Texas Instruments TPSM8663x Synchronous Buck Power Modules

Texas Instruments TPSM8663x Synchronous Buck Power Modules offer high-efficiency, high-voltage input, and ease-of-use. The modules integrate power MOSFETs, a shielded inductor, and basic passives, reducing the design size.

The TPSM8663x has a 4.5V to 28V wide operating input voltage range, making it ideal for systems powered from 12V, 19V, and 24V power-bus rails. The devices support up to 6A continuous output current, whose output voltage is between 0.6V and 13V. The TPSM8663x uses DCAP3 control mode to deliver a fast transient response, good line, and load regulation, no requirement for external compensation and supports low equivalent series resistance (ESR) output capacitors like MLCC.

The TPSM86638 operates in forced continuous conduction mode (FCCM) during light load, maintaining a lower output ripple during all load
conditions. TPSM86637 operates in Eco-mode to attain high efficiency at light load.

The TPSM8663x provides complete non-latched OV (Undervoltage), UV (Undervoltage), OC (Overcurrent), OT (Overtemperature), and UVLO (Undervoltage lockout) protections, combined with power-good indicator and output discharge function features.

The TPSM8663x is engineered in a 19-pin, 5.0mm × 5.5mm HotRod QFN package, and the specified junction temperature is -40°C to 150°C.

Features

4.5V to 28V input voltage range
0.6V to 13V output voltage range
6A continuous output current capability
Integrated MOSFETs, inductors, and basic passives
0.6V ±1% reference voltage at 25°C
D-CAP3™ control mode for fast transient response
TPSM86638 with FCCM for pseudo-fixed frequency with lower output ripple
TPSM86637 with Eco-mode for high light-load efficiency

Adjustable soft-start time by SS capacitor
Built-in output discharge function
Selectable 800kHz and 1200kHz switching frequency
Power-good indicator to monitor output voltage
Supports up to 98% duty operation
Non-latched protections for UV, OV, OT, and UVLO
-40°C to +150°C operating junction temperature
19-pin 5.0mm × 5.5mm QFN HotRod™ package

Applications

Industrial applications
- Medical applications
- Factory automation and control (IPC, robotics)
- Test and measurements
- Pro audio video
Space constrained POL for 12V,19V, and 24V power-bus applications