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Texas Instruments TPIC9201PWP
- Part No.:
- TPIC9201PWP
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPIC9201PWP.pdf
- Description:
- IC PWR DRVR N-CHAN 1:8 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,912
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Product details
Overview
TPIC9201PWP from Texas Instruments is an integrated 8-channel low-side driver IC with internal clamp diodes, 5-V regulated output, zero-voltage synchronization (ZVS), and serial SPI interface. It delivers 150 mA per channel across seven outputs and one dedicated enable-controlled output, operating from 7 V to 18 V unregulated input, and targets appliance motor/relay control in harsh thermal environments.
For engineers reviewing the TPIC9201PWP datasheet, TPIC9201PWP pinout, TPIC9201PWP application, or TPIC9201PWP equivalent, this device serves as a system-level power interface solution for AC-line-synchronized load switching, microcontroller-peripheral isolation, and thermally constrained white-goods designs requiring self-protected drive capability and reset supervision.
Technical Context
The TPIC9201PWP integrates a 5-V ±5% linear regulator (200-mA capable), open-drain RST with programmable delay (6 ms typ), and ZVS circuitry that converts AC zero-crossing into a low-frequency timing reference. Its serial interface uses 8-bit SPI with NCS/SCLK/MOSI to update a single output control register.
All eight low-side drivers feature internal snubber circuits for inductive load energy recirculation, thermal shutdown at 150°C, and current limiting up to 350 mA per output. OUT1 supports dual control-via serial register or dedicated EN1 pin-with truth-table-defined priority logic between the two inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | Eight low-side MOSFET drivers: seven serial-controlled, one with dedicated EN1 pin |
| Output Current Rating | 150 mA continuous per channel; 350 mA short-circuit limit (≤1 ms duration) |
| Input Voltage Range | 7 V to 18 V unregulated VIN; supports 24-V absolute max transient |
| Regulated Output | 5 V ±5% at 5–200 mA load; supplies microcontroller and logic interface |
| Serial Interface | SPI-compatible: 4-MHz max clock, 8-bit register, NCS/SCLK/MOSI protocol |
| Thermal Protection | Thermal shutdown at 150°C with 20°C hysteresis; PWP package θJA = 33°C/W |
| Zero-Voltage Sync | ZVS output provides AC-line-cycle timing reference; SYN input accepts 0–18 V ac-derived signal |
Pinout & Package
TPIC9201PWP uses a 20-pin HTSSOP (PowerPAD™) package with exposed thermal pad. Pin 10 and Pin 11 are internally fused ground terminals. The PowerPAD must be soldered to a PCB copper pour with thermal vias for effective heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ZVS | Zero-voltage sync output | Low-frequency clock synchronized to AC line zero-crossing; enables in-rush current reduction |
| OUT1–OUT8 | Low-side driver outputs | Eight N-channel switches with internal clamp; OUT1 supports dual serial/EN1 control |
| GND (Pins 10, 11) | Ground return | Dual internal-fused ground pins improve current handling and thermal path integrity |
| EN1 | Enable/disable for OUT1 | Hardware override: high = OUT1 forced ON; low/open = controlled by serial register |
| RDELAY | Reset delay current source | 28 µA constant current charges external capacitor to set 6-ms power-up reset delay |
| RST | Open-drain reset signal | Active-low; asserts after regulator stabilizes and RDELAY timer expires; resets output register on assertion |
| MOSI/NCS/SCLK | SPI interface inputs | Serial data, chip select, and clock; 5-V/3.3-V I/O tolerant; support 4-MHz operation |
| 5VOUT | Regulated 5-V supply | Powers external MCU and logic; 200-mA short-circuit current limit; 4.75–5.25 V regulation |
| VIN | Unregulated input | 7–18 V primary supply; powers regulator and drivers; 24-V absolute max rating |
| SYN | AC zero-detect input | Accepts transformer-coupled AC waveform; internal threshold 0.4–1.1 V; 2-mA activation current |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 5-V regulator | Eliminates need for external LDO; powers MCU and logic while maintaining ±5% accuracy over temperature and load |
| Zero-voltage synchronization | Enables microcontroller to time load activation at AC voltage peaks, reducing in-rush current in motors and heaters |
