Product overview
Description
The STNRG328S is a digital controller for STC/HSTC open loop resonant converter from STMicroelectronics. It performs a power conversion from an input voltage in a typical range of 40 V to 60 V to an output voltage with a programmable conversion ratio from 2:1 to 10:1 with fixed duty cycle and programmable frequency from 140 kHz to 300 kHz.
It’s able to deliver an output power in the range from 500 W up to 2 KW with very high efficiency in wide load range and with efficiency peak of 98.4% .
A State Machine Event Driven (SMED) implements the control strategy to ensure all the STC/HSTC control functions, in particular the ZCD (Zero Current Detection) feature allows a management of the deadtime and the switching frequency in order to achieve the perfect LC resonance and top efficiency independently from the external component variations.
The STNRG328S firmware is specifically designed to program the SMED and implement the control strategy.
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All features
- Digital controller for STC/HSTC topologies
- Support wide conversion ratio from 2:1 to 10:1 to provide several Vout
- State Machine Event Driven (SMED) to implement key control features:
- Current limit in combination with Hot swap controller
- Operating input voltage window
- Conversion ratio control
- PWM frequency and deadtime management to guarantee ZCD function
- Soft-start control
- Driver management
- Temperature control
- Typical application: Server DC/DC intermediate bus generation from 40 V to 60 V input voltage, 200 W to 2 kW output power range
- Peripherals
- 10-bit ADC
- UART interface
- I2C master fast/slow speed rate
- GPIOs
- Memory
- Flash and EEPROM with read-while-write (RWW) and Error Correction Code (ECC)
- Program memory: 32 Kbytes Flash; data retention: 20 years at 55 °C after 1000 cycles at 55 °C
- Data memory: 1 Kbyte true data EEPROM; data retention: 20 years at 55°C after 1000 cycles at 85 °C
- RAM: 6 Kbytes
- Operating temperature: -40 °C up to 105 °C
- Package: VFQFPN32 5x5 mm
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STMicroelectronics - STNRG328S
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STNRG328S | Active | VFQFPN 32 5x5x1.0 mm | Industrial | Ecopack2 | |
| STNRG328STR | Active | VFQFPN 32 5x5x1.0 mm | Industrial | Ecopack2 | |
STNRG328S
Package:
VFQFPN 32 5x5x1.0 mmMaterial Declaration**:
STNRG328STR
Package:
VFQFPN 32 5x5x1.0 mmMaterial Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||
| STNRG328S | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| STNRG328STR | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
STNRG328S Active
STNRG328STR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors