S6BP501A Datasheet, PDF(1/23 Page) Cypress Semiconductor – Wide input voltage range : 2.5V to 42V (DD3V)

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S6BP501A Datasheet, PDF (1/23 Pages) Cypress Semiconductor – Wide input voltage range : 2.5V to 42V (DD3V)

PRELIMINARY

S6BP501A, S6BP502A

3ch DC/DC Converter IC

for Automotive Cluster

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 ÂµA (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

ï®Wide input voltage range : 2.5V to 42V (DD3V)

ï®Adjustable output voltage with pairs of resistors

ï¯ DD1V

: 1.0V to 1.3V

ï¯ DD3V

: 3.2V to 3.4V

ï¯ DD5V

: 5.0V to 5.2V

ï®Switching frequency range (synchronizable to external clock

by SYNC function)

ï¯ DD1V, DD5V

Internal clock operation : 2.1 MHz (Typ)

External clock operation : 1.8 MHz to 2.4 MHz

ï¯ DD3V (one-fifth-divided clock)

Internal clock operation : 420 kHz (Typ)

External clock operation : 360 kHz to 480 kHz

ï®Super-high efficiency by PFM operation (DD3V, DD5V :

When fixing SYNC pin to a low level)

ï®Automatic PWM/PFM switching and fixed PWM operations

are settable by SYNC pin (DD3V, DD5V)

ï®Operable on up to 100% duty (DD3V)

ï®Built-in phase compensators

ï®Built-in SSCG

(spread spectrum clock generator)

ï®Synchronous rectification current mode architecture

ï®Shutdown current

: 1 ÂµA (Typ)

ï®Quiescent current

: 15 ÂµA (Typ)

ï®Load-independent soft-start

ï®Power good monitors for each output

ï¯ OVD (over voltage detection)

ï¯ UVD (under voltage detection)

ï®Enhanced protection functions

ï¯ UVLO (under voltage lockout)

ï¯ OVP (over voltage protection)

ï¯ OCP (over current protection)

ï¯ TSD (thermal shutdown)

ï¯ TWI (thermal warning indicator)

ï®Wettable QFN-32 package : 5 mm Ã 5 mm

ï®AEC-Q100 compliant (Grade-2)

Applications

ï®Instrument cluster

ï®Automotive applications

ï®Industrial applications

Block Diagram

Battery 2.5-42V

Enable

S6BP501A,

S6BP502A

LDO,

Enable

Power Sources

Buck

Controller

0.42 MHz

Load

Switch

3.3 V *1

External

Clock for

Synchronization

Enable

SSCG

OSC,

External

SYNC,

SSCG

Boost

Converter

2.1 MHz

Buck

Converter

2.1 MHz

5.0 V *1

1.2 V *1

Thermal

Protection

Warning

and

GND

Power Good

Thermal

Warning

Power

Good

*1: Output voltages are finely adjustable with external resistive dividers

Cypress Semiconductor Corporation

Document Number: 002-03396 Rev. *D

â¢ 198 Champion Court â¢ San Jose, CA 95134-1709 â¢ 408-943-2600

Revised September 9, 2016

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