HV96001 Secondary-Side, Micro-Interfaced, Flicker-Free LED Controller with Enhanced PWM and Analog Dimming FEATURES DESCRIPTION Wide Input Voltage Range: 8V to 60V The HV96001 LED driver targets offline lighting applications requiring wide dimming capability. The Linear (analog) Dimming: device is capable of linear dimming and PWM - With wide range of amplitude control of the dimming, with the PWM dimming capable of flicker-free LED current dimming down to 0.01% level and lower. Pulse-Width Modulation (PWM) (digital) Dimming: The HV96001 is specifically adapted to LED driver - Dims down to 0.01% and lower designs that accommodate a wide range of the LED - With PWM pulse width lower than 150 ns load voltage. The device adjusts the output voltage of - PWM dimming frequency up to 20 kHz the AC to DC conversion stage for maintaining a high Flyback Converter: conversion efficiency over a wide range of the LED load voltage. It also maintains a precise control over the - With automatic output voltage adjustment for LED current amplitude, thereby maintaining the maintaining high system efficiency consistent color temperature. Boost Converter: The adaptability of the device to wide range PWM - With near zero output voltage ripple for a dimming allows for a stable control of the LED current ripple-free LED current waveform for PWM dimming pulse widths down to - 100 Hz/120 Hz ripple rejection 150 ns and lower. - 200 kHz fixed switching frequency The HV96001 driver IC adjusts the flyback converter - SEPIC topology compatible output voltage such that the boost converter (BC) V Regulator: DD operates with a small difference between the boost - 60V input voltage/5V output voltage converter input and output voltage, also referred to as - 10 mA drive for supplying external loads the headroom voltage. Operating the boost converter Fault Recovery with Auto-Retry Delay Set Using with a small headroom voltage, or, more or less Timing Capacitor equivalent, operating with a small voltage step-up ratio allows the boost converter to be physically small and Undervoltage Detection of: operate at a higher efficiency. -V voltage DD The HV96001 includes two feedback regulators, the - Supply voltage (Flyback output voltage) flyback regulator for control of the flyback output Overvoltage Detection of: voltage and the boost regulator for control of the LED - LED load voltage (Boost output voltage) current amplitude. An optocoupler driver circuit drives Overcurrent Detection of: the optocoupler, which in turn provides a control signal - Load switch current for driving the control input of the flyback converter. Stuck-at-Zero Detection of: DIM Signal 5V/div - DIM input signal Short Circuit Protection of Output with Auto-Retry Delay Boost Switch Gate Voltage, BSG pin 5V/div APPLICATIONS Drain MBST 50V/div Offline LED lighting applications featuring wide LED Current 1A/div range for PWM dimming and linear dimming. 10.0 us/div PACKAGES 16L VQFN, 3 mm x 3 mm Regular Operation, 20 kHz DIM 0.3% Duty. 16L SOIC, Narrow Body 2020 Microchip Technology Inc. DS20006291A-page 1HV96001 PACKAGE TYPES 9 4)1 62,& 6 +96 *1 3 9 * /6 /&5 3 /&6 0 , 6 *1 2 705 +96 9 )52 *1 )52 * /6 2 /&6 /&5 0 , 705 723 TYPICAL APPLICATIONS CIRCUIT 912& & )/ 2& 622% 9 9 6 2 / %67 %67 & & 683 287 9 + 9 2 6 5 +9 /( /2 5 +9% 4 +96 0 0 %67 5 5 69 5 5 5 5 5 696 %&6 +96 6 6 3 6 +96 2 * /6 /&6 /&5 8 ,0 *1 )52 2 9 705 5 7 & & 5 5 9 5 70 2 %52 & & 2 %52 2020 Microchip Technology Inc. DS20006291A-page 2 )5 2& )5 23 %5 237 +9 0& 96 %& %6* 696 68 /& 29 29 /2 9 7 19(57(5 <% . (57(5 %5 296 237 %5 3 ( 326( %& 68 %6* 696 696 68 296 %& %6*