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Renesas RAA207700GBM#HC0
- Part No.:
- RAA207700GBM#HC0
- Manufacturer:
- Renesas
- Package:
- 35-WFBGA, CSPBGA
- Datasheet:
-
RAA207700GBM#HC0.pdf
- Description:
- IC REG BUCK ADJ 15A 35CSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,526
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Product details
Overview
RAA207700GBM from Renesas Electronics is a monolithic synchronous buck regulator with integrated high- and low-side power MOSFETs in a 35-pin CSP package (2.67 mm × 3.87 mm). It delivers up to 15 A continuous output current, supports 3 V–16 V input, regulates output from 0.8 V to 5 V, and employs constant-on-time control for fast transient response-optimized for PC and server point-of-load applications.
For engineers reviewing the RAA207700GBM datasheet, RAA207700GBM pinout, RAA207700GBM application, or RAA207700GBM equivalent, key selection considerations include its 15 A rated output, adjustable 2 MHz switching frequency, built-in line switch driver, Power Good function, and light-load efficiency enhancement via diode emulation mode.
Technical Context
The RAA207700GBM implements a voltage-ripple–based constant-on-time (COT) control architecture, where switching cycle initiation depends on output ripple derived from inductor current and capacitor ESR/ESL-not fixed-frequency PWM. Its 1-shot timer sets high-side MOSFET on-time (typ. 210 ns at 12 VIN, 1.2 VOUT), while low-side conduction terminates when FB falls below 0.8 V reference.
It integrates dual functional blocks: a primary synchronous buck controller with overvoltage (1.00 V FB threshold), overcurrent (20 A typ. trip), and thermal shutdown (150°C) protection; and an independent, high-drivability line switch driver (25 mA source/sink) with 300 ns propagation delay-operable even during regulator shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 16 V - Supports wide-input industrial and computing rails including 5 V, 12 V, and 15 V bus systems. |
| Output Current Rating | Up to 15 A continuous - Enables single-chip solution for high-current CPU/GPU core supplies in servers and workstations. |
| Switching Frequency | Adjustable up to 2 MHz - Allows compact magnetics and high-density layout; set via external resistor on SET pin. |
| Quiescent Current | 300 µA (typ.) at no load - Minimizes standby power loss in always-on system domains. |
| Standby Current | 0.1 µA (typ.) - Enables ultra-low-power shutdown state for system-level energy management. |
| FB Reference Voltage | 800 mV ±8 mV - High-accuracy internal reference enables tight output regulation across temperature and load. |
| Power Good Threshold | 720 mV rising, 50 mV hysteresis - Provides reliable sequencing signal for multi-rail systems with precise turn-on margin. |
Pinout & Package
CSP 35-pin package (2.67 mm × 3.87 mm) with solder bump interconnect; thermally enhanced for high-current operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCIN | Controller supply input | +5 V dedicated bias rail for internal logic-must be stable before VIN ramp; UVLO thresholds defined at 4.3 V (start) and 3.8 V (CCM shutdown). |
| VIN | Main power input | 3–16 V high-current input node; connects to input capacitors and PGND via low-inductance path. |
| SW | Switching node | High dv/dt node connecting internal MOSFETs and external inductor; requires careful layout to minimize EMI and ringing. |
| BOOT | Bootstrap supply | Supplies gate drive for high-side MOSFET; internally connected to VCIN via integrated Schottky diode-no external diode needed. |
| PGND / SGND | Power / Signal ground | PGND carries high AC current; SGND is analog reference-both must be joined at single point near IC per layout guidelines. |
| FB | Feedback input | Monitors output via resistive divider; internal 0.8 V comparator enables precise VOUT setting and PGOOD generation. |
| ON/OFF | Enable control | Active-high logic input (2.0 V min enable); slew rate > –5 V/µs required if driven by external controller to avoid noise-induced malfunction. |
| LS_IN / LS_OUT | Line switch driver interface | Independent 25 mA driver pair-controls external MOSFET for discharge, sequencing, or UVLO add-on without affecting main regulator state. |
