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Analog Devices Inc. ADP1972ARUZ-R7
- Part No.:
- ADP1972ARUZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADP1972ARUZ-R7.pdf
- Description:
- IC REG CTRLR BUCK 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:371
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Product details
Overview
ADP1972ARUZ-R7 from Analog Devices is a constant-frequency, voltage-mode PWM controller for asynchronous buck or boost DC-DC conversion in battery test systems. It supports 6 V to 60 V input, delivers 5 V LDO output, enables mode-selectable operation (buck for charge, boost for energy recycle), and integrates programmable soft start, 50–300 kHz frequency control, and peak hiccup current limiting - deployed with external high-voltage FETs and the AD8450 monitor in hybrid vehicle battery validation rigs.
For engineers reviewing the ADP1972ARUZ-R7 datasheet, ADP1972ARUZ-R7 pinout, ADP1972ARUZ-R7 application, or ADP1972ARUZ-R7 equivalent, key selection criteria include VIN range compatibility, MODE-selectable topology, COMP-driven voltage-mode control, synchronization capability via SYNC/SCFG, and fault-handling behavior with AD8450 interfacing.
Technical Context
The ADP1972ARUZ-R7 implements voltage-mode PWM control using an internal 4.0 Vp-p sawtooth ramp compared against an externally sourced error signal on the COMP pin. Its dual-mode operation is latched at power-up based on MODE pin voltage (≤1.05 V for boost, ≥1.20 V for buck), preventing runtime mode switching without full shutdown.
Frequency is set either internally via resistor on FREQ (50–300 kHz) or externally via SYNC input, with SCFG configuring SYNC as input/output and enabling programmable phase shift. Protection includes UVLO (5.71 V rising, 5.34 V falling), thermal shutdown (150 °C rising), and hiccup current limit triggered after >500 consecutive overcurrent cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6 V to 60 V - supports wide-input battery test bus voltages without auxiliary supplies. |
| VREG Output | 4.9 V to 5.1 V @ 5 mA - powers external logic (MODE, FAULT, SYNC) and serves as bias reference. |
| PWM Frequency Range | 50 kHz to 300 kHz - adjustable via FREQ pin resistor; enables EMI optimization and inductor size trade-offs. |
| Max Internal Duty Cycle | 97.37% - allows near-100% conduction for low-dropout boost or high-efficiency buck operation. |
| COMP Input Range | 0.5 V to 4.5 V linear control range - maps directly to duty cycle; <0.5 V disables outputs, >4.5 V clamps at max duty. |
| UVLO Threshold | 5.71 V (rising), 5.34 V (falling) - provides 370 mV hysteresis to prevent oscillation during brownout. |
| Thermal Shutdown | 150 °C (rising), 135 °C (falling) - protects IC and external FETs under sustained overload or poor heatsinking. |
Pinout & Package
ADP1972ARUZ-R7 is housed in a 16-lead TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch) with exposed thermal pad. Pin 14 is power/analog ground (GND); Pin 15 (GNDSENSE) provides Kelvin sense for current-limit resistor return, isolating sense path from power ground noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DL | Low-side gate drive output | Active in boost mode only; drives external low-side MOSFET driver (e.g., IR2110S) with 5 V swing. |
| DH | High-side gate drive output | Active in buck mode only; complements DL - never active simultaneously to prevent shoot-through. |
| MODE | Topology select input | Logic-low (<1.05 V) configures boost/recycle; logic-high (>1.20 V) configures buck/charge - latched at VREG rise. |
| COMP | Error amplifier input | Receives CV/CC error signal from AD8450; 0.5–4.5 V range linearly controls duty cycle vs. internal 4 Vp-p ramp. |
| FAULT | External fault enable/disable | Driven low by AD8450 OCP/OVP event; disables DH/DL until pulled high - enables system-level fault coordination. |
| FREQ | Frequency set input | Resistor-to-ground sets oscillator frequency; 100 kΩ yields ~100 kHz - critical for timing consistency across multi-channel testers. |
| SYNC / SCFG | Synchronization I/O + configuration | SYNC acts as input (external clock sync) or output (master clock); SCFG voltage selects mode and phase offset. |
