Talk:Regulators: Difference between revisions

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! Pin # !! Name !! Description
! Pin # !! Name !! Description
|-
|-
| 1 || {{cellcolors|#ffcc22}} VOUT || connected to 4x sinkholes (it has a testpad at the other side)
| 1 || {{cellcolors|#ffcc22}} +1.2v_RSX_VDDR || connected to a lot of pads of the [[RSX]], it has a testpad at the other board side
|-
|-
| 2 || {{cellcolors|#ddd}} N/C || Not connected
| 2 || {{cellcolors|#ddd}} N/C || Not connected

Revision as of 03:07, 20 March 2022

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JSD-001 motherboard

All the components listed are controlled by Syscon and connected to it by a pin/trace either directlly or indirectlly, the traces are hidden in internal layers of the motherboard

By looking at the first syscon model used by the PS3 CXR713120-201GB where we know the names of the pin signals it seems these syscon control lines for voltage regulators could be the syscon pins named SW_x or SW_x_x (switches, used as a generic name for slave components that only has 2 states)

Mitsumi 463A (STBY)

Mitsumi voltage regulator 463A
Seen on a JSD-001 motherboard
Pin # Name Description
1 5V_EVER Input 5v standby rail, from power supply (pin 1 of connector CN101)
2 3.3V_EVER_B Output 3.3v standby rail 2
3 RST/SYSCON_RST Goes under package to the black 100 ohm resistor at its right, and from there to syscon pin26@SW2-303
4 ? Goes under package to squared testpad/sinkhole at its right (not connected ?)
5 VCAP Capacitor to ground
6 ? To squared testpad/sinkhole at its top (not connected ?)
7 GND Ground
8 3.3V_EVER_A Output 3.3v standby rail 1

Mitsumi 348A (HDMI)

Mitsumi voltage regulator 348A
Seen on a JSD-001 motherboard
Pin # Name Description
1 N/C Not connected
2 HDMI_EN Connected to SW2-30x pin 119
Connected to HDMI connector pin 18 (+5V output) through a transistor
3 GND Ground (this pin also dissipates heat to the circuit board ground layer)
4 HDMI_VCC1 Connected to HDMI controller MN8647091 pin 100 (and a lot more pins). It have a testpad at the other board side
5 HDMI_VCC2 Connected to HDMI controller MN8647091 pin 25 (and a lot more pins). It have a testpad at the other board side
6 GND Ground (this pin also dissipates heat to the circuit board ground layer)
7 HDMI_EN Connected to SW2-30x pin 119
Connected to HDMI connector pin 18 (+5V output) through a transistor
8 5V_EVER Connected to Power Supply control connector (CN101) pin 1

Mitsumi 810X (RSX)

Mitsumi voltage regulator 810x
Pin # Name Description
1 +1.2v_RSX_VDDR connected to a lot of pads of the RSX, it has a testpad at the other board side
2 N/C Not connected
3 GND Ground
4 NOISE_CAP Noise decrease pin. 0.01μF capacitor to GND, and to a tiny squared testpad
5 EN ?/Cont/Control Connected to syscon pin75@SW2-303
6 N/C Not connected
7 N/C Not connected
8 VIN connected to 2x sinkholes

D35653 0S25

Next to NOR, on top of the board JSD-001, responsible of the NOR VCC

Pin # Name Description
1 OUT/NOR ? capacitor and 180 ohm resistor to ground... then to 4 sinkholes and at the other side NOR VCC 3.3v (testpoint)
2 GND
3 GND
4 ? Capacitor to ground
5 EN ? Connected to pin50@SW2-303. And pin 3 @ Service Connector
6 GND
7 GND
8 VCC ? To fuse/thermistor TH7601

