Monolithic Power Systems Inc. HR2000GS-P

Overview

HR2000GS-P from Monolithic Power Systems is a fluorescent lamp ballast controller IC integrating active PFC and 600V half-bridge gate drivers in a single SOIC-16 package. It delivers programmable preheat/ignition timing, boundary-conduction-mode (BCM) PFC with Ton control, capacitive-mode and end-of-life (EOL) protection, and operates across wide input voltage ranges for compact and tube fluorescent lamp systems.

For engineers reviewing the HR2000GS-P datasheet, HR2000GS-P pinout, HR2000GS-P application, or HR2000GS-P equivalent, this device serves as a complete analog ballast solution requiring only 16 pins and minimal external components - critical for cost-sensitive, high-reliability lighting designs where lamp life monitoring, fault latching, and frequency sweep control are mandatory.

Technical Context

The HR2000GS-P implements dual-function architecture: a BCM PFC controller using VO pin feedback and ZCD-based zero-current detection, and a self-oscillating half-bridge driver with CT-pin-sawtooth frequency programming and FC-pin voltage-controlled frequency sweep. Preheat and ignition states are timed via CP/EOL capacitor discharge/charge cycles, while EOL detection relies on CP/EOL voltage window comparison against Veol(low)=1.9–2.1 V and Veol(high)=2.9–3.1 V.

Protection logic is tightly integrated: capacitive-mode detection triggers at VCS(cap)=−32 to 0 mV during low-side turn-on; overcurrent limits operate at VCS(clamp)=0.75 V in ignition/burn states; and fault latching occurs when Pre/FT voltage exceeds Vfault(ref)=1.22 V after internal current charging. All protections feed into a single non-oscillating fault state with latch-up behavior.

Key Specifications

Pinout & Package

HR2000GS-P is housed in a 16-pin SOIC package with standard 1.27 mm pitch and 10.3 mm × 7.5 mm body dimensions. Thermal resistance θJA = 80 °C/W (4-layer PCB), enabling operation up to +125 °C junction temperature.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fluorescent lamp ballast controller applications.

Compared with IRS2166DSPBF and UCC3305D, HR2000GS-P uniquely combines BCM PFC, programmable timing, and hardware-based EOL detection in one SOIC-16 package - reducing component count by ≥30% and eliminating calibration for lamp aging in production.

Availability

HR2000GS-P is available at Aetrix Electronics and suitable for compact fluorescent lamp ballasts, linear tube lighting systems, universal-input electronic ballasts, and lamp end-of-life protection circuits requiring stable component supply and long-term manufacturability.

Supply support for HR2000GS-P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with emphasis on energy-efficient power conversion and motor control solutions.

The HR2000GS-P belongs to MPS's fluorescent lamp ballast controller product line, designed specifically for cost-effective, high-reliability AC-DC lighting systems requiring integrated PFC, resonant half-bridge drive, and intelligent lamp protection.

FAQ

What is the minimum recommended value for the CT capacitor?

The CT capacitor sets the base oscillation frequency. Based on typical application data (CCT=100 pF), the minimum usable value is 47 pF - yielding a maximum preheat frequency of ~115 kHz. Lower values risk instability due to insufficient charge/discharge margin and increased sensitivity to parasitic capacitance.

How does the HR2000GS-P handle lamp short-circuit faults?

During lamp short, CS pin voltage exceeds VCS(clamp)=0.75 V during low-side conduction, triggering asymmetric half-bridge operation: low-side MOSFET turn-off is accelerated while high-side remains unaffected. This limits power delivery and prevents thermal runaway until Pre/FT voltage reaches 1.22 V and latches the IC.

Can the PFC section operate independently of the half-bridge?

No - the PFC and half-bridge sections share internal timing and protection logic. The PFC GATE output remains inactive unless the half-bridge enters preheat or burn state. Both subsystems are synchronized to the same CT oscillator and fault detection paths.

What is the purpose of the Pre/FT pin's dual-mode operation?

Pre/FT serves two distinct roles: during preheat, it outputs a high-level voltage to drive an external MOSFET for filament heating; after preheat, it transitions to a fault integrator - charged by Ifault(ch)=3.2 µA during EOL or capacitive-mode events until reaching Vfault(ref)=1.22 V, causing latch-up.

Is the HR2000GS-P RoHS compliant and lead-free?

Yes - all HR2000GS-P units are lead-free and fully compliant with the EU RoHS Directive 2011/65/EU. MPS confirms green status on its official quality assurance portal, with material declarations available upon request for full supply chain traceability.

How is the PFC output voltage regulated?

PFC output voltage is regulated via the VO pin: a resistor divider from the PFC bus to VO sets feedback voltage; internal error amplifier compares VO to 2.500 V reference and adjusts Ton to maintain regulation. Compensation network (R-C-C) connects VO to GND to stabilize loop response.

What thermal derating applies above 25°C ambient?

With θJA = 80 °C/W, maximum allowable power dissipation decreases linearly: at 70°C ambient, max power = (150°C − 70°C) / 80 = 1.0 W. Internal thermal shutdown activates at TJ = 150°C, but continuous operation above 125°C junction temperature is not recommended per datasheet limits.