| DMAX | Maximum duty cycle programming | Resistor-to-ground sets duty cap below 98%; tie to VREG for default max - prevents saturation in high-VIN buck. |
Key Features
| Feature | Design Value |
|---|---|
| Selective buck or boost mode | Single IC supports bidirectional energy flow: buck for battery charging, boost for regenerative discharge into input bus. |
| AD8450-compatible interfaces | FAULT and COMP pins match AD8450's signaling protocol - eliminates level-shifting and simplifies integration in precision battery test stacks. |
| Programmable soft start | Capacitor on SS pin controls startup slew rate; prevents inrush into large battery capacitance and avoids false current-limit trips. |
| Synchronization with phase shift | SYNC output can daisy-chain to other regulators; SCFG-adjusted phase offset reduces input ripple in multi-phase battery test racks. |
| Peak hiccup current limit | Triggers after sustained overcurrent (e.g., shorted cell), disables PWM for 5.2 ms, then auto-restarts - protects FETs without latch-off. |
| Integrated 5 V LDO (VREG) | Supplies internal circuitry and external logic; stable across 6–60 V VIN - removes need for separate bias rail in high-voltage test fixtures. |
Applications
| Battery Charge Validation | Energy Recycle Testing |
|---|---|
Use Scenario: Verifying constant-current (CC) and constant-voltage (CV) regulation accuracy during Li-ion battery charging in automotive EOL test stations. IC Role / Device Role / Timing Role: ADP1972ARUZ-R7 operates in buck mode, driving external high-side FET to regulate charging voltage/current under closed-loop control from AD8450. Use Value: Enables precise, programmable charge profiles with <±0.5% CV accuracy and fast transient response due to voltage-mode control and 50–300 kHz flexibility. |
Use Scenario: Recycling energy from discharged EV traction batteries back to the DC test bus during capacity cycling tests. IC Role / Device Role / Timing Role: ADP1972ARUZ-R7 operates in boost mode, driving external low-side FET to transfer stored battery energy to higher-voltage input bus. Use Value: Achieves >92% energy recovery efficiency with hiccup current limiting protecting against cell reversal during deep discharge phases. |
| Multi-Channel Battery Emulation | PC & Camera Battery Test Rigs |
Use Scenario: Simulating dynamic load profiles (e.g., pulsed discharge) across 4–8 parallel battery channels in production test systems. IC Role / Device Role / Timing Role: ADP1972ARUZ-R7 synchronizes via SYNC output to align switching edges across all channels, minimizing aggregate input ripple. Use Value: Reduces required input bulk capacitance by >40% and eliminates beat-frequency artifacts in shared power supply measurements. |
Use Scenario: Functional testing of consumer-grade smart batteries (e.g., USB-C PD, camera packs) requiring rapid charge/discharge sequencing. IC Role / Device Role / Timing Role: ADP1972ARUZ-R7 toggles between buck (charge) and boost (discharge) modes under host PC control via MODE pin, enabling full-cycle validation. Use Value: Eliminates need for separate charge and discharge controllers - cuts BOM cost and PCB area by 35% in compact benchtop testers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3780 | Fixed 55 V max VIN; no integrated VREG; requires external bias supply; synchronous rectification support. | Targeted at high-efficiency DC-DC converters, not battery test systems with AD8450 interface. | Choose LTC3780 only if synchronous operation and tighter VIN limit are acceptable - lacks AD8450-compatible FAULT/COMP signaling. |
| UCD7232 | Integrated high-side/low-side drivers; 16 V max VIN; no MODE-selectable topology; no VREG or SYNC capability. | Designed for isolated flyback or half-bridge topologies in telecom power, not bidirectional battery testing. | UCD7232 is unsuitable for ADP1972ARUZ-R7's 6–60 V range or buck/boost reconfiguration - use only in low-voltage, fixed-topology designs. |
Compared with LTC3780 and UCD7232, ADP1972ARUZ-R7 uniquely combines wide-input operation, AD8450 interoperability, topology-selectable control, and integrated 5 V bias - making it the only drop-in solution for precision, multi-mode battery test instrumentation.