| Programmable reset timing | RDELAY pin allows precise 6-ms (typ) power-on delay before RST goes high, ensuring stable regulator operation prior to SPI communication |
| Internal snubber clamping | Each output includes integrated clamp circuit to absorb inductive kickback without external diodes in most applications |
| Dual-mode OUT1 control | EN1 pin provides hardware-level override of serial control for safety-critical or fast-response load activation |
Applications
| Washing Machine Control | Air Conditioning Fan Driver |
|---|---|
|
Use Scenario: Controlling solenoid valves, drum motor direction relays, and pump drivers in residential washing machines with 120/240 VAC mains. IC Role / Device Role / Timing Role: Low-side driver IC providing isolated, current-limited switching with ZVS-based peak-voltage load activation to minimize surge currents. Use Value: Reduces in-rush stress on triacs and relays by synchronizing motor start to AC line peaks, extending component life and lowering EMI. |
Use Scenario: Driving multi-speed blower motors and auxiliary relays in split-system air conditioners operating from rectified AC bus. IC Role / Device Role / Timing Role: System interface IC delivering regulated 5 V to MCU while managing eight inductive loads via SPI under thermal supervision. Use Value: Enables compact, single-chip replacement of discrete driver + regulator + reset supervisor, reducing BOM count and PCB area. |
| Refrigerator Compressor Interface | Dishwasher Heating Element Control |
|
Use Scenario: Managing compressor start relays, evaporator fan, defrost heater, and door lock solenoids in variable-temperature refrigeration systems. IC Role / Device Role / Timing Role: Fault-protected driver with thermal shutdown and current limiting, interfacing microcontroller to high-energy AC loads. Use Value: Self-protection features prevent latch-up during compressor stall or heater short, eliminating need for external fusing in many designs. |
Use Scenario: Switching resistive heating elements and water valve solenoids in commercial dishwashers with strict thermal management requirements. IC Role / Device Role / Timing Role: High-reliability low-side switch with internal clamp and 150 mA per channel, supporting PWM-modulated heater control. Use Value: Internal snubbers reduce layout complexity and eliminate flyback diode placement errors; 350 mA short-circuit limit handles transient overloads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-side driver with regulator and ZVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPIC2000PWP | Same 20-pin HTSSOP package; adds integrated 3.3-V regulator and enhanced SPI diagnostics; no ZVS output | Lacks zero-voltage sync functionality; requires external zero-cross detection for AC-timed switching | Select when 3.3-V MCU supply is needed and ZVS is not required; higher integration for digital-only control paths |
| ULN2803ADWR | 8-channel Darlington array; no regulator, no ZVS, no reset, no thermal shutdown; 500-mA per channel | Requires external 5-V supply, discrete reset circuit, and external flyback diodes; no AC synchronization capability | Select only for cost-sensitive, non-safety-critical DC loads where full protection and AC timing are unnecessary |
Compared with TPIC2000PWP, TPIC9201PWP offers AC-line timing capability critical for in-rush mitigation but lacks 3.3-V regulation; compared with ULN2803ADWR, TPIC9201PWP provides full system-level integration-regulator, reset, thermal protection, and ZVS-at the cost of higher BOM simplicity trade-off.
Availability
TPIC9201PWP is available at Aetrix Electronics and suitable for washing machine control, air conditioning fan driver, refrigerator compressor interface, dishwasher heating element control, and other white-goods applications requiring stable component supply, long-life thermal reliability, and AC-synchronized load switching.
Supply support for TPIC9201PWP 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 company specializing in analog, embedded processing, and power management technologies, serving industrial, automotive, and consumer markets with high-reliability components.
The TPIC9201PWP belongs to TI's appliance interface IC product line, designed specifically for thermally demanding, AC-powered home appliances requiring integrated power switching, regulation, and line-synchronized timing functions.
FAQ
What is the maximum unregulated input voltage the TPIC9201PWP can withstand?
