TPSM82816 vs TPSM82866A vs TPSM82866C: 6A Power Module
TPSM82816
Mfr. Part #: TPSM82816
Manufacturer: Texas Instruments
Package/Case: QFN-FCMOD (VCA) or USIP (SIE)
Description: 2.7V to 6V input, 6A synchronous buck power module with integrated inductor, adjustable frequency, synchronization and soft-start/tracking.
TPSM82866A
Mfr. Part #: TPSM82866A
Manufacturer: Texas Instruments
Package/Case: QFN-FCMOD (RCF) or B0QFN (RDJ/RDM)
Description: 2.4V to 5.5V input, 6A DCS-Control buck power module with integrated inductor, 4µA typical quiescent current and analog output-voltage selection.
TPSM82866C
Mfr. Part #: TPSM82866C
Manufacturer: Texas Instruments
Package/Case: QFN-FCMOD (RCF), 2.3 × 3 × 1.95mm
Description: 2.4V to 5.5V input, 6A DCS-Control buck power module with integrated inductor, I2C-programmable output voltage and device-status monitoring.
The TPSM82816, TPSM82866A and TPSM82866C all integrate a 6A synchronous buck converter and an inductor in a compact surface-mount package. However, they target different power-rail requirements.
TPSM82816 offers the widest input range and the most switching-frequency flexibility. TPSM82866A focuses on fast transient response, low standby power and a small solution size. TPSM82866C uses the same low-IQ DCS-Control platform as TPSM82866A but adds an I2C interface for programmable output voltage and device-status readback.
TPSM82816 vs TPSM82866A vs TPSM82866C
| Parameter | TPSM82816 | TPSM82866A | TPSM82866C |
|---|---|---|---|
| Maximum output current | 6A | 6A | 6A |
| Input voltage | 2.7V to 6V | 2.4V to 5.5V | 2.4V to 5.5V |
| Output voltage | 0.6V to 5.5V | 0.6V to VIN; adjustable or fixed options | 0.2V to 3.35V, depending on device option |
| Control architecture | Peak current mode | DCS-Control | DCS-Control |
| Switching frequency | Adjustable and synchronizable, 1.8MHz to 4MHz | 2.4MHz | Approximately 2.4MHz |
| Typical quiescent current | 18µA | 4µA | 4µA |
| Digital interface | No | No | I2C up to 3.4Mbps |
| Special functions | Spread spectrum, adjustable soft-start, tracking | 13 fixed-voltage options, power-save or forced PWM | Dynamic voltage scaling, programmable mode and status readback |
| Package options | 2.5 × 3mm VCA MagPack; 3 × 4mm SIE MicroSiP | 2.3 × 3mm RCF MagPack; 3.5 × 4mm RDJ/RDM | 2.3 × 3 × 1.95mm RCF MagPack |
| Best fit | Clock-sensitive or sequenced rails | Compact analog-controlled rails | Digitally managed low-voltage rails |
Typical Applications
FPGA, ASIC and processor core rails
Optical and telecom modules
Test and measurement equipment
Medical electronics
Battery-powered industrial systems
Compact point-of-load regulators
FAQ
Are TPSM82816, TPSM82866A and TPSM82866C drop-in replacements?
No. Package options, pinouts, control architecture and feature pins differ. Always verify the complete orderable part number, PCB footprint and external-component requirements before replacing one device with another.
Which device supports a 6V input?
TPSM82816 supports input voltages up to 6V. TPSM82866A and TPSM82866C are limited to 5.5V maximum input.
Which model has the lowest quiescent current?
TPSM82866A and TPSM82866C specify 4µA typical operating quiescent current. TPSM82816 specifies 18µA typical.
Which device supports I2C control?
TPSM82866C provides an I2C-compatible interface for voltage programming, mode control, output discharge and status readback. TPSM82816 and TPSM82866A are hardware-controlled devices.
Can TPSM82866C generate a 5V output?
No. Its programmable ranges extend to a maximum of 3.35V, depending on the selected device option. TPSM82816 or TPSM82866A is more suitable when a higher output voltage is required.
