S6BP501A, S6BP502A

3ch DC/DC Converter IC

for Automotive Cluster

Cypress Semiconductor Corporation

•

198 Champion Court

•

San Jose

•

408-943-2600

Document Number: 002-03396 Rev. *D

Revised September 9, 2016

PRELIMINARY

S6BP501A/S6BP502A is a three channel output power management IC. This IC includes one high voltage buck DC/DC controller

(DD3V), one buck DC/DC converter with built-in FETs (DD1V) and one boost DC/DC converter with built-in FETs (DD5V). Current

mode architecture is used for fast load transient response. At no load, the input supply current is reduced to 15 µA (Typ). It is possible

to provide stable output voltage under an automotive cold cranking condition until the input voltage falls to 2.5V. This IC is suitable for

power supply solutions of automotive and Industrial applications. Each output voltage can be adjusted by external resistors. Both

DD1V and DD5V support the switching frequencies up to 2.4 MHz to allow use of small size inductors, which can reduce a part

mounting area. To decrease EMI, this IC equips a SYNC function that synchronizes to an external clock signal and a spread spectrum

clock generator (SSCG). When not inputting an external clock, it operates by an internal clock. The SSCG is valid both internal clock

and external clock. Moreover, this IC has power good (PG) monitors for each output and a thermal-warning indicator.

Features

: 2.5V to 42V (DD3V)



DD1V

: 1.0V to 1.3V



DD3V

: 3.2V to 3.4V



DD5V

: 5.0V to 5.2V

by SYNC function)



DD1V, DD5V

Internal clock operation

: 2.1 MHz (Typ)

External clock operation

: 1.8 MHz to 2.4 MHz



DD3V (one-fifth-divided clock)

Internal clock operation

: 420 kHz (Typ)

External clock operation

: 360 kHz to 480 kHz

When fixing SYNC pin to a low level)

are settable by SYNC pin (DD3V, DD5V)

(spread spectrum clock generator)

: 1 µA (Typ)

: 15 µA (Typ)



OVD (over voltage detection)



UVD (under voltage detection)



UVLO (under voltage lockout)



OVP (over voltage protection)



OCP (over current protection)



TSD (thermal shutdown)



TWI (thermal warning indicator)

: 5 mm × 5 mm

Applications

Block Diagram

Battery

2.5-42V

GND

S6BP502A

Boost

Converter

2.1 MHz

Power

Good

Buck

Converter

2.1 MHz

S6BP501A,

Enable

Power Sources

Protection

OSC,

External

SYNC,

SSCG

LDO,

Enable

3.3 V

5.0 V

1.2 V

SSCG

Enable

: Output voltages are finely adjustable with external resistive dividers

1

*

1

*

1

*

1

*

External

Clock for

Synchronization

Thermal

Warning

and

Power Good

Thermal

Warning

Buck

Controller

0.42 MHz

Load

Switch