PM6652 STMicroelectronics, PM6652 Datasheet - Page 47

• Manufacturer Part Number: PM6652
• Description: IC CTLR STEPDOWN SMPS 32VFQFPN
• Manufacturer: STMicroelectronics

Specifications of PM6652

• Applications: Controller, Intel IMVP-6.5™, VR11
• Voltage - Input: 4.5 V ~ 36 V
• Number Of Outputs: 1
• Voltage - Output: 0.3 V ~ 1.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PM6652
Equation 35
If C60 is used in the current sensing network the IMON function and the average current
limit feature are not available, since the DC sensed current is almost equal to zero (see
Section 8.10.2: Current monitor (IMON) on page 35
This application idea has been verified for IMVP7 VCCIO and PCH core supply, 1.05 V rail.
The 1.05 V rail is required to provide up to 16 A, with 8 A load transient in 150 ns. The
following setup has been tested:
●
●
●
The DC and AC performances have been evaluated.
Figure 50. Load line disabled – VCCIO Supply example
The measured output voltage is almost constant in the full load range, with a maximum drift
lower than 0.2 mV.
The output voltage ripple is close to 17 mV peak-to-peak, from 1 A to 16 A output load.
Output capacitor: 4x330µF/6mΩ + 8x10 µF/X5R
Inductor: 0.5µH/26.9ARMS/0.86mΩ
C15=100 nF; C60=3.3 nF; R31=R32=3.3 kΩ; C30=100 pF; R8=300 kΩ
Doc ID 16867 Rev 3
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GND
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Application ideas
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