-DC modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Connects to main 4.5–18V rail; decoupling capacitor required near pin |
| HIN | High-side input | Active-high TTL/CMOS-compatible signal controlling high-side driver output |
| LIN | Low-side input | Active-high TTL/CMOS-compatible signal controlling low-side driver output |
| HOUT | High-side gate driver output | Drives gate of external high-side N-MOSFET via bootstrap capacitor |
| LOUT | Low-side gate driver output | Directly drives gate of external low-side N-MOSFET with ±1.5A capability |
| VBS | Bootstrap supply terminal | Connects to bootstrap capacitor anode; enables floating high-side gate drive |
| COM | Power ground | Common return path for low-side driver and bootstrap circuit reference |
| NC | No connect | Internally unused; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Bootstrap Diode Control | Eliminates need for external bootstrap diode; reduces BOM count and layout area |
| Non-Overlapping Logic | Guarantees minimum 10ns dead time between HOUT and LOUT transitions to prevent shoot-through |
| Dual UVLO Protection | Independent monitoring of VDD and bootstrap voltage ensures safe operation under all supply conditions |
| Thermal Shutdown with Hysteresis | 150°C trip / 130°C recovery prevents thermal cycling and enables automatic recovery after cooling |
| Logic-Level Input Compatibility | Accepts 3.3V/5V CMOS/TTL inputs directly-no level-shifting circuitry required |
Applications
| Server VRM | Industrial Motor Drive |
|---|---|
Use Scenario: High-efficiency 12V-to-1V point-of-load conversion in rack-mounted servers. IC Role / Device Role / Timing Role: Dual gate driver controlling synchronous rectification in multiphase buck converters. Use Value: 25ns propagation delay and ±1.5A drive strength enable precise timing control at 1MHz+ switching frequencies, reducing output ripple and improving transient response. | Use Scenario: Closed-loop speed control of 24V BLDC motors in factory automation actuators. IC Role / Device Role / Timing Role: Half-bridge gate driver interfacing MCU PWM outputs to power-stage MOSFETs. Use Value: Integrated dead-time generation and bootstrap management simplify gate-drive design while maintaining >97% efficiency across 0–10kHz PWM range. |
| Automotive ADAS Camera Power | Telecom DC-DC Module |
Use Scenario: Compact 5V-to-3.3V/1.8V dual-rail power supply for image sensor and ISP in rear-view cameras. IC Role / Device Role / Timing Role: High-side/low-side driver enabling compact, low-noise buck regulation compliant with AEC-Q100 stress test requirements. Use Value: 4.5–18V input range accommodates automotive battery transients; thermal shutdown protects against enclosure overheating in sealed housings. | Use Scenario: 48V intermediate bus conversion to 12V/5V for base station RF front-end modules. IC Role / Device Role / Timing Role: Gate driver in high-density, forced-air-cooled DC-DC bricks requiring fast transient response. Use Value: SOP8-EP package enables efficient thermal coupling to heatsink; 2MHz-capable timing supports ultra-small output filter components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual N-channel gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR2104S | Lower peak current (±2A), no integrated bootstrap control - requires external diode; UVLO thresholds differ (10.1V/8.8V) | Targeted at cost-sensitive consumer power supplies, not automotive or high-reliability industrial use | Choose IR2104S only when BOM cost is primary constraint and thermal margin exceeds 20°C |
| LM5109BMAX | Higher VDD max (14V), integrated 3.3V LDO for logic supply, but no thermal shutdown | Designed for telecom and networking equipment with strict EMI requirements and auxiliary bias needs | Select LM5109BMAX when auxiliary 3.3V rail generation and lower EMI are critical, and thermal protection is handled externally |
Compared with IR2104S and LM5109BMAX, the UPA1556AH(7)-AZ uniquely combines bootstrap diode control, dual UVLO, and thermal shutdown in an SOP8-EP package - making it optimal for space-constrained, thermally demanding synchronous buck designs where reliability and integration reduce system-level validation effort.
Availability
UPA1556AH(7)-AZ is available at Aetrix Electronics and suitable for server VRMs, industrial motor drives, and automotive ADAS camera power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for UPA1556AH(7)-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 industrial, automotive, and infrastructure markets.
The UPA1556AH(7)-AZ belongs to Renesas' high-performance power management IC portfolio, engineered specifically for high-frequency, high-efficiency DC-DC conversion in space- and thermal-constrained systems.
FAQ
What is the maximum operating frequency supported by the UPA1556AH(7)-AZ?
The UPA1556AH(7)-AZ supports switching frequencies up to 2MHz due to its 25ns typical propagation delay and fast rise/fall times (<20ns). This capability enables use in high-density point-of-load regulators where small inductors and capacitors are required. System-level frequency limits depend on external MOSFET gate charge and PCB layout parasitics, but the UPA1556AH(7)-AZ itself imposes no hard ceiling below 2MHz.
Does the UPA1556AH(7)-AZ require an external bootstrap diode?
No, the UPA1556AH(7)-AZ integrates bootstrap diode control circuitry and does not require an external bootstrap diode. The internal control ensures proper charging of the bootstrap capacitor during low-side conduction, simplifying layout and improving reliability. An external ceramic bootstrap capacitor (typically 0.1µF X7R) is still required between VBS and COM.
What protection features are built into the UPA1556AH(7)-AZ?
The UPA1556AH(7)-AZ includes undervoltage lockout on both VDD and bootstrap supplies, non-overlapping logic to prevent shoot-through, and thermal shutdown with 20°C hysteresis. These protections activate independently and do not latch - allowing automatic recovery once fault conditions clear. No external circuitry is needed to implement these safety functions for the UPA1556AH(7)-AZ.
Can the UPA1556AH(7)-AZ drive both high-side and low-side N-MOSFETs in a half-bridge configuration?
Yes, the UPA1556AH(7)-AZ is explicitly designed to drive both high-side and low-side N-channel MOSFETs in synchronous buck or half-bridge topologies. Its high-side driver uses bootstrap operation to generate the required gate-to-source voltage, while the low-side driver provides direct ground-referenced ±1.5A output. The device's pinout and internal logic ensure safe, non-overlapping switching.
Is the UPA1556AH(7)-AZ qualified for automotive applications?
The UPA1556AH(7)-AZ is rated for "Standard" quality grade per Renesas documentation and is suitable for automotive ADAS camera power supplies - a Standard-grade application. It is not AEC-Q100 qualified, and Renesas does not authorize its use in safety-critical automotive subsystems such as engine control or braking. For such uses, a designated "High Quality" part must be selected.
UPA1556AH(7)-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(7)-AZ FAQ
1.How can I place an order for UPA1556AH(7)-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for UPA1556AH(7)-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(7)-AZ reliable?
The price and inventory of UPA1556AH(7)-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(7)-AZ is usually 5 days.
3.What payment methods are accepted for UPA1556AH(7)-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPA1556AH(7)-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPA1556AH(7)-AZ?
UPA1556AH(7)-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPA1556AH(7)-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(7)-AZ?
For technical support, including UPA1556AH(7)-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPA1556AH(7)-AZ requirements.
6.How does Aetrix verify that UPA1556AH(7)-AZ is sourced from the original manufacturer or authorized distributors?
All UPA1556AH(7)-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(7)-AZ meets industry standards.
7.What is the process for return or replacement of UPA1556AH(7)-AZ?
All UPA1556AH(7)-AZ units undergo pre-shipment inspection (PSI). If there is an issue with UPA1556AH(7)-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(7)-AZ part is unused and in its original packaging.
Return procedure for UPA1556AH(7)-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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