BD9684 0906

Pin # Name Description
1 ? sealed coil... then to 8 sinkholes... to BD controller, etc...
2 ? dissapears under package
3 VCC ? 0.400mf capacitor to ground, and to fuse/thermistor TH7601
4 EN ? to a sinkhole... at the other side 3.3K resistor to ground, then connected to pins 2 and 3 of a dual transistor (base of TR1, and collector of TR2)
pin 5 of the dual transistor (base of TR2) is connected to a long trace that dies in a sinkhole and emerges under syscon, connected to pin42@SW2-303
the emitter pins of the dual transistor (1 and 4) are connected to a common ground
5 GND
6 GND
7 dissapears under package
8 VCC ? 0.400mf capacitor to ground, and to fuse/thermistor TH7601
9 ? dissapears under package
10 ? sealed coil... then tied to pin 11
11 ? to 6 sinkholes... at the other side to unpopulated service connector... etc...
12 ? Capacitor to ground, to a 4x-sinkhole... then to BD controller
13
14 GND
15 ? to a sinkhole... at the other side to BD controller
16 ? dissapears under package
17 VCC ? 0.400mf capacitor to ground, and to fuse/thermistor TH7601
18 ? towards blu ray laser connector
19 ? tied to pin 1
20 ? to a sinkhole... then to pin 6 of the same dual transistor (collector of TR1)

Rohm BD3525

BD3525 pinout
Pin # Name Description Connections
1 OUT Output voltage To 4 sinkholes... at the other side to electrolitic capacitor 2.5v 330... and to ???
2
3
4
5
6 VOS Output voltage control Shorten with OUT pins
7 FB Reference voltage feedback Diode to ground, and capacitor to ground, and diode to 55.8 ohm resistor to OUT pins
8 NRCS Non Rush Current on Start-up Capacitor to ground
9 GND Ground
10 GND Ground
11 VCC Power supply To fuse/thermistor TH7601
12 EN Enable input 46Kohm resistor to ground, and a trace that dissapears in a sinkhole and emerges near syscon, connected to pin52@SW2-303
13 SCP Short Circuit Protection delay time setting Capacitor to ground
14 VD Input voltage detect Shorten with IN pins
15 IN Input voltage 0.400mf capacitor to ground, to 4 sinkholes connected to BD3527 (near usb) pins 14 up to 20 and BD3527 (near flash) pins 14 up to 20... and to ???
16
17
18
19
20

Rohm BD3527

There are 2 BD3527 on JSD-001 motherboard, one is located near flash and the other near usb connectors


BD3527 (near flash) pinout
Pin # Name Description Connections
1 OUT ? Output voltage ? to 3 smd components to gnd, to electrolitic capacitor 2.5v 330, to 3 sinkholes with a testpoint at the other side
2
3
4
5
6 VOS ? Output voltage control ? Shorten with OUT pins
7 FB ? Reference voltage feedback ? Capacitor and 1600 ohm resistor to OUT pins
8 NRCS ? Non Rush Current on Start-up ? Capacitor? to ground
9 GND Ground
10 GND Ground
11 VCC ? Power supply ? To fuse/thermistor TH7601
12 EN ? Enable input ? dissapears in a sinkhole (resistor 23Kohm to ground in the other side) and emerges near syscon, connected to pin95@SW2-303
13 SCP ? Short Circuit Protection delay time setting ? dissapears in a sinkhole (capacitor 915nf to ground in the other side)
14 VD ? Input voltage detect ? Shorten with IN pins
15 IN ? Input voltage ? to 3 sinkholes missing at the other side, to 4 sinkholes connected to BD3525 pins 14 up to 20... and to ???
16
17
18
19
20
BD3527 (near USB) pinout
Pin # Name Description Connections
1 OUT ? Output voltage ? 88 ohm resistor to ground, to a testpoint, to 4 sinkholes and to the other side to electrolitic capacitor 2.5v 330 (very close to a ram chip)
2
3
4
5
6 VOS ? Output voltage control ? Shorten with OUT pins
7 FB ? Reference voltage feedback ? capacitor and 1600 ohm resistor to OUT pins
8 NRCS ? Non Rush Current on Start-up ? Capacitor? to ground
9 GND Ground
10 GND Ground
11 VCC ? Power supply ? To fuse/thermistor TH7601
12 EN ? Enable input ? 42k ohm resistor to ground, and to a sinkhole that dissapears in the other side and emerges near syscon, connected to pin92@SW2-303
13 SCP ? Short Circuit Protection delay time setting ? 1000nf capacitor to ground
14 VD ? Input voltage detect ? Shorten with IN pins
15 IN ? Input voltage ? capacitor to ground, to 4 sinkholes missing in the other side, connected to BD3525 pins 14 up to 20 ... and to ???
16
17
18
19
20
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