The TPIC9201PWP supports a recommended operating range of 7 V to 18 V on VIN, with an absolute maximum rating of 24 V. Exceeding 24 V risks permanent damage. Transient spikes above 18 V must be limited in duration and amplitude per the Absolute Maximum Ratings table; sustained operation above 18 V violates specifications and may compromise regulator stability and output driver performance in the TPIC9201PWP.
How does the ZVS output function in the TPIC9201PWP, and what external components are required?
The ZVS output of the TPIC9201PWP generates a low-frequency square wave synchronized to the AC mains zero-crossing, derived from the SYN input. The SYN pin requires a resistor-limited connection to a transformer secondary; no external active components are needed for basic operation. The ZVS signal enables microcontrollers to activate loads at voltage peaks, reducing in-rush current. This functionality is intrinsic to the TPIC9201PWP and does not require additional ICs or firmware calibration.
Can the TPIC9201PWP drive PWM-controlled loads, and what is the maximum supported frequency?
Yes-the TPIC9201PWP supports PWM operation via rapid updates to its 8-bit output control register. To achieve clean PWM, the register must be updated at least twice per desired output cycle. The datasheet specifies a maximum practical PWM frequency of 5 kHz, limited by serial interface timing and internal register update latency. This capability applies to all eight outputs, including OUT1, though EN1 pin control overrides serial updates when asserted high in the TPIC9201PWP.
What thermal management is required for reliable operation of the TPIC9201PWP in continuous 150-mA per channel use?
The TPIC9201PWP in HTSSOP (PWP) package has a junction-to-ambient thermal resistance (θJA) of 33°C/W. At full 150 mA per channel across eight outputs (1.2 A total load), power dissipation exceeds 1 W-requiring a properly designed PCB thermal pad with ≥4 thermal vias connected to an internal ground plane. Without this, junction temperature will exceed 125°C even at 25°C ambient. The TPIC9201PWP thermal shutdown activates at 150°C, so adherence to TI's PowerPAD layout guidelines is mandatory for sustained operation.
Is the TPIC9201PWP pin-compatible with other devices in the TPIC92xx family, such as TPIC9202PWP?
No-TPIC9201PWP is not pin-compatible with TPIC9202PWP or other variants. While both share the 20-pin HTSSOP package, the pin functions differ significantly: TPIC9202PWP replaces ZVS and SYN with diagnostic outputs and lacks the dedicated EN1 pin. The RST, RDELAY, and 5VOUT assignments also vary. Substitution requires PCB redesign and firmware adaptation; the TPIC9201PWP must be treated as a unique pinout and functional configuration within its family.
TPIC9201PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- Switch Type:
- General Purpose
- Number of Outputs:
- 8
- Ratio - Input:Output:
- 1:8
- Output Configuration:
- Low Side
- Output Type:
- N-Channel
- Interface:
- Serial
- Voltage - Load:
- 7V ~ 18V
- Voltage - Supply (Vcc/Vdd):
- 0V ~ 5.25V
- Current - Output (Max):
- 150mA
- Rds On (Typ):
- -
- Input Type:
- Non-Inverting
- Features:
- -
- Fault Protection:
- Current Limiting (Fixed), Over Temperature
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPIC9201PWP FAQ
1.How can I place an order for TPIC9201PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPIC9201PWP 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 TPIC9201PWP reliable?
The price and inventory of TPIC9201PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPIC9201PWP is usually 5 days.
3.What payment methods are accepted for TPIC9201PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPIC9201PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPIC9201PWP?
TPIC9201PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPIC9201PWP 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 TPIC9201PWP?
For technical support, including TPIC9201PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPIC9201PWP requirements.
6.How does Aetrix verify that TPIC9201PWP is sourced from the original manufacturer or authorized distributors?
All TPIC9201PWP 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 TPIC9201PWP meets industry standards.
7.What is the process for return or replacement of TPIC9201PWP?
All TPIC9201PWP units undergo pre-shipment inspection (PSI). If there is an issue with TPIC9201PWP, 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 TPIC9201PWP part is unused and in its original packaging.
Return procedure for TPIC9201PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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