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AN-H64.pdf
AN-H64 Application Note Compatibility and Functional Differences between the HV9961 and HV9910B LED Drivers Figure 1. Typical application circuit of HV9910B and HV9961. V IN V O 1 L VIN 5 PWMD GATE 4 HV9961 6 VDD or CS 2 HV9910B V LD 7 LD GND RT 8 R 3 RT CS rent I , whereas the intent is to
in „LED-Treiber Dimensionierung“ · Analoge Elektronik und Schaltungstechnik ·
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2__HV9961_.pdf
of input voltages. potentially trip the short-circuit protection comparator. (Note that, unlike HV9910B, the HV9961 does not support the constant-frequency mode of operation.) The typical output characteristic of the HV9961 LED driver is shown in Fig.1. The corresponding HV9910B characteristic OFF Timer
in „LED-Treiber Dimensionierung“ · Analoge Elektronik und Schaltungstechnik ·
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1__hv9961_.pdf
is an average current mode control LED driver IC operating in a constant off- time mode. Unlike HV9910B, this control IC does not produce a peak-to-average error, and therefore greatly improves accuracy, line and load regulation of the LED current without any need for loop compensation or high-side
in „LED-Treiber Dimensionierung“ · Analoge Elektronik und Schaltungstechnik ·