Part Number: TPS62147 Dear TI support team,
I measured frequency in case of my condition below.
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MODE, FSEL and EN pin: pulled high(=5V=VIN) VIN = 5.0V, VOUT = 1.2V, IOUT = 20mA
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I got a waveform below. 1.8MHz appears in the waveform,…
Part Number: LP87564-Q1 Hi team,
My customer cannot use 2MHz switching due to EMI test limit. This device can select the switching frequency from 2, 3 or 4MHz by OTP, right?
So I'd like to suggest them to select 3MHz switching. Can this device output…
Hi Clemens,
1. Can you recommend an operational amplifier? The input is high resistance when power is off, and the performance parameters are similar to those of OPA810. Because I want to reduce the series resistance of overvoltage protection. I'm worried…
Hi Robert,
Are you able to scopeshot the L5 inductor current? Place the current loop between L5 and the output capacitance.
If you cannot probe inductor current then the SW node voltage will be OK.
I think the device is hitting current limit, and it is…
Hi Guillaume,
1. I don't have any data for 2MHz exactly, but Figures 8-7 and 8-8 and Figures 7-6 and 7-7 show efficiency vs load current for Fsw=2.2MHz and VOUT=5V for multiple configurations of VIN, BIAS, and Auto/FPWM mode. Is this sufficient?
2. Because…
Hi Chris,
Thanks for your reply.
Actually, we have used TPS54618CQRTERQ1 @ around 2MHz in our products (as shown in the table below) , so we would like to know any potential risks for telling our customers.
Can you explain any potential risks about TPS54618CQRTERQ1…
Hi Ruby,
Could you measure following condition? efficiency of BUCK2 and 3 should be same, correct?
#1.BUCK1 VIN=5V, Fsw=2MHz, Vout=3.3V inductor 2.2uH Iload min 837mA typ 1.15A max 1.56A #2.BUCK1 Vin=5V, Fsw=2MHz, Vout=2.2V inductor 2.2uH Iload min…
Part Number: OPA656 Other Parts Discussed in Thread: OPA356 , , OPA357 Hi,
I am trying to build Peak Detector for 1V 2MHz signal using OPA656. I want to use +-5V supply instead of +-2.5V. Same circuit works with OPA356 but not with OPA656.
Why does OPA656…
Part Number: TPS54388C-Q1 Hi Expert,
Our customer uses TPS54388C-Q1. They are testing loop stability. Our customer has design requirement,fcross110kHz,gain margin >12 dB, phase margin >45Deg, for both 2.5A and 0.5A output. The input voltage is 5V…
Part Number: TPSM5D1806 Other Parts Discussed in Thread: TPS541620 Hi team,
I want to output 1.2V and 5V from 12Vin with TPSM5D1806. The current is 4A each. The data sheet states that 2MHz is required to obtain 5V, but it must be 1.5MHz or less to obtain…