| SS | Soft-start timing | 2.5 µA current source charges external capacitor; soft-start period = CSS × 0.8 V / 2.5 µA-prevents inrush and supports pre-bias start-up. |
| PGOOD | Open-drain status indicator | Pulled low during fault (OVP/OCP/TSD/UVLO); high-impedance after 30% of soft-start delay when FB ≥ 0.72 V. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-On-Time Control | Enables <1 µs load transient response without loop compensation-ideal for dynamic CPU/GPU loads. |
| Built-in Power MOSFETs | Low RDS(on) integrated FETs eliminate external driver complexity and reduce BOM count for 15 A PoL designs. |
| Enhanced Light Load Mode | Diode-emulation operation reduces quiescent current to 300 µA and improves efficiency below 1 A output. |
| Integrated Line Switch Driver | 25 mA capable driver supports fast VOUT discharge, sequence-free start-up, and discrete MOSFET control-fully independent of regulator state. |
| Bootstrapped High-Side Gate Drive | On-chip Schottky diode eliminates need for external bootstrap diode-reduces component count and layout area. |
Applications
| Server Core Voltage Regulation | Workstation GPU Power Delivery |
|---|---|
Use Scenario: Regulating 1.2 V core supply for dual-socket Xeon processors under dynamic 0–15 A load transients. IC Role / Device Role / Timing Role: Primary synchronous buck controller delivering regulated output with sub-µs transient response via COT architecture. Use Value: Eliminates need for external MOSFET drivers and loop compensation components-reducing board area by >30% vs discrete solutions. | Use Scenario: Providing 0.9–1.8 V adaptive voltage to high-end NVIDIA/AMD GPUs during real-time clock and voltage scaling. IC Role / Device Role / Timing Role: High-current PoL regulator with programmable soft-start and Power Good signaling for coordinated rail sequencing. Use Value: 15 A rating and 2 MHz max frequency enable use of ≤0.5 µH inductors-cutting solution size and improving thermal performance. |
| Industrial Edge AI Accelerator Supply | 5G Baseband Processor Rail |
Use Scenario: Powering FPGA-based inference engines requiring stable 1.0 V at up to 12 A with strict ripple and sequencing requirements. IC Role / Device Role / Timing Role: Main DC-DC converter with integrated OVP/OCP/TSD protection and remote ON/OFF for firmware-controlled power cycling. Use Value: Built-in PGOOD and LS driver allow safe pre-charge, controlled discharge, and fault isolation-meeting IEC 62368-1 safety margins. | Use Scenario: Delivering clean 1.8 V supply to RF SoCs in massive MIMO base stations operating in harsh thermal environments. IC Role / Device Role / Timing Role: Thermally robust buck regulator with 125°C junction rating and 27°C/W θj-a on reference board. Use Value: CSP package and copper pillar interconnect ensure reliable operation at 125°C ambient-enabling fanless enclosure designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2964GQ-Z (Monolithic Power) | 12 A rated, 500 kHz–2 MHz programmable frequency, no integrated line switch driver | Lacks independent LS_IN/LS_OUT functionality-requires external circuitry for discharge or sequencing | Select when line switch features are unnecessary and lower cost is prioritized over integration. |
| TPS546D24RQV (Texas Instruments) | 15 A rated, PMBus-enabled, 400 kHz–2.2 MHz, requires external MOSFETs | Supports digital telemetry and margining but increases BOM count and layout complexity | Select when system-level monitoring, dynamic voltage scaling, or multi-phase synchronization is required. |
Compared with MP2964GQ-Z and TPS546D24RQV, the RAA207700GBM uniquely combines 15 A capability, full integration (MOSFETs + boot diode + LS driver), and COT control-reducing design time and component count while maintaining high efficiency across light-to-heavy loads.
Availability
RAA207700GBM is available at Aetrix Electronics and suitable for server motherboard development, AI accelerator power subsystems, and 5G infrastructure equipment requiring stable component supply, long-term lifecycle support, and high-reliability packaging.
