TPS5103IDBR dual output synchronous buck controller IC SSOP16

Description

TPS5103IDBR dual output synchronous buck controller IC SSOP16

The TPS5103IDBR is a dual-output synchronous buck controller from Texas Instruments (TI). Below are the key specifications for this IC:

General Specifications:

• Part Number: TPS5103IDBR

• Package: SSOP-16 (DBR)

• Type: Dual Synchronous Buck Controller

• Input Voltage Range (VIN): 4.5V to 28V

• Output Voltage Range: Adjustable (depends on external components)

• Switching Frequency: 300 kHz (fixed)

• Number of Outputs: 2 (independent buck controllers)

• Gate Drive Output Current: 1.5A (sink/source)

• Efficiency: Up to 95% (depending on design)

• Operating Temperature Range: -40°C to +85°C

Key Features:

• Dual synchronous PWM controllers with integrated gate drivers

• Adjustable soft-start for both channels

• Overcurrent protection (cycle-by-cycle current limiting)

• Undervoltage lockout (UVLO)

• Power-good (PG) signal for each output

• Adjustable dead-time control for improved efficiency

• Supports pre-biased outputs

Applications:

• Point-of-load (POL) regulators

• Networking and telecom equipment

• Industrial power supplies

• Embedded computing systems

• Distributed power systems

Pin Configuration (SSOP-16):

1. BOOT1 – Bootstrap capacitor connection for Channel 1

2. UGATE1 – High-side MOSFET gate drive for Channel 1

3. LGATE1 – Low-side MOSFET gate drive for Channel 1

4. GND – Ground

5. FB1 – Feedback input for Channel 1

6. COMP1 – Compensation pin for Channel 1

7. SS1 – Soft-start control for Channel 1

8. PG1 – Power-good indicator for Channel 1

9. VDD – Supply voltage for control circuitry

10. PG2 – Power-good indicator for Channel 2

11. SS2 – Soft-start control for Channel 2

12. COMP2 – Compensation pin for Channel 2

13. FB2 – Feedback input for Channel 2

14. LGATE2 – Low-side MOSFET gate drive for Channel 2

15. UGATE2 – High-side MOSFET gate drive for Channel 2

16. BOOT2 – Bootstrap capacitor connection for Channel 2

Typical Application Circuit:

Each channel requires:

• External N-channel MOSFETs (high-side & low-side)

• Inductor, output capacitors, feedback resistors

• Bootstrap capacitor for each channel

For detailed design guidelines, refer to the Texas Instruments TPS5103 Datasheet.