Availability
ADP1972ARUZ-R7 is available at Aetrix Electronics and suitable for battery test equipment, energy recycling systems, and multi-channel battery emulation platforms requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for ADP1972ARUZ-R7 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets since 1965.
The ADP1972ARUZ-R7 belongs to Analog Devices' battery test and precision power controller product line, engineered specifically for high-accuracy, bidirectional energy management in automated battery validation systems.
FAQ
What is the primary function of the ADP1972ARUZ-R7 in battery test systems?
The ADP1972ARUZ-R7 serves as a mode-selectable PWM controller that drives external high-voltage FETs in either buck configuration (for battery charging) or boost configuration (for energy recycling). It interfaces directly with the AD8450 monitor IC via COMP and FAULT pins, enabling closed-loop CV/CC regulation and coordinated fault handling - making ADP1972ARUZ-R7 essential for precision, programmable battery test instrumentation.
Can the ADP1972ARUZ-R7 operate without the AD8450?
No - the ADP1972ARUZ-R7 relies on the AD8450 for critical functions: the COMP pin requires the AD8450's error amplifier output to generate PWM duty cycle, and the FAULT pin depends on AD8450's overcurrent/overvoltage detection. While basic oscillator and gate drive functions may power up, stable regulation and protection require AD8450 integration - ADP1972ARUZ-R7 is designed exclusively as its companion controller.
How does the MODE pin determine buck versus boost operation?
The MODE pin voltage is sampled and latched on the rising edge of VREG at startup. If MODE ≤ 1.05 V (typical), ADP1972ARUZ-R7 configures for boost mode (DL active, DH forced low). If MODE ≥ 1.20 V (typical), it configures for buck mode (DH active, DL forced low). Mode cannot be changed dynamically - ADP1972ARUZ-R7 must be fully disabled (via EN or FAULT) and restarted to switch topologies.
What is the role of the GNDSENSE pin on the ADP1972ARUZ-R7?
GNDSENSE provides a Kelvin connection point for the current-sense resistor's return path, separating it from noisy power ground (GND). This ensures accurate peak current limit detection by eliminating voltage drop errors caused by high di/dt in the main ground path - critical for repeatable hiccup current limiting in high-power battery discharge testing where ADP1972ARUZ-R7 must respond reliably to short-circuit events.
Does the ADP1972ARUZ-R7 support synchronization with other switching controllers?
Yes - the ADP1972ARUZ-R7 supports both master and slave synchronization. When SCFG ≥ 4.53 V, SYNC becomes an output clock (50–300 kHz, ~50% duty) to synchronize other regulators. When SCFG ≤ 0.5 V, SYNC accepts an external clock as input. Phase shift is adjustable via intermediate SCFG voltages - enabling precise ripple cancellation in multi-channel ADP1972ARUZ-R7 battery test racks.
ADP1972ARUZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 6V ~ 60V
- Frequency - Switching:
- 50kHz ~ 300kHz
- Duty Cycle (Max):
- 97.37%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- Yes
- Serial Interfaces:
- -
- Control Features:
- Current Limit, Enable, Frequency Control, Soft Start
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
ADP1972ARUZ-R7 FAQ
1.How can I place an order for ADP1972ARUZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1972ARUZ-R7 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 ADP1972ARUZ-R7 reliable?
The price and inventory of ADP1972ARUZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1972ARUZ-R7 is usually 5 days.
3.What payment methods are accepted for ADP1972ARUZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1972ARUZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1972ARUZ-R7?
ADP1972ARUZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1972ARUZ-R7 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 ADP1972ARUZ-R7?
For technical support, including ADP1972ARUZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1972ARUZ-R7 requirements.
6.How does Aetrix verify that ADP1972ARUZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADP1972ARUZ-R7 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 ADP1972ARUZ-R7 meets industry standards.
7.What is the process for return or replacement of ADP1972ARUZ-R7?
All ADP1972ARUZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1972ARUZ-R7, 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 ADP1972ARUZ-R7 part is unused and in its original packaging.
Return procedure for ADP1972ARUZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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