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User's Guide
SNVA631A–February 2012–Revised May 2013
AN-2214 TPS92310 Evaluation Module
1 Introduction
The TPS92310 EVM-8W evaluation module is a constant current output LED driver supporting 5W to 8W
applications. The design focuses on applications that require small form factor and minimal number of
external components. The actual PCB dimension of the module is only 22mm x 55mm x 19mm (L x W x
H). The module can work with AC line input from 90 to 132V
RMS
or 180 to 264V
RMS
and supplying 350mA
current into a single string of LEDs, typically 6-7 LEDs in series. The evaluation board is carefully
designed to comply with major industrial EMC and safety requirements. The user can make use of the
information provided in this document, Dual Hot-Swap Power Controllers with Interdependent Circuit
Breaker and Power-Good Reporting (SLVS275) data sheet and application notes to design its specific end
product easily.
2 Description
The TPS92310 EVM-8W is developed with the TPS92310 controller IC. The TPS92310 is a single-stage
AC/DC controller dedicated for LED Lighting applications. The controller uses a primary-side current
sense configuration to control the LED current at secondly side. The system works in Critical Conduction
Mode (CRM) with flyback topology and it employs a constant on time modulation scheme. Inherently,
systems with this configuration can achieve greater than 0.90 Power Factor (PF) easily. The Power Factor
(PF) and line current harmonic performances of the evaluation board are tested and reported in this
document. The TPS92310 also integrated various protection features: Over-Voltage Protection (OVP),
Thermal Shut Down (TSD) and cycle-by-cycle Over-Current Protection (OCP). With these features in
place, the system is well protected against open and short circuit of the LEDs string. Considering with the
EMI problem, the TPS92310 integrates an internal delay timer to improve it. The delay time can be
programmed through an external resistor, it can ensures the controller switch ON the MOSFET only when
the MOSFET’s drain voltage at its lowest point. The Quasi-resonant switching operation improves the EMI
and system efficiency significantly.
3 Typical Applications
LED Lamps:
• A19 (E26/27, E14)
• PAR30/38
• GU10
Domestic and Office SSL solutions:
• Down Light
• LED Panel Light
• Ceiling Lamp Troffer
• T8 Tube
1
SNVA631A–February 2012–Revised May 2013 AN-2214 TPS92310 Evaluation Module
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