ISL95831 Datasheet PDF – Multiphase Controller

Part Number: ISL95831

Function: Multiphase Controller, 3+1 Voltage Regulator for IMVP-7/VR12 CPUs

Package: 48 TQFN Pin Type

Manufacturer: Intersil

Images:
ISL95831 datasheet

Description

This is 3+1 Voltage Regulator.

Compliant with IMVP-7/VR12, the ISL95831 provides a complete solution for microprocessor and graphic processor core power supply. It provides two Voltage Regulators (VRs) with three integrated gate drivers. The first VR can be configured as 3-, 2- or 1-phase VR while the second output is 1-phase VR, providing maximum flexibility. The two VRs share the serial control bus to communicate with the CPU and achieve lower cost and smaller board area compared with the two-chip approach.

Features

1. Serial Data Bus
2. Dual Outputs :
(1) Configurable 3-, 2- or 1-phase for the 1st Output using 2 integrated Gate Drivers
(2) 1-phase for the 2nd Output using an Integrated Gate Driver

3. 0.5% System Accuracy Over-Temperature

4. Supports Multiple Current Sensing Methods
(1) Lossless Inductor DCR Current Sensing
(2) Precision Resistor Current Sensing

5. Differential Remote Voltage Sensing
6. Programmable VBOOT Voltage at Start-up

Pinout:

ISL95831 pinout

Applications:

1. IMVP-7/VR12 Compliant Computers

Other data sheets are available within the file: ISL95831HRTZ, 95831HRTZ, ISL95831IRTZ, 95831IRTZ

ISL95831 Datasheet PDF


 

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1207A Datasheet PDF – PWM Current Mode Controller

Part Number: 1207A

Function: PWM Current-Mode Controller for Free Running Quasi-Resonant Operation

Package: SOIC-8 Pin Type

Manufacturer: ON Semiconductor

Images:

1207A datasheet

Description

The NCP1207A, 1207A combines a true current mode modulator and a demagnetization detector to ensure full borderline/critical Conduction Mode in any load/line conditions and minimum drain voltage switching (Quasi-Resonant operation). Due to its inherent skip cycle capability, the controller enters burst mode as soon as the power demand falls below a predetermined level. As this happens at low peak current, no audible noise can be heard. For the NCP1207A, an internal 8.0 micro s timer prevents the free-run frequency to exceed 125 kHz (therefore below the 150 kHz CISPR-22 EMI starting limit), while the skip adjustment capability lets the user select the frequency at which the burst foldback takes place. For the NCP1207B, the internal timer duration is reduced to 4.5 micro s to allow operation at higher frequencies (up to 200 kHz).

Features

1. Free-Running Borderline/Critical Mode Quasi-Resonant Operation

2. Current-Mode with Adjustable Skip-Cycle capability

3. Auto-Recovery Over Current Protection

4. 500 mA Peak Current Source/Sink Capability

5. Internal 1.0 ms SoftStart

6. Internal 8.0 µs Minimum TOFF

7. Latched Over Voltage Protection

8. Adjustable skip level

Pinout:

1207A pinout

Applications:

1. Auxiliary power supplies

2. AC/DC adapters for notebook

3. Offline battery chargers

4. Consumer electronics (DVD player, set-top box, TV)

Other data sheets are available within the file: NCP1207A, NCP1207B, 1207B

 

1207A Datasheet PDF


 

1207A pdf

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