Supply support for RAA207700GBM 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 is a global semiconductor leader specializing in microcontrollers, analog power, and connectivity solutions for automotive, industrial, and datacenter markets.
The RAA207700GBM belongs to Renesas' high-current monolithic buck regulator product line, engineered specifically for demanding point-of-load applications in cloud-scale computing and edge AI hardware where integration, thermal performance, and transient response are critical.
FAQ
What is the maximum continuous output current supported by the RAA207700GBM?
The RAA207700GBM supports up to 15 A continuous output current under recommended operating conditions (TA ≤ 85°C, proper PCB thermal design). This rating is specific to the RAA207700GBM variant-other members of the family (RAA207701GBM and RAA207702GBM) are rated for 10 A and 5 A respectively. The 15 A capability is enabled by low-RDS(on) integrated MOSFETs and the 35-pin CSP thermal package.
Does the RAA207700GBM require an external bootstrap diode?
No, the RAA207700GBM does not require an external bootstrap diode. It integrates a built-in Schottky bootstrapping diode connected between VCIN and BOOT pins, simplifying layout and reducing component count. This internal diode supplies the gate drive voltage for the high-side MOSFET during each switching cycle-eliminating one common failure point and saving board space.
How does the RAA207700GBM handle light-load efficiency?
The RAA207700GBM uses Enhanced Light Load (ELL) mode, which automatically switches to diode-emulation operation under light loads. In this mode, the low-side MOSFET is turned off when inductor current reaches zero, preventing reverse current and reducing switching losses. Combined with a typical quiescent current of 300 µA and standby current of 0.1 µA, this ensures high efficiency down to milliamp-level loads-critical for always-on system domains.
Can the RAA207700GBM's line switch driver operate independently of the main regulator?
Yes, the RAA207700GBM's LS_IN/LS_OUT driver operates fully independently of the main buck regulator's state. It remains functional even when the ON/OFF pin is low and the regulator is disabled. This allows use cases such as controlled VOUT discharge during shutdown, adding UVLO functionality to VIN, or driving auxiliary power rails-without interfering with the primary regulation loop or requiring additional ICs.
What is the recommended start-up sequence for the RAA207700GBM?
The RAA207700GBM requires VIN to be present before VCIN and ON/OFF signals rise. Specifically, the valid sequence is: VIN applied first, then VCIN and ON/OFF pulled high together. If VCIN and ON/OFF rise before VIN, the IC will fail to start. This is due to the absence of VIN UVLO-so external sequencing (e.g., using the LS driver or a supervisor IC) is mandatory unless the "sequence-free" method using LS_IN/LS_OUT is implemented per Renesas Application Note R07DS0891EJ.
RAA207700GBM#HC0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 35-WFBGA, CSPBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 15A
- Frequency - Switching:
- Up to 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 35-CSP (2.67x3.87)
RAA207700GBM#HC0 FAQ
1.How can I place an order for RAA207700GBM#HC0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA207700GBM#HC0 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 RAA207700GBM#HC0 reliable?
The price and inventory of RAA207700GBM#HC0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA207700GBM#HC0 is usually 5 days.
3.What payment methods are accepted for RAA207700GBM#HC0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA207700GBM#HC0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA207700GBM#HC0?
RAA207700GBM#HC0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA207700GBM#HC0 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 RAA207700GBM#HC0?
For technical support, including RAA207700GBM#HC0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA207700GBM#HC0 requirements.
6.How does Aetrix verify that RAA207700GBM#HC0 is sourced from the original manufacturer or authorized distributors?
All RAA207700GBM#HC0 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 RAA207700GBM#HC0 meets industry standards.
7.What is the process for return or replacement of RAA207700GBM#HC0?
All RAA207700GBM#HC0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA207700GBM#HC0, 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 RAA207700GBM#HC0 part is unused and in its original packaging.
Return procedure for RAA207700GBM#HC0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RAA207700GBM#HC0